Trace Minerals Ionic Zinc 50 mg Review

Ionic Zinc is a liquid zinc supplement from Trace Minerals, presented on the page as a rich concentrated liquid that provides zinc in ionic form. The company states that ionic form is the form most recognisable by the body, and that the formula also contains a full spectrum of ionic trace minerals to promote body-mineral balance. The product is listed under the benefits of supporting the immune system, helping to maintain healthy skin, supporting normal growth and development, aiding in the formation of connective tissue, and promoting healthy digestion and metabolism. The page highlights that ionic form is the most bioavailable form of zinc, that the liquid form allows for variable dosing, and that the full spectrum of ionic trace minerals supports body-mineral balance. The ingredient list names zinc, which is described as promoting immunity, digestion, and healthy growth and development. It also names chloride, which is described as helping to maintain proper fluid balance, aiding digestion, and supporting nerve and muscle function. The formula additionally includes the ConcenTrace trace mineral complex, described as offering a full spectrum of ionic trace minerals to promote healthy digestion and metabolism and to support body-mineral balance. The suggested use is to shake well and take 1.25 mL, which is about one quarter of a teaspoon, spread throughout the day. People with a sensitive stomach are advised to start with a half serving. The manufacturer recommends adding the liquid to flavoured beverages or food to mask the strong mineral flavour, and says to take it on a full stomach. The product should not be refrigerated and should be kept out of the reach of children. The page lists no known allergens. The brand states that it uses zinc sulfate in this product, according to its frequently asked questions. The page also says that excessive zinc can inhibit copper absorption, so balance and moderation are advised, and that a healthcare provider should be consulted with any concerns. The product carries a 30 day free trial, free return shipping and easy exchanges under the Feel the Difference Guarantee. A subscribe and save option is available with 25 percent off the first order and 20 percent off recurring orders.

Product Focus: Immune HealthAlso covers:BreathingDigestion
Tier ⓘ
Tier 3 · Rank 25
Tier 3 · Reviewed. Strong review agreement, with limited or early support from human studies. Rank 25 within Tier 3 for Immune Health; 59 of 123 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
73 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
85% of 6,824
Biohacker Mentions
10 of 10
Cost per month
$10

Study, Trial or Testing Result Summary

Members Only42 human studies · 14 improved

1 of these 42 human studies gave the ingredient by drip, not by mouth.

42 human studies14 improved17 no effect19,970 people studied

The main ingredient, zinc, is here at a full dose. In large reviews, zinc made little or no difference to catching a cold [1][2]. Taken once a cold started, it shortened colds by about 2.4 days, with more mild side effects [1]. In adults it did not lower respiratory infections but symptoms lasted about 47 percent less time [3]. An older review of lozenges found no clear benefit at 7 days [4]. In preschool children, daily zinc cut infection days by 12 percent, which was not significant [5]. The 50 mg dose is above the daily recommended limit, so members may choose to take less. Copper is also at a full dose. It helped infants recovering from malnutrition [6] and burn patients when given with other minerals [7], but there is no solid proof it helps healthy people [8]. The doses of magnesium, chloride, boron and the trace mineral complex are not known to match studied amounts. Magnesium studies were mixed [9][10]. The only chloride study used inhaled salt mist for lung immunity, not chloride taken by mouth [11]. Boron has only animal studies that did not test a supplement [12]. Animal and cell studies are never counted.

See all 42 studies →Hide the studies

Review Totals and Summary

Members Only6,824 reviews · 85% positive
6,824 reviews · IHerb 3,788 · Amazon 1,482 · Covenanthealthproducts 1,147 · Vitacost 299 · Walmart 34 · GNC 26 · EBay 23 · Kroger 9 · Trace Minerals website 6 · Nahdi Global 5 · NAHD Online 5
85% positive8% neutral7% negative

Buyers mostly like this liquid zinc, mainly for immune support, but the strong mineral taste and some oddities in how it looks keep coming up. It carries about 5,646 ratings across the stores, and most written reviews are positive. No gummy, capsule or powder reviews appeared in what I read, so this covers the liquid only. **What buyers say it did for them:** Immune support is the main benefit people name. One says it is "Fantastic immunity," and another says "I don't remember the last time I had a cold." Another buyer calls it a zinc supplement that "works better than any pill I've tried." One reports it helps a zinc deficiency, and one store's summary mentions a buyer who feels it is reducing hair loss, after only two weeks. Not everyone can tell: one buyer takes it for immunity and a thyroid boost and says "I honestly have zero way of checking of its efficiency." **What buyers complain about:** Taste is the main complaint, followed by stomach upset. One review is simply "It tastes GROSS." Several say to take it with food, warning that otherwise "you will feel very ill." Store summaries mention one sensitive-stomach buyer who vomited after a small dose, and one who felt hyper from the preservative potassium benzoate. Appearance worries some buyers. Reviews mention blue bits, black particles in the liquid, and ink on the dropper that "rubbed off easily." One buyer was so put off by this that they asked who would "still ingest this." Another says the liquid turns milky blue after about a month but still works the same for them. **Taste, smell, form:** Buyers describe the flavor as strong, bitter and metallic. The fixes they suggest are: - Tonic water: "you won't taste the strong minerally taste." - Tomato juice, which one buyer says works where other juices don't. - Orange juice with a juice chaser. - A spoonful of almond butter. Some advise holding a dose briefly under the tongue after a meal. It comes in a glass bottle with a plastic dropper. One buyer finds the dropper convenient but says "a very precise dosage is not possible." Blue bits need vigorous shaking to dissolve, and in water the liquid "sinks like a rock," so it needs stirring and drinking right away. **Value for money:** Few buyers comment on price, but those who do are positive. One calls it "a REALLY GOOD value for the money." Store summaries also mention a fair price and reasonable cost. **Who it suits and who it didn't:** It suits people who want a potent, absorbable zinc and are willing to mask the taste in a drink and take it with a meal. One buyer picked it over capsules because it felt "so well balanced," and likes that it contains copper. It suited people with sensitive stomachs less well. One reviewer advises people with gastrointestinal problems to use it carefully. It also suited people bothered by sediment or ink marks less well, and those who can't tolerate strong flavors.

Biohacker Summary

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

Of the ten panelists, nine spoke about zinc, and the panel leans supportive: three recommend it, three use it, and the rest are neutral or cautious. People take it for immune support, wound and tissue healing, testosterone, and sleep, and one pairs it with vitamin C for fall and winter. One panelist takes 15 mg in the morning for longevity, while another described a short course of 30 grams a day around surgery for wound healing. The one caution is from a panelist who warned that overshooting zinc can lead to a copper deficiency. One panelist also mentioned zinc carnosine for the gut lining, and another mentioned zinc in a sunscreen, so those are different uses than a plain zinc supplement. Magnesium is a smaller ingredient in this product, and most of the panel favors it for sleep, with glycinate and threonate the preferred forms.

See all 10 biohackers →Hide the biohackers
  • Dr. Eric Berg · Zinc · recommends
    • 7 Nov 2026 · recommends · Facebook ↗
      Recommends zinc as a trace mineral, noting that modern farming practices deplete it from the soil, leading to low levels in crops.
    • 7 Nov 2026 · Magnesium · recommends · Facebook ↗
      Recommends Magnesium glycinate, noting its high absorption rate compared to magnesium oxide, and its support for energy, sleep, muscle relaxation, and vitamin D function.
    • 7 Nov 2026 · Magnesium · neutral · Instagram ↗
      Dr. Berg states that when nutrients like magnesium are too low, fatigue and weakness can follow.
    • 6 Nov 2026 · neutral · Instagram ↗
      Notes that white spots on nails point to zinc deficiency, which is usually depleted by eating sugar and refined carbs.
    • 6 Nov 2026 · recommends · YouTube ↗
      States that zinc greatly supports natural killer cells.
    • 6 Nov 2026 · Magnesium · recommends · Podcast ↗
      Recommends focusing on magnesium to support stronger bones if a neck hump is associated with osteoporosis.
    • 6 Nov 2026 · Magnesium · neutral · Instagram ↗
      Explains that leg and calf cramps are most often caused by low magnesium, with leafy greens being a top source.
    • 6 Nov 2026 · Magnesium · recommends · YouTube ↗
      States that magnesium is a cofactor that allows B1 to work more efficiently.
    • 4 Nov 2026 · Magnesium · recommends · YouTube ↗
      States that magnesium is the most important mineral for energy production, as one cannot make energy without it.
    • 1 Nov 2026 · neutral · YouTube ↗
      States that zinc is needed to absorb magnesium.
    • 1 Nov 2026 · Magnesium · neutral · YouTube ↗
      Magnesium is involved in 300 to 600 enzyme reactions, acts as a biological brake pedal, is the master controller over calcium, and is involved in making ATP, the energy currency of the body. It takes energy to go to sleep, and magnesium is required for relaxation and good sleep. Magnesium also helps balance cortisol levels and calm you.
    • 31 Oct 2026 · recommends · YouTube ↗
      Recommends ensuring sufficient zinc intake because the prostate needs enough zinc for the conversion from testosterone to DHT to be smooth and optimized.
    • 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.
    • 28 Oct 2026 · Magnesium · neutral · YouTube ↗
      Notes that magnesium could also be a factor in preventing muscle cramps.
  • Dr. Rhonda Patrick · Zinc · neutral
    • 6 Nov 2026 · neutral · Instagram ↗
      Mentions that getting too little zinc may play a role in declining testosterone levels, and that zinc helps the body make testosterone.
    • 8 Nov 2026 · Magnesium · recommends · Instagram ↗
      Explains that magnesium helps the body activate and metabolize vitamin D, and that magnesium intake has been associated with lower odds of vitamin D deficiency and insufficiency.
    • 6 Nov 2026 · Magnesium · neutral · Instagram ↗
      Mentions that getting too little magnesium may play a role in declining testosterone levels.
    • 3 Nov 2026 · Magnesium · recommends · X ↗
      Recommends getting enough magnesium, around 300–400 mg daily from diet and supplements, as it is an essential cofactor for vitamin D metabolism. Magnesium glycinate is a good form.
    • 1 Nov 2026 · Magnesium · neutral · YouTube ↗
      Mentions magnesium as one of the micronutrients found in multivitamins that people often don't get enough of from their diets.
    • 31 Oct 2026 · Magnesium · neutral · YouTube ↗
      Explains that magnesium helps control blood pressure by boosting the production of substances that relax blood vessels and improve cardiovascular health, citing a meta-analysis that found magnesium supplementation at an average dose of 368 mg per day notably lowers both systolic and diastolic blood pressure.
    • 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 · recommends · YouTube ↗
      Notes that not getting enough zinc can affect testosterone, as zinc is very important for testosterone synthesis.
    • 29 Sep 2026 · Magnesium · recommends · YouTube ↗
      Mentions magnesium as an important nutrient component for testosterone.
    • 28 Sep 2026 · recommends · YouTube ↗
      Recommends men take a 30 milligram zinc supplement for sperm health when preparing for IVF.
    • 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.
    • 21 Aug 2026 · neutral · Instagram ↗
      Discusses findings from a meta-analysis on zinc supplementation, noting it improved insulin resistance, inflammation, and oxidative stress in people with diabetes or prediabetes, and explains its biological role in the pancreas.
  • Andrew Huberman · Zinc · neutral
    • 5 Nov 2026 · neutral · YouTube ↗
      Notes that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
    • 4 Nov 2026 · Magnesium · recommends · Instagram ↗
      Notes that Les Spellman's team includes 'Magnesium timed right' as part of their game plan to optimize recovery in unfavorable conditions.
    • 29 Oct 2026 · uses · YouTube ↗
      Zinc carnosine to support and improve the lining of your gut.
    • 26 Oct 2026 · uses · YouTube ↗
      Notes that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
    • 22 Oct 2026 · Magnesium · neutral · Podcast ↗
      Discusses Magnesium Threonate as a tool for falling asleep.
    • 19 Oct 2026 · recommends · YouTube ↗
      States that AG1 Pro contains zinc carnosine to support and improve the lining of the gut.
    • 12 Oct 2026 · uses · YouTube ↗
      Uses AG1 Pro, which contains zinc carnosine to support and improve the lining of the gut.
    • 28 Sep 2026 · uses · YouTube ↗
      States that AG1 Pro contains zinc carnosine to support and improve the lining of the gut, and he was already taking some of these ingredients separately.
    • 21 Sep 2026 · uses · YouTube ↗
      States that AG1 Pro includes zinc carnosine, which he was already taking separately, to support and improve the lining of the gut.
    • 14 Sep 2026 · uses · YouTube ↗
      Personally takes zinc carnosine, which is included in AG1 Pro to support and improve the lining of the gut.
    • 31 Aug 2026 · uses · YouTube ↗
      AG1 Pro has zinc carnosine to support and improve the lining of your gut. Some of these ingredients I personally was already taking separate from the AG1 formula.
    • 24 Aug 2026 · recommends · YouTube ↗
      States that AG1 Pro contains zinc carnosine to support and improve the lining of your gut.
    • 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.
  • Ben Greenfield · Zinc · warns
    • 29 Oct 2026 · warns · YouTube ↗
      Ben Greenfield's formulation includes 30 grams of zinc a day, taken for one week before surgery and two weeks after, as it is an important cofactor for wound healing.
    • 29 Oct 2026 · Copper · neutral · YouTube ↗
      Mentions that overshooting zinc can lead to a copper deficiency, highlighting the interplay between these elements.
    • 29 Oct 2026 · Magnesium · uses · YouTube ↗
      Uses magnesium during surgery because it is neuroprotective.
    • 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.
    • 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.
    • 10 Oct 2026 · recommends · YouTube ↗
      Emphasizes that zinc sufficiency is crucial for immunity because the thymus-derived peptide thymulin, which trains lymphocytes, requires zinc to be active.
    • 19 Sep 2026 · recommends · YouTube ↗
      Recommends adding zinc into one's stack because it is a co-factor for enzymes involved in testosterone synthesis and sperm maturation, and zinc deficiency is a reproducible cause of low sperm count.
    • 19 Sep 2026 · neutral · Podcast ↗
      He mentions zinc as a supplement with real human data behind it for male fertility.
    • 8 Sep 2026 · neutral · X ↗
      Zinc may support both testosterone and sperm count.
    • 7 Sep 2026 · Copper · uses · X ↗
      Says Formula IQ CopperIQ Serum has stayed in their routine to close out summer strong.
    • 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.
    • 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 · Zinc · neutral
    • 29 Oct 2026 · neutral · YouTube ↗
      Explains that zinc is important for the body's repair crew, helping to heal damaged tissue, and a deficiency can lead to cuts and wounds taking longer to heal.
    • 4 Nov 2026 · Magnesium · recommends · YouTube ↗
      Recommends magnesium breakthrough advanced ten from Biooptimizers, which is their most complete magnesium formula with 10 bioavailable forms and 550 milligrams of elemental magnesium, designed to support restful restorative sleep, muscle recovery, stress resilience, and metabolic health.
    • 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.
    • 29 Oct 2026 · Magnesium · neutral · YouTube ↗
      Explains that a lack of magnesium can cause muscles and nerves to malfunction, resulting in muscle weakness, twitching, and cramps.
    • 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.
    • 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.
    • 7 Oct 2026 · uses · YouTube ↗
      Gave a patient with psoriatic arthritis a little zinc, which contributed to significant improvement in her condition.
    • 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.
    • 5 Oct 2026 · recommends · YouTube ↗
      Recommends ensuring adequate zinc intake on a regular basis for immune support, noting some data on zinc lozenges for early cold.
    • 30 Sep 2026 · Magnesium · uses · YouTube ↗
      Has recommended magnesium breakthrough from bioptimizers for years and now uses Magnesium Breakthrough Advanced 10 as part of his evening routine, especially during periods of travel, training, and higher stress, to support sleep, muscle recovery, and metabolic health.
    • 22 Sep 2026 · recommends · Instagram ↗
      Recommends correcting nutrient deficiencies with zinc.
    • 22 Sep 2026 · Magnesium · recommends · Instagram ↗
      Recommends correcting nutrient deficiencies with magnesium.
    • 16 Sep 2026 · Magnesium · recommends · YouTube ↗
      Recommends Magnesium Breakthrough Advance 10 from BiOptimizers, which has 10 bioavailable forms of magnesium and more elemental magnesium, as part of his evening routine for sleep, muscle recovery, and metabolic health.
  • Thomas DeLauer · Zinc · uses
    • 23 Oct 2026 · uses · YouTube ↗
      Adds zinc to their immunity duo because it helps them absorb vitamin C, considering the two together a fantastic combination for fall and winter.
    • 5 Nov 2026 · Magnesium · recommends · YouTube ↗
      Recommends taking magnesium glycinate and threonate at night to act as a brake on the nervous system, block excitatory signaling, help wind down, and support serotonin and melatonin production for better sleep.
    • 4 Nov 2026 · Magnesium · neutral · YouTube ↗
      Mentions that magnesium glycinate also helps a lot with sleep.
    • 2 Nov 2026 · Magnesium · neutral · YouTube ↗
      Mentions that restless leg syndrome is often treated with magnesium, but states that the sensation is actually coming from three other issues.
    • 28 Oct 2026 · Magnesium · uses · YouTube ↗
      Uses Element's cans which contain 30 milligram magnesium, finding that electrolytes help his 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.
    • 8 Oct 2026 · recommends · Facebook ↗
      Recommends zinc, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
    • 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.
    • 3 Oct 2026 · neutral · YouTube ↗
      Mentions that more zinc could be beneficial for testosterone, but it's not working on the axis that most people need help with.
    • 1 Oct 2026 · Magnesium · recommends · YouTube ↗
      Recommends taking some magnesium glycinate tonight to help calm down and sleep.
    • 25 Sep 2026 · Magnesium · neutral · Facebook ↗
      Mentions that magnesium in pumpkin seeds relaxes bronchial smooth muscle.
    • 18 Sep 2026 · neutral · Facebook ↗
      Compares zinc content, noting salmon has under 1mg while oysters have 74mg per 100g, a 70x difference.
  • Dave Asprey · Zinc · uses
    • 7 Oct 2026 · uses · YouTube ↗
      Developed a nonnano zinc sunscreen over five years, stating her skin is probably better now than it's ever been.
    • 3 Nov 2026 · Magnesium · uses · Instagram ↗
      Looks at magnesium alongside protein to keep muscle for the long run.
    • 3 Nov 2026 · Magnesium · recommends · YouTube ↗
      Suggests adding magnesium to help keep potassium in the system longer, as they work hand in hand.
    • 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.
    • 17 Oct 2026 · Magnesium · neutral · Facebook ↗
      States that magnesium can affect how the body responds to a supplement.
    • 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 · recommends · YouTube ↗
      Emphasizes the importance of having enough zinc before trying advanced longevity strategies like peptides.
    • 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 · Copper · recommends · YouTube ↗
      Emphasizes the importance of having enough copper before trying advanced longevity strategies like peptides.
    • 1 Sep 2026 · recommends · YouTube ↗
      Suggests that zinc has better safety and protective data than meds for reducing cardio respiratory risk.
    • 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.
  • Siim Land · Zinc · recommends
    • 5 Aug 2026 · recommends · YouTube ↗
      States that deficiencies in nutrients such as zinc can impair normal immune regulation.
    • 25 Oct 2026 · Magnesium · recommends · Instagram ↗
      States that Magnesium can be a useful addition for some people for sleep.
    • 14 Oct 2026 · Copper · neutral · Instagram ↗
      Mentions that copper 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.
    • 8 Oct 2026 · Boron · neutral · Instagram ↗
      Boron is a mineral that helps with bone density and vitamin D utilization, and also helps to increase free testosterone by reducing SHBG.
    • 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.
    • 3 Oct 2026 · Boron · neutral · Instagram ↗
      States that boron is a superstar when it comes to hormone and bone optimization.
    • 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.
    • 6 Sep 2026 · Magnesium · recommends · Instagram ↗
      Thinks magnesium has some of the strongest evidence and is worth considering.
    • 18 Aug 2026 · Boron · neutral · X ↗
      Notes that prunes are the highest food source of boron.
    • 17 Aug 2026 · Magnesium · recommends · YouTube ↗
      Recommends taking magnesium, specifically glycinate and threonate forms, 1 to 2 hours before bed for sleep benefits, noting that glycinate promotes relaxation and threonate crosses the blood-brain barrier for sleep quality and cognitive function.
    • 14 Aug 2026 · Magnesium · neutral · X ↗
      Notes that Boron reduces calcium/magnesium loss.
  • Bryan Johnson · Zinc · uses
    • 4 May 2026 · uses · X ↗
      Takes 15 mg of Zinc in the morning for longevity.
    • 22 Oct 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 15 Aug 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 4 May 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 4 May 2026 · Boron · uses · X ↗
      Takes 2 mg of Boron in the morning for longevity.
    • 2 May 2026 · Magnesium · uses · X ↗
      He takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 21 Apr 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 15 Apr 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 14 Apr 2026 · uses · X ↗
      Takes 15 mg of Zinc in the morning.
    • 14 Apr 2026 · Magnesium · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 14 Apr 2026 · Boron · uses · X ↗
      Takes 6 mg of Boron in the morning.
    • 8 Apr 2026 · Magnesium · uses · X ↗
      Takes 400 mg of magnesium L-threonate before bed for sleep.
    • 7 Apr 2026 · Magnesium · uses · X ↗
      He takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 5 Apr 2026 · Magnesium · uses · X ↗
      Takes 400 mg of magnesium threonate before bed for sleep.
  • Peter Attia · Zinc · recommends
    • 4 Jan 2026 · recommends · YouTube ↗
      Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
    • 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.
    • 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.
    • 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 Sep 2024 · neutral · YouTube ↗
      Discusses the AREDS formula, which initially included C and beta-carotene with zinc and copper, and later replaced beta-carotene with lutein and zeaxanthin, showing it could delay or reduce the conversion of mild to severe macular degeneration.
    • 6 Sep 2024 · Copper · neutral · YouTube ↗
      Discusses the AREDS formula, which initially included C and beta-carotene with zinc and copper, and later replaced beta-carotene with lutein and zeaxanthin, showing it could delay or reduce the conversion of mild to severe macular degeneration.
    • 7 Jul 2024 · Magnesium · recommends · YouTube ↗
      Takes a hardline view that most people do not have adequate or optimal levels of magnesium, and suboptimal levels will impede the metabolism of vitamin D because magnesium is a cofactor in its enzymatic conversion.
    • 1 Jul 2024 · Magnesium · uses · YouTube ↗
      Takes a hardline view that most people do not have adequate or optimal levels of magnesium, and suboptimal levels will impede vitamin D metabolism because magnesium is a co-factor in the enzymatic conversion of vitamin D.
    • 20 May 2024 · Magnesium · uses · YouTube ↗
      Takes magnesium as a straightforward supplement.
    • 28 Feb 2024 · Magnesium · neutral · YouTube ↗
      Mentions that magnesium intake is often super low and impactful on testosterone levels.
    • 11 Dec 2023 · Magnesium · uses · Facebook ↗
      Discusses the important roles of magnesium in the body, how to determine if one might be deficient, the prevalence of magnesium deficiency, and its potential cognitive benefits.
    • 28 Aug 2023 · recommends · YouTube ↗
      Explains that for Wilson's syndrome, which can lead to liver failure, the treatment given to children is zinc, which is inexpensive and effective in outcompeting copper to prevent overload.

RAL Summary

Members OnlyTier 3 for Immune Health

The tier rests on chloride, a minor ingredient here, and on one study of inhaled salt mist for lung immunity that did not test chloride taken by mouth; the main ingredient, zinc, did not prevent colds but did shorten them. So it is graded Tier 3, lower than the rules alone gave.

Where the evidence disagrees: 17 of the 42 human studies found no effect.

More Details

Members OnlyBody systems · Combine with · Possible side effects

Body systems: Immune system, Respiratory system, Digestive system

Combine with: If using zinc for general or immune support, pair it with copper (about 1-2 mg) to prevent zinc-induced copper deficiency if taking it long term, and consider lowering the dose to 15-30 mg daily. Vitamin C and vitamin D complement zinc for immune support. For thyroid goals specifically, a formula providing selenium (100-200 mcg), iodine (only if not contraindicated, such as in Hashimoto's or Graves'), iron if ferritin is low, vitamin D, and L-tyrosine may be more suitable, and zinc is best taken at a moderate dose within such a stack. Take zinc with food, separate it from iron and calcium supplements, and have thyroid labs (TSH, free T3, free T4) checked and discuss with a clinician, especially if taking a med, since minerals can reduce its absorption and should be taken at least 4 hours apart.

Possible side effects: Studies found more mild side effects with zinc used for colds. Buyers report a strong bitter metallic taste and stomach upset or nausea when it is taken without food.

Supplement Facts

Magnesium 25 mg · Zinc 50 mg · Copper 2 mg
Supplement Facts
Serving Size 1.25 mL
Servings Per Container 48
Amount Per Serving% Daily Value
Magnesium25 mg
Zinc50 mg
Copper2 mg
Chloride55 mg
Ionic Trace Minerals Complex350 mg†
Sulfate40 mg†
Boron100 mcg†
† Daily Value not established.

Other ingredients: Water, Purified, Citric Acid, Potassium Benzoate.

Directions: Suggested Use: Shake well. Using the metered dropper, take 0.5-1.25 mL daily with juice/food to mask the concentrated mineral flavor. Due to the concentrated nature of this product, we recommend spreading the serving size throughout the day and taking it on a full stomach.

Barcode (UPC) 878941000195 · Label source: NIH label database · Report a label change

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Graded November 10, 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.