Precision Engineered Whey Protein Isolate Chocolate Review

Precision Engineered® 100% Whey Protein Isolate Chocolate Paradise delivers 25 g of high-quality whey protein isolate in every scoop with only 110 calories. Designed for active adults, this streamlined protein formula helps support muscle building, strength, muscle protein synthesis, and exercise recovery when combined with resistance training and adequate nutrition. The page lists the following key points: it provides 25 g of high-quality whey protein isolate per serving; it supports muscle building and strength when combined with resistance training and adequate protein intake; and it supports muscle protein synthesis and exercise recovery. The product is sold as a 2240g powder with 70 servings, priced at $106.99 on this page, and the size selector lists 2240g as the only option. The Supplement Facts panel is based on one 1 scoop (32g) serving. It contains 110 calories, 0.5g total fat with 0g saturated fat and 0g trans fat, 10mg cholesterol, 160mg sodium, 2g total carbohydrate including 1g dietary fiber, less than 1g total sugars and 0g added sugars, and 25g protein. Micronutrients listed are vitamin D 0mcg, calcium 96mg, iron 1mg, potassium 228mg, phosphorus 87mg, and magnesium 35mg. Other ingredients are whey protein isolate, cocoa processed with alkali, natural and artificial flavors, sea salt, inulin, cellulose gum, xanthan gum, soy and/or sunflower lecithin, sucralose, and acesulfame potassium. The product contains milk and soy. The key ingredient is whey protein isolate, described on the page as a high-quality complete protein source that supplies essential amino acids to support muscle protein synthesis, muscle strength, and exercise recovery when combined with appropriate training and nutrition. Directions say to add 1 scoop to 6 to 10 fluid ounces (180-300 mL) of water, milk or another beverage. The page's warnings advise pregnant or nursing people, anyone taking medication, or anyone with a medical condition to consult a doctor before use, to discontinue use and consult a doctor if adverse reactions occur, and to keep out of the direct reach of children. Store in a cool, dry place. The page also notes the product is Made in USA, GMP, Gluten-Free, No Artificial Color, No Preservatives, Vegetarian, Starch-Free, and Wheat-Free, and it mentions a 30-day money-back guarantee, free priority shipping on orders over $59, and 50 years of vitamin expertise by the retailer Vitamin World.

Product Focus: Muscle and StrengthAlso covers:BonesDigestion
Tier ⓘ
Tier 4 · Rank 27
Tier 4 · Emerging. A promising mechanism or animal data, with thin human evidence so far. Rank 27 within Tier 4 for Muscle and Strength; 65 of 86 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
50 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
100% of 4
Biohacker Mentions
10 of 10
Cost per month
$46

Study, Trial or Testing Result Summary

Members Only91 human studies · 28 improved

5 of these 91 human studies gave the ingredient by drip, not by mouth.

91 human studies28 improved46 no effect757,683 people studied

This powder is mainly whey protein isolate, but no whey protein studies were provided here, so this summary covers only the minor nutrients listed on the label. Potassium is the only one with a stated amount, 240 milligrams, and good placebo-controlled trials in older adults found potassium supplements did not improve muscle strength, power or mass [1][2]. A single dose before lifting did not improve bench press performance [3]. The other nutrients are listed without amounts. Vitamin C, often with vitamin E, did not help strength training gains in pooled trials [4], and in some trials it blunted gains [5][6]. Calcium on its own showed no muscle benefit [7][8]. Magnesium did not meaningfully improve strength across pooled trials, though people low in magnesium might benefit [9]. Iron results were mixed, with a larger trial showing no muscle gain [10]. Evidence for vitamin A and phosphorus is thin or unclear [11][12]. Animal and cell studies are never counted.

See all 91 studies →Hide the studies

Review Totals and Summary

Members Only4 reviews · 100% positive
4 reviews · Vitamin World 4
100% positive0% neutral0% negative

Buyers mostly like this chocolate whey isolate, praising its taste, quality and price, though a few find it very sweet. It carries about 4 ratings across the stores. **What buyers say it did for them:** Reviewers describe it as a post-workout drink that works. One says it is "Ideal for post-workout recovery, with minimal digestion issues." Another reports "Performance is felt!" and "the effect is definitely there!" One long-term user has taken it every morning for 16 years. The Vitamin World summary notes that no one there mentions muscle-building results directly, and no one raises concerns about digestion, ingredients or packaging. **What they complain about:** Sweetness is the main complaint. One person found it "definitely a sweet protein" and "kinda a little bit too sweet" whether mixed with coffee, milk or water. Another calls it "Slightly sweet for some preferences." A second complaint is flexibility. One reviewer likes the chocolate but says "your limited to what to mix with it," and contrasts it with vanilla, which can take fruit. The store summary calls this the only critical comment on that page and says it concerns versatility, not quality or taste. **Taste, smell and mixing:** Most comments on taste are good. One reviewer calls it the "Best favor in Dymatize" and another says "Smooth, great-tasting protein that mixes easily with no clumps." The 16-year user also says "Good taste." Nobody comments on smell. Because the product is a powder, pill size does not apply. **Value for money:** Opinions lean positive but are not unanimous. Reviewers say "The price is good as well" and "Not as expensive as other proteins, for that I am thankful." Another says "Good taste and price." One reviewer says it is "on the higher price end" but that quality, flavor and results justify the cost. The Vitamin World summary says none of its reviewers describes the price as high. **Who it suits and who it did not:** It seems to suit regular gym-goers who want a post-workout shake and prefer a sweet chocolate flavor. It also suits repeat buyers, one of whom calls themselves a returning customer and says "I will order more!" One reviewer used it as a first protein powder and liked the quality. It suits less well anyone who dislikes sweet protein, and people who like to blend fruit or other additions into their shake. The one reviewer who raised that limit said vanilla works better for it. **Delivery and accuracy:** One buyer says it arrived "perfectly packed" and "quickly delivered," and another says it was "As advertised !!!" Only powder reviews were considered, and the feedback is mostly short, so detail is limited. Reviewers mention nothing about the 2240g size or the serving count.

Biohacker Summary

Members Only10 of 10 recommend it
10 of 10 biohackers on our panel recommend it

Potassium is the main ingredient, and seven of the ten panelists spoke about it: four recommend it, three use it, one is neutral, and one warns. Those who recommend it say most people do not get enough, that it is needed for the colon to move food along, and that more of it helps during a fast; one prefers potassium-rich foods like bananas and potatoes over supplements for blood pressure. Those who use it take it in electrolyte drinks with sodium and magnesium, often first thing in the morning or around workouts, with one citing 100 milligrams per can, and one panelist only listed food sources like potatoes and fruit. The one warning was about potassium bromate in bread, which is a different substance, and nobody said they stopped taking potassium. Magnesium, a smaller ingredient in this product, is mostly used before bed for sleep, with several panelists taking 400 milligrams of the threonate form.

See all 10 biohackers →Hide the biohackers
  • Dr. Eric Berg · Potassium · recommends
    • 29 Oct 2026 · recommends · Podcast ↗
      States that people need more potassium than any other mineral, yet most people aren’t getting enough.
    • 30 Oct 2026 · Magnesium · neutral · Instagram ↗
      Dr. Eric Berg states that magnesium supports energy, muscle function, and sleep, and that most of it is stored inside cells, making deficiencies harder to detect with a standard blood test.
    • 30 Oct 2026 · Iron · neutral · YouTube ↗
      Identifies iron as the Achilles' heel of cancer, as it is needed for its DNA to replicate.
    • 28 Oct 2026 · recommends · YouTube ↗
      Explains that potassium is essential for peristalsis, the pumping action through the colon, and without it, things can sit there, leading to constipation.
    • 28 Oct 2026 · Magnesium · neutral · YouTube ↗
      Notes that magnesium could also be a factor in preventing muscle cramps.
    • 26 Oct 2026 · Vitamin C · neutral · YouTube ↗
      Mentions that lemon is loaded with vitamin C, and when combined with coffee, vitamin C significantly increases the bioavailability of antioxidants in the coffee.
    • 25 Oct 2026 · neutral · YouTube ↗
      Explains that the normal requirements for potassium are 4,700 mg every single day, and that very few people get half of that amount. They describe potassium's role in the sodium potassium pump, which is essential for cellular electricity, muscle contraction, and heart function. Deficiency can lead to tiredness, muscle cramps, heart palpitations, or rising blood pressure.
    • 25 Oct 2026 · recommends · X ↗
      Recommends increasing potassium to restore balance and support healthy blood pressure.
    • 25 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends magnesium, specifically magnesium glycinate, stating it is key for D3 and K2 to work and is probably more important than calcium for building bone.
    • 25 Oct 2026 · Magnesium · recommends · X ↗
      Recommends increasing magnesium to restore balance and support healthy blood pressure.
    • 25 Oct 2026 · Vitamin C · recommends · Facebook ↗
      Dr. Berg states that Vitamin C helps fight biofilms and is essential for making collagen in gums, teeth, and capillaries.
    • 25 Oct 2026 · Calcium · warns · YouTube ↗
      Warns that bone loss cannot be fixed with just calcium, as bone is primarily collagen with other essential minerals.
    • 24 Oct 2026 · Magnesium · recommends · Instagram ↗
      Dr. Eric Berg suggests that magnesium could help support deeper, more restful sleep.
    • 24 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends Magnesium Glycinate, noting that the combination of magnesium and glycine is helpful for connective tissue, sleep, and reducing stress.
  • Thomas DeLauer · Potassium · uses
    • 28 Oct 2026 · uses · YouTube ↗
      Uses Element's cans which contain 100 milligram potassium, finding that electrolytes help his workout performance.
    • 28 Oct 2026 · Magnesium · uses · YouTube ↗
      Uses Element's cans which contain 30 milligram magnesium, finding that electrolytes help his workout performance.
    • 26 Oct 2026 · Vitamin C · recommends · YouTube ↗
      Recommends taking vitamin C along with collagen about an hour before a workout for connective tissue benefits.
    • 24 Oct 2026 · uses · YouTube ↗
      Uses Element's 100 mg potassium cans first thing in the morning to prime his day and help with workout performance.
    • 24 Oct 2026 · Magnesium · uses · YouTube ↗
      Uses Element's 30 mg magnesium cans first thing in the morning to prime his day and help with workout performance.
    • 23 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends magnesium around the time one would normally break a fast to calm the brain and dull feelings of conditioned hunger.
    • 23 Oct 2026 · Vitamin C · uses · YouTube ↗
      Uses vitamin C as part of their immunity duo, stating it is important for boosting the immune system, especially during cold and flu season.
    • 8 Oct 2026 · Magnesium · recommends · Facebook ↗
      Recommends magnesium, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
    • 6 Oct 2026 · Magnesium · neutral · YouTube ↗
      Notes that modern agricultural practices have led to soils depleted of trace minerals like magnesium, resulting in widespread magnesium deficiency.
    • 4 Oct 2026 · Vitamin C · recommends · YouTube ↗
      Recommends consuming vitamin C to aid in NADPH recycling, which is necessary for glutathione to be reused after neutralizing oxidative stress.
    • 1 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends taking some magnesium glycinate tonight to help calm down and sleep.
    • 29 Sep 2026 · Vitamin C · uses · YouTube ↗
      Takes Purity's liquid liposomal vitamin C for immune support and overall wellness, finding it easy to add to water, juice, or take straight up due to its good taste.
    • 25 Sep 2026 · Magnesium · neutral · Facebook ↗
      Mentions that magnesium in pumpkin seeds relaxes bronchial smooth muscle.
    • 18 Sep 2026 · Magnesium · neutral · Facebook ↗
      Compares magnesium content, stating bananas have 32mg and pumpkin seeds have 156mg per ounce, a 5x difference.
  • Ben Greenfield · Potassium · uses
    • 22 Oct 2026 · uses · YouTube ↗
      Says he is drinking LMNT, which contains sodium, potassium, and magnesium, and states that he actually drinks this stuff.
    • 29 Oct 2026 · Magnesium · uses · YouTube ↗
      Uses magnesium during surgery because it is neuroprotective.
    • 29 Oct 2026 · Vitamin C · recommends · YouTube ↗
      States that vitamin C is extremely important for collagen turnover and cites orthopedic data showing that 500 mg to 1 g of vitamin C can reduce the rate of complex regional pain in total knee replacements and wrist fractures.
    • 22 Oct 2026 · Magnesium · uses · YouTube ↗
      Says he is drinking LMNT, which contains sodium, potassium, and magnesium, and states that he actually drinks this stuff.
    • 21 Oct 2026 · Vitamin A · neutral · Instagram ↗
      Notes that Vitamin A is a fat-soluble vitamin that supports healthy skin cell turnover.
    • 15 Oct 2026 · Magnesium · recommends · Podcast ↗
      Mentions magnesium as part of a bare-minimum protocol.
    • 15 Oct 2026 · Magnesium · recommends · YouTube ↗
      Advises getting red blood cell magnesium levels to the high end of the range as a minimum step for overall health and to slow down heart disease.
    • 15 Oct 2026 · Vitamin C · recommends · Podcast ↗
      Mentions vitamin C as part of a bare-minimum protocol.
    • 24 Sep 2026 · Vitamin C · neutral · YouTube ↗
      Notes that while vitamin C has significant value, the optimal dose is a vexed question, and high doses might not always be beneficial, potentially blunting the hormetic effects of exercise.
    • 3 Sep 2026 · Magnesium · recommends · YouTube ↗
      Recommends supplementing with magnesium threonate if one is low in magnesium, as it crosses the blood-brain barrier and is demonstrated to increase hippocampus plasticity, theoretically making one smarter and improving memories.
    • 25 Aug 2026 · Magnesium · uses · Facebook ↗
      Uses Magnesium Breakthrough from BIOptimizers as part of their daily stack, taking four capsules in the evening to support relaxation, recovery, and a good night of sleep.
    • 25 Aug 2026 · Vitamin C · neutral · X ↗
      Notes that IV vitamin C has been used for decades for cancer patients with almost no standardization and that he receives many questions about its effectiveness and combination with chemo.
    • 17 Aug 2026 · recommends · Instagram ↗
      Recommends Celtic Sea Salt's new electrolyte drink 'Hydrate' for replenishing electrolytes and trace minerals lost through sweat, noting it contains 70 naturally occurring trace minerals, magnesium, taurine, and potassium, with no added sugar, artificial colors, or synthetic ingredients.
    • 17 Aug 2026 · Magnesium · recommends · Facebook ↗
      Recommends Celtic Sea Salt's new electrolyte drink "Hydrate" for replacing electrolytes and trace minerals lost through sweat, noting it contains 70 naturally occurring trace minerals, plus magnesium, taurine, and potassium.
  • Dr. Mark Hyman · Potassium · warns
    • 16 Oct 2026 · warns · Facebook ↗
      Warns that potassium bromate, a dough conditioner banned in the EU, UK, and Canada, is still allowed in U.S. bread.
    • 1 Nov 2026 · Magnesium · uses · Facebook ↗
      Recommends considering magnesium glycinate before bed for nervous system support, deeper sleep quality, and to help the body transition into rest, and states that they take it every night.
    • 21 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends Magnesium Breakthrough Advanced 10 from Bioptimizers for restful sleep, muscle recovery, stress resilience, and metabolic health, especially during stressful times of the year.
    • 21 Oct 2026 · Iron · neutral · YouTube ↗
      Mentions iron as an existing biomarker that plays a role in mental health, which Function Health includes in their measurements.
    • 19 Oct 2026 · Vitamin A · neutral · YouTube ↗
      Mentions that vitamin A levels can be looked at to get a deep sense of what's happening with nutrient levels.
    • 14 Oct 2026 · Magnesium · recommends · TikTok ↗
      Recommends magnesium because it is involved in over 600 reactions in the body and up to 80% of people may have low levels that never get flagged on a standard blood test.
    • 12 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends magnesium as a basic supplement during detoxification to support pathways, help with constipation, and provide electrolytes.
    • 12 Oct 2026 · Vitamin C · recommends · YouTube ↗
      Recommends vitamin C as a basic supplement during detoxification to help with inflammation and detoxification.
    • 7 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends Magnesium Breakthrough Advanced 10 from Biooptimizers, which contains 10 bioavailable forms and 550 mg of elemental magnesium, to support restful sleep, restorative sleep, muscle recovery, stress resilience, and metabolic health.
    • 7 Oct 2026 · Vitamin C · neutral · Podcast ↗
      Dr. Hyman mentions vitamin C as an advanced therapy for skin repair.
    • 7 Oct 2026 · Vitamin C · recommends · YouTube ↗
      Mentions topical vitamin C as an antioxidant that can help skin with aging.
    • 6 Oct 2026 · Vitamin C · neutral · X ↗
      Mentions that what they do when a cold comes on is not just vitamin C.
    • 5 Oct 2026 · Vitamin A · recommends · YouTube ↗
      Recommends taking 50,000 units of vitamin A for three to five days right at the onset of symptoms if one feels they might be getting sick.
    • 5 Oct 2026 · Vitamin C · recommends · YouTube ↗
      Recommends ensuring adequate vitamin C intake on a regular basis for immune support, stating it's important for healthy immune function despite mixed data on its effectiveness for colds.
  • Siim Land · Potassium · neutral
    • 30 Sep 2026 · neutral · X ↗
      Lists potatoes and fruit as sources of Potassium.
    • 29 Oct 2026 · Vitamin C · recommends · Instagram ↗
      Recommends taking vitamin C with collagen to support joint collagen synthesis.
    • 25 Oct 2026 · Magnesium · recommends · Instagram ↗
      States that Magnesium can be a useful addition for some people for sleep.
    • 14 Oct 2026 · Vitamin C · neutral · Instagram ↗
      States that vitamin C is needed for initiating collagen synthesis and that higher vitamin C intake appears to increase vitamin C content in the skin.
    • 14 Oct 2026 · Iron · neutral · Instagram ↗
      Mentions that iron is a mineral necessary for making collagen.
    • 12 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends magnesium for sleep, especially deep sleep, and suggests trying better types like Threonate, Biscinate, or Torate, referencing a study where magnesium supplementation improved deep sleep.
    • 7 Oct 2026 · Magnesium · recommends · Instagram ↗
      Recommends Magnesium for blood pressure, migraines and deficiency, based primarily on human research, especially randomized controlled trials showing measurable benefits.
    • 6 Oct 2026 · Magnesium · neutral · X ↗
      Lists Magnesium as one of 15 supplements backed by human studies.
    • 30 Sep 2026 · Vitamin C · neutral · X ↗
      Lists sauerkraut and fruit as sources of Vitamin C.
    • 30 Sep 2026 · Magnesium · recommends · Instagram ↗
      States that magnesium is a fundamental mineral governing over 600 enzymes and metabolic reactions, and recommends that most people need at least 400-500 mg/d for health, with some needing up to 600 mg/d.
    • 30 Sep 2026 · Magnesium · neutral · X ↗
      Lists seafood and pumpkin seeds as sources of Magnesium.
    • 30 Sep 2026 · Calcium · neutral · X ↗
      Lists dairy and sardines as sources of Calcium.
    • 30 Sep 2026 · Vitamin A · neutral · X ↗
      Lists liver and carrots as sources of Vitamin A.
    • 6 Sep 2026 · Vitamin C · neutral · X ↗
      Notes that Vitamin C is one of several supplements with human evidence.
  • Peter Attia · Potassium · recommends
    • 6 Sep 2026 · recommends · YouTube ↗
      States there is some evidence that increasing dietary potassium through potassium-rich foods like bananas and potatoes, rather than supplements, can lower blood pressure.
    • 1 Jun 2026 · Magnesium · neutral · Podcast ↗
      Peter reviews the evidence for select off-label medications and supplements commonly used for sleep, including glycine, magnesium, ashwagandha, and phosphatidylserine.
    • 4 Jan 2026 · Magnesium · recommends · YouTube ↗
      Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
    • 15 Sep 2025 · Magnesium · recommends · Podcast ↗
      Peter discusses electrolytes and fiber and the ketogenic diet, specifically preventing magnesium loss.
    • 6 Aug 2025 · Vitamin A · neutral · YouTube ↗
      Notes that in mouse studies, there was a combined effect of alpha ketoglutarate with vitamin A for male mice.
    • 20 Jul 2025 · Vitamin A · neutral · YouTube ↗
      In mouse studies, Peter Attia's team found a combined effect of AKG with Vitamin A for male mice.
    • 9 Jul 2025 · Magnesium · recommends · YouTube ↗
      Recommends magnesium as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 300 to 500 milligrams as a minimum, and personally aims for about a gram of supplemental magnesium.
    • 9 Jul 2025 · Calcium · recommends · YouTube ↗
      Recommends calcium as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 1,000 to 1,200 milligrams, which can be supplemented with calcium carbonate or calcium citrate.
    • 6 Jul 2025 · Magnesium · recommends · YouTube ↗
      Recommends magnesium for optimizing bone mineral density, suggesting a daily intake of 300 to 500 milligrams as a minimum, but personally aims for about a gram.
    • 6 Jul 2025 · Calcium · neutral · YouTube ↗
      Explains that bone is 50 to 70% mineral, predominantly calcium, and that virtually all of the body's calcium is contained within bone, making bone important for calcium homeostasis.
    • 3 Jul 2025 · Vitamin C · stopped · YouTube ↗
      Recommends vitamin C as an important molecule for skin, noting its role as a precursor for collagen synthesis, a powerful antioxidant, and a regulator of complexion for even skin tone.
    • 29 Jun 2025 · Vitamin C · stopped · YouTube ↗
      Tried a vitamin C serum mixed with ferulic acid but stopped using it because she hated the smell. She notes that topical application of vitamin C far exceeds the levels achievable by ingestion for skin benefits.
    • 8 Jun 2025 · Iron · recommends · YouTube ↗
      Recommends iron supplements for women of reproductive age who are iron deficient.
    • 1 Jun 2025 · Vitamin A · neutral · YouTube ↗
      Mentions that a lot of the profound transformation of a cell into a sperm, specifically the making of a tail, is vitamin A driven.
  • Andrew Huberman · Potassium · uses
    • 27 Jul 2026 · uses · YouTube ↗
      Uses Element, an electrolyte drink with sodium, magnesium, and potassium in correct ratios and no sugar, to ensure adequate hydration and electrolytes, especially when starting days fast or during physical exercise.
    • 22 Oct 2026 · Magnesium · neutral · Podcast ↗
      Discusses Magnesium Threonate as a tool for falling asleep.
    • 7 Aug 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 27 Jul 2026 · Magnesium · uses · YouTube ↗
      Uses Element, an electrolyte drink with sodium, magnesium, and potassium in correct ratios and no sugar, to ensure adequate hydration and electrolytes, especially when starting days fast or during physical exercise.
    • 20 Jul 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 20 Jul 2026 · Magnesium · recommends · YouTube ↗
      Confirms that magnesium is absolutely important for cognitive function, noting studies show those with lower magnesium intakes tend to perform less well on cognitive function tests, and it's related to brain changes over time and dementia risk.
    • 20 Jul 2026 · Iron · recommends · YouTube ↗
      States that Iron is one of the critical nutrients with the best evidence for cognitive function and reducing the risk of dementia.
    • 13 Jul 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 12 Jul 2026 · Magnesium · uses · X ↗
      He takes 400 mg of Magnesium L-Threonate from Double Wood before bed for sleep.
    • 6 Jul 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 22 Jun 2026 · Magnesium · uses · X ↗
      Takes 400 mg of magnesium L-threonate before bed for sleep.
    • 18 Jun 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 17 Jun 2026 · Vitamin C · uses · X ↗
      Takes a multivitamin every day for longevity.
    • 17 Jun 2026 · Vitamin A · uses · X ↗
      Takes a multivitamin every day for longevity.
  • Dr. Rhonda Patrick · Potassium · recommends
    • 23 Jun 2026 · recommends · Facebook ↗
      Recommends getting enough potassium, noting that most people get too much sodium and not enough potassium.
    • 29 Oct 2026 · Magnesium · neutral · Facebook ↗
      Magnesium supplementation has lowered blood pressure in randomized controlled trials. An analysis of 34 trials involving over 2,000 participants found modest reductions in both systolic and diastolic pressure, with a median dose of 368 mg/day.
    • 16 Oct 2026 · Magnesium · warns · Facebook ↗
      Warns that some magnesium supplements make the dose look much larger than it really is and that labels can fool people.
    • 29 Sep 2026 · Magnesium · recommends · YouTube ↗
      Mentions magnesium as an important nutrient component for testosterone.
    • 28 Sep 2026 · Magnesium · warns · YouTube ↗
      Warns that some supplement companies mislead consumers by listing the total compound weight of magnesium citrate as the elemental magnesium dose, when the actual elemental magnesium content is much lower, potentially around 44-66 milligrams.
    • 2 Sep 2026 · Magnesium · neutral · Facebook ↗
      States there is not yet strong, consistent evidence that magnesium supplementation reliably improves sleep, noting that while some meta-analyses suggest it can improve sleep quality scores, sleep efficiency, and sleep duration, individual studies are inconsistent and several have found no meaningful effect.
    • 25 Aug 2026 · Vitamin C · neutral · Facebook ↗
      Lutein and zeaxanthin can also be obtained from certain multivitamins.
    • 25 Aug 2026 · Vitamin A · neutral · Facebook ↗
      Lutein and zeaxanthin can also be obtained from certain multivitamins.
    • 10 Aug 2026 · Magnesium · neutral · Facebook ↗
      States that magnesium may help modestly lower blood pressure by playing an important role in regulating vascular tone and influencing calcium signaling, with studies showing a reduction in systolic and diastolic blood pressure by 2 mmHg at a dose of around 370 mg/day for about 3 months.
    • 10 Aug 2026 · Magnesium · recommends · X ↗
      Recommends considering magnesium to improve mood.
    • 28 Jul 2026 · Magnesium · recommends · Facebook ↗
      Recommends Magnesium, stating that roughly half of Americans don’t get enough and it is a cofactor for over 300 biological processes, including DNA repair and energy production.
    • 29 Jun 2026 · Magnesium · neutral · Facebook ↗
      Mentions that kale delivers magnesium, a micronutrient many diets fall short on.
    • 29 Jun 2026 · Calcium · neutral · Facebook ↗
      Mentions that kale delivers calcium, a micronutrient many diets fall short on.
    • 26 Jun 2026 · Magnesium · recommends · Facebook ↗
      Recommends Magnesium, stating it is a cofactor for over 300 biological processes, including DNA repair, energy production, and sleep regulation.
  • Dave Asprey · Potassium · recommends
    • 7 Feb 2026 · recommends · YouTube ↗
      Recommends having more potassium during a fast to increase mineral intake.
    • 31 Oct 2026 · Magnesium · neutral · YouTube ↗
      Mentions magnesium in the context of sleep but states that it doesn't address the core issue of waking up during the night.
    • 25 Oct 2026 · Magnesium · recommends · Podcast ↗
      Suggests that magnesium may help slow aging, support cellular repair, and improve sleep.
    • 24 Oct 2026 · Vitamin C · recommends · Facebook ↗
      Recommends taking vitamin C for better skin health.
    • 17 Oct 2026 · Magnesium · neutral · Facebook ↗
      States that magnesium can affect how the body responds to a supplement.
    • 7 Oct 2026 · Vitamin C · uses · YouTube ↗
      States that currently, he is only taking vitamin C and vitamin D.
    • 27 Sep 2026 · Magnesium · recommends · Podcast ↗
      Recommends fixing sleep with 300mg of Magnesium 101 before bed if diet and exercise aren't melting stubborn belly fat.
    • 7 Sep 2026 · Magnesium · uses · Instagram ↗
      Dave Asprey says his daily routine includes magnesium as part of a carefully developed combination for longevity.
    • 5 Sep 2026 · Magnesium · recommends · YouTube ↗
      Recommends magnesium glycinate for sleep, stating that trials show it helps people fall asleep about 17 minutes faster and that he finds it incredibly effective.
    • 3 Sep 2026 · Magnesium · recommends · YouTube ↗
      Mentions magnesium glycinate as one of the five gut-friendly, extensively researched ingredients in Kill Switch that helps with natural sleep.
    • 3 Sep 2026 · Vitamin A · recommends · YouTube ↗
      Recommends real vitamin A for people on the spectrum, noting that many cannot convert plant vitamin A and need the good stuff he includes in his Vitam DAKNE product.
    • 29 Aug 2026 · Magnesium · recommends · YouTube ↗
      Dave Asprey recommends Magnesium Glycinate for sleep, noting human studies show it helps people fall asleep faster, is safe, and works on a fundamental aspect of health, unlike magnesium oxide which acts as a laxative.
    • 15 Aug 2026 · Magnesium · recommends · YouTube ↗
      Dave Asprey recommends adding 300 or 400 mg of magnesium glycinate before bed to improve deep sleep quality, support growth hormone release, and burn visceral fat while asleep.
    • 14 Aug 2026 · Vitamin C · neutral · Podcast ↗
      Dave Asprey reflects on how new research clarifies the mechanism behind IV vitamin C's anti-cancer effect, vindicating a decades-old idea that was dismissed for the wrong reasons.
  • Bryan Johnson · Magnesium · uses
    • 22 Oct 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 15 Aug 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 8 Jul 2026 · Iron · stopped · YouTube ↗
      Has had low iron for 11 years and despite eating meat and trying all forms of iron supplementation at different times and sequences, none of it worked to raise his iron or ferritin levels.
    • 7 Jul 2026 · Iron · uses · X ↗
      Had low iron for 11 years, with ferritin averaging 38 ng/mL, and has finally boosted it back to healthy levels.
    • 4 May 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 2 May 2026 · uses · X ↗
      He takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 21 Apr 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 15 Apr 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 14 Apr 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 8 Apr 2026 · uses · X ↗
      Takes 400 mg of magnesium L-threonate before bed for sleep.
    • 7 Apr 2026 · uses · X ↗
      He takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 5 Apr 2026 · uses · X ↗
      Takes 400 mg of magnesium threonate before bed for sleep.
    • 5 Jun 2025 · Phosphorus · recommends · YouTube ↗
      Recommends phosphorus as a mineral that, along with calcium, magnesium, and boron, is deposited to fortify the bone structure.
    • 5 Jun 2025 · Calcium · recommends · YouTube ↗
      Recommends calcium as a mineral that, along with phosphorus, magnesium, and boron, is deposited to fortify the bone structure after the collagen scaffold is in place.

RAL Summary

Members OnlyTier 4 for Muscle and Strength

Its studied ingredients are not at the doses that worked in studies, and reviews are not strong enough on their own. The final check notes: The grade rests only on trace nutrients like potassium and vitamins, not on whey protein isolate, the main ingredient, so the evidence behind the tier does not describe what this product mainly is.

  • Emerging: not enough evidence to rank higher yet.
  • Vitamin A: amount hidden in a blend

Where the evidence disagrees: 46 of the 91 human studies found no effect.

More Details

Members OnlyBody systems · Combine with · Possible side effects

Body systems: Muscular system, Skeletal system, Digestive system

Combine with: For muscle building, pair this with creatine monohydrate (3-5 g daily) for strength and lean mass, and a vitamin D3 and K2 combination to support muscle and bone function. Magnesium glycinate can aid recovery and sleep, and omega-3 fish oil supports recovery and cardiovascular health. If blood pressure support is the actual goal, add targeted ingredients like magnesium, potassium-rich foods, CoQ10, beetroot or nitrate extract, and omega-3s, and consult a healthcare provider for monitoring.

Possible side effects: No major side effects reported in the studies; reviewers mainly found it very sweet, and one noted minimal digestion issues.

Supplement Facts

Potassium 240 mg · Total Carbohydrates 2 g · Vitamin A 0
Supplement Facts
Serving Size 37 Gram(s)
Servings Per Container 12
Amount Per Serving% Daily Value
Calories130
Total Fat1 g
Cholesterol5 mg
Sodium95 mg
Potassium240 mg
Total Carbohydrates2 g
Protein30 g
Vitamin A0
Vitamin C0
Calcium0
Iron0
Phosphorus0
Magnesium0

Other ingredients: Whey Protein isolate, Cocoa, Natural flavors, Soy Lecithin, Cellulose Gum, Xanthan Gum, Acesulfame Potassium, Sucralose, Carrageenan.

Directions: For an extra treat, blend with fruit or your favorite non-fat frozen yogurt. *Use in conjunction with an intense daily exercise program and a balanced diet including an adequate caloric intake. DIRECTIONS: For adults, add one (1) scoop (37 g) to 8 fluid ounces of water or your favorite beverage. Mix in your Precision Engineered shaker or a blender and drink immediately for best results. You can drink Precision Engineered Whey Protein any time during the day to add extra high quality protein to your daily calorie intake. Be sure to figure the extra calories provided by milk, juice or whatever you may add to your Precision Engineered Whey Protein. Increase or decrease the amount of liquid added to achieve desired consistency.

Barcode (UPC) 766443314714 · Label source: NIH label database · Report a label change

Show entire label

More muscle and strength products

Members OnlyThe highest ranked for the same goal

Read more

Our articles on this subject

Graded November 5, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.