bloom nutrition , Greens & Superfoods, Citrus, (165 g) Review

Bloom Nutrition Greens & Superfoods in Citrus flavor is sold as a 5.82 oz (165 g) container on this Vitacost product page. The product is presented as a greens supplement and is labeled as a dietary supplement. The page highlights several claims at the top of the description. It describes the product as the #1 Greens Brand in the USA, with a footnote stating that this claim is based on SPINS annual sales data in the U.S. The listed benefit areas are digestion, bloating, and energy, and the bloating, energy, and digestion statements carry a footnote explaining that greens help aid digestion, relieve occasional bloating, and promote cellular energy. The label-style claims state that the product is dairy free, non GMO, gluten free, and manufactured in a cGMP facility. The brand's co-founder, Mari Llewellyn, is quoted with the message that the goal is to help customers bloom into their best selves. The page explains that Bloom Nutrition's Greens are made with more than 30 good-for-you ingredients, including fruits and vegetables, pre and probiotics, digestive enzymes, and more. The supplement facts panel lists a serving size of one scoop, which is 5.5 g, with 30 servings per container. Each serving provides 15 calories, 3 g of total carbohydrate, 2 g of dietary fiber, 3.6 mcg of vitamin B12 as methylcobalamin at 150% of the daily value, 0.5 mg of iron, and 8 mg of sodium. The label also lists proprietary blends. The fiber blend contains chicory root fructo-oligosaccharides, organic flaxseed, and apple fruit powder, totaling 1.606 g. The green superfood blend contains organic barley grass, spirulina, wheat grass, alfalfa leaf, and chlorella powders, totaling 1.367 g. The pre and probiotic blend contains blue agave inulin, Bacillus coagulans, Bifidobacterium bifidum, Lactobacillus rhamnosus, and Lactobacillus acidophilus, totaling 792 mg and providing 2.5 billion CFU. The fruit and vegetable blend includes carrot, beet root, kale, blueberry, spinach, broccoli, and ginger root extract, totaling 572 mg. The antioxidant beauty blend includes cranberry, strawberry, raspberry, tart cherry, elderberry, acai, goji berry, moringa, grape seed extract, and matcha green tea leaf, totaling 550 mg. The adaptogenic blend includes licorice root, rhodiola root, American ginseng root, ashwagandha root, astragalus root, and eleuthero root, totaling 100 mg. The digestive enzyme blend includes amylase, amyloglucosidase, protease, acid protease, cellulase, and lipase, totaling 25 mg. Daily values are based on a 2000 calorie diet, and the page notes that the daily value is not established for the blends. The suggested use is to add one scoop to 8 to 12 fl oz of water, juice, or another favorite beverage daily. The warnings advise storing the product in a cool, dry place, keeping it out of reach of children, and consulting a health care provider before taking any new supplement if the buyer has medical conditions, takes meds, is pregnant, or is lactating. The page also lists Prop 65 information. The page gives an expiration date of 02/01/2027 and a best by date of 04/01/2027. The UPC printed on the page is 051497173036. The listed price is $39.99, and the page indicates the product is sold with a maximum order of 12 per customer.

Product Focus: Digestion and BloatingRanked among:Greens powders
Tier ⓘ
Tier 3 · Rank 14
Tier 3 · Reviewed. Strong review agreement, with limited or early support from human studies. Rank 14 within Tier 3 for Digestion and Bloating; 28 of 45 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
72 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
81% of 20,578
Biohacker Mentions
10 of 10
Cost per month
$120 at 3 servings

Study, Trial or Testing Result Summary

Members Only81 human studies · 51 improved
81 human studies51 improved17 no effect18,085 people studied

The strongest support comes from the pre and probiotic blend. A large trial found a daily multi-strain probiotic and prebiotic mix eased bloating, gas, discomfort and constipation more than placebo [1], another trial in irritable bowel syndrome found 70% reported adequate relief [2], and a pooled review found probiotics beat placebo [3]. Results are not uniform: another review found prebiotic and probiotic combinations did not clearly help [4]. The exact strain amounts here are hidden in the blend. Spirulina helped bowel symptoms at 1 gram a day in one trial [5], but here it shares a 1.367 gram blend with four other greens, so it is likely below that dose. The fruit and vegetable blend was never tested itself; the ginger studies used different herbal mixes [6][7]. The digestive enzymes are a trace amount, far below the 400 milligrams that helped in a trial [8]. Vitamin B12 and iron at these small amounts have no shown digestive benefit [9][10]. Animal and cell studies are never counted.

See all 81 studies →Hide the studies

Review Totals and Summary

Members Only20,578 reviews · 81% positive
20,578 reviews · Google 20,502 · IHerb 61 · Vitacost 15
81% positive9% neutral10% negative

Across the two stores this powder shows 76 ratings in total (15 on Vitacost and 61 on iHerb), and the themes below come from the written reviews that could be read on their pages, which amount to about five on Vitacost and a similar handful on iHerb. The Vitacost reviews were originally posted on iHerb and shown through a review widget. Only reviews of the powder are covered here, and no reviews of other forms were used. The most common praise is for digestive and bloating benefits. One buyer says it helped with debloating, another saw great benefits for a bloating problem, and an iHerb reviewer says it made a large difference to bloating and calls it a favourite superfood. Another iHerb reviewer noticed an improvement in their gut environment after daily use and was on a second order. A reviewer in their 30s says it improved their skin and suits their diet, and describes it as rich in antioxidants. Antioxidants and the general nutritional value of adding greens to a daily diet are mentioned by iHerb reviewers too. Quality and ingredients also draw approval. Reviewers call it a high quality superfood with good ingredients, a trusted brand, and a suitable dose. One calls it the best choice for maintaining health. Good packaging is mentioned as well. A repeat buyer who has tried many greens brands says Bloom tastes great, delivers what is advertised, and is worth buying again. Ease of use is another positive. Several people call it an easy superfood that mixes easily. One iHerb reviewer mixes it into yogurt, finding the flavour pleasant with a faint citrus note and a vegetable undertone. Another drank it mixed into prune juice. Taste is the most divided topic. Some reviewers say it tastes really good and call it a love-it product. Others are lukewarm: one says the taste was not as enjoyable as expected but was still drinkable in prune juice, and another simply calls it acceptable. The harshest comment says they did not understand the hype, found the flavour too sweet in an unpleasant way, and gave a below-average rating, also doubting the marketing claims. Value draws a little criticism. One iHerb buyer says paying full retail price seems expensive, although they were impressed by iHerb's delivery speed. Overall, the product seems to suit people who want a simple daily greens powder for digestion, bloating, skin or general nutrition and who value a trusted brand with sound ingredients. It may suit less well anyone sensitive to sweetness, anyone expecting an enjoyable flavour on its own, or anyone who is price-conscious. Mixing it into yogurt or juice is how reviewers made the taste work. The balance of the written comments is positive, with the main reservations being sweetness, an ordinary taste for some, and price.

Biohacker Summary

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

The panel has no statements about a main ingredient in this greens powder, so the discussion centers on two smaller ingredients, iron and vitamin B12, and iron drew far more comment. Iron got a mixed but mostly supportive response: about half the panel recommend making sure levels are adequate, citing thyroid function, brain health, muscle and recovery, and for women of reproductive age who are low, while one person takes 10 milligrams of heme iron and another noticed less soreness after starting a supplement. Several urge caution, saying iron should not be taken aggressively without testing, that excess may drive inflammation and cell aging, and that one person does not recommend iron supplements at all, preferring red meat or liver; one panelist stopped after years of trying every form without raising his levels. Vitamin B12 is a smaller ingredient in this product, and those who spoke on it mostly advise testing and supplementing only if low, with one preferring a liposomal methylcobalamin form and another warning not to take it too close to bedtime.

See all 10 biohackers →Hide the biohackers
  • Dr. Eric Berg · Vitamin B12 · neutral
    • 8 Nov 2026 · neutral · Facebook ↗
      Mentions that one can of sardines provides 348% of the daily Vitamin B12.
    • 7 Nov 2026 · neutral · Instagram ↗
      Dr. Berg states that when nutrients like vitamin B12 are too low, fatigue and weakness can follow.
    • 7 Nov 2026 · Iron · warns · Facebook ↗
      Warns against iron supplements, suggesting instead to get iron from red meat or liver.
    • 7 Nov 2026 · Iron · neutral · Instagram ↗
      Dr. Berg states that when nutrients like iron are too low, fatigue and weakness can follow.
    • 4 Nov 2026 · Iron · warns · YouTube ↗
      Does not recommend taking iron supplements or cooking in iron skillets because the body has no mechanism of getting rid of iron unless one donates blood or is a menstruating female.
    • 30 Oct 2026 · Iron · neutral · YouTube ↗
      Identifies iron as the Achilles' heel of cancer, as it is needed for its DNA to replicate.
    • 18 Oct 2026 · Iron · neutral · YouTube ↗
      Mentions that grass-fed liver has heme iron, the most bioavailable form of iron that prevents anemia.
    • 10 Oct 2026 · Iron · warns · Podcast ↗
      Dr. Berg warns that too much iron can be damaging to the body and advises focusing on food sources to avoid overconsumption.
    • 4 Oct 2026 · recommends · Facebook ↗
      Recommends taking the natural form of vitamin B12, methylcobalamin, to support nerve regeneration, myelin production, and nerve growth factors.
    • 4 Oct 2026 · neutral · X ↗
      Notes that Vitamin B12 is intimately involved in the nervous system and may be behind sciatica and carpal tunnel syndrome.
    • 3 Oct 2026 · Iron · warns · YouTube ↗
      Warns that too much iron, especially the ferrous sulfate or fumarate type found in many supplements, is corrosive and oxidizing, can mess with the liver, and create inflammation, noting that males have no natural way to excrete excess iron.
    • 27 Sep 2026 · Iron · neutral · X ↗
      Notes that tannins in tea bind iron, blocking its absorption.
    • 20 Sep 2026 · recommends · Facebook ↗
      Recommends taking vitamin B12 if on a med.
    • 15 Sep 2026 · neutral · Podcast ↗
      Briefly mentions Vitamin B12 in relation to neuropathy.
  • Thomas DeLauer · Iron · recommends
    • 2 Nov 2026 · recommends · YouTube ↗
      Recommends giving any iron intervention a couple of months before deciding if it works, and suggests increasing heme iron through red meat or liver intake.
    • 18 Oct 2026 · Vitamin B12 · recommends · YouTube ↗
      Recommends Vitamin B12 for mental health and mood, explaining its role in myelination and neurotransmitter production. They specifically recommend a liposomal and micellar form of methylcobalamin B12 for better absorption and to avoid toxicity.
    • 18 Sep 2026 · neutral · Facebook ↗
      Compares iron content in spinach (2.7mg) and beef (2.6mg), but emphasizes that beef's heme iron absorbs at about 25%, while spinach's non-heme iron absorbs at 2-8%.
    • 24 Aug 2026 · recommends · YouTube ↗
      Recommends iron from meat, specifically red meat and beef liver, stating that it is a crucial part of the mechanistic triad for thyroid hormone function and is iron-dependent for iodine incorporation into thyroid hormone.
    • 30 Jun 2026 · Vitamin B12 · neutral · YouTube ↗
      Mentions that a single serving of sardines provides vitamin B12 at something like three to four times the daily needs.
    • 29 Jun 2026 · Vitamin B12 · recommends · YouTube ↗
      Recommends taking methylcobalamin as a methylated form of B vitamin for mitochondrial function.
    • 6 Jun 2026 · neutral · YouTube ↗
      Notes that iron is essential for delivering oxygen to muscles and the brain, making it an important cofactor for signals to reach their targets.
    • 4 Jun 2026 · recommends · YouTube ↗
      Recommends assessing iron along with selenium and iodine for optimal thyroid function, suggesting red meat as a source of iron.
    • 30 May 2026 · recommends · YouTube ↗
      Recommends getting heme iron from real food sources like organ meats, red meats, or pumpkin seeds, and warns against iron supplements due to potential oxidation and issues with copper levels.
    • 1 Apr 2026 · warns · YouTube ↗
      Warns against overdoing iron supplementation unless truly needed, especially if ferritin levels are high, as ferroptosis is iron-dependent and excess iron can increase ferroptotic risk.
    • 8 Mar 2026 · recommends · YouTube ↗
      Recommends good quality heme iron from food sources like liver and beef for preventing insulin resistance and type 2 diabetes, supporting glucose control, and energy regulation, but warns against iron supplements.
    • 25 Feb 2026 · neutral · YouTube ↗
      States that iron status is critical for white matter development and maintenance, noting that anemic individuals tend to have a loss of white matter structure, which is common in women during perimenopausal transition.
    • 11 Dec 2025 · Vitamin B12 · warns · YouTube ↗
      Advises against taking vitamin B12 if one's diet already provides enough, suggesting a B complex or liver capsule instead for B vitamins.
    • 18 Nov 2025 · warns · YouTube ↗
      Warns that polyphenols in coffee can bind to iron, making it useless. He recommends taking iron supplements upon waking on an empty stomach, potentially with vitamin C, and waiting 30-60 minutes before consuming coffee or tea.
  • Dr. Mark Hyman · Iron · neutral
    • 29 Oct 2026 · neutral · YouTube ↗
      States that iron helps red blood cells carry oxygen, and a deficiency can make one feel like they are running on low power mode.
    • 21 Oct 2026 · neutral · YouTube ↗
      Mentions iron as an existing biomarker that plays a role in mental health, which Function Health includes in their measurements.
    • 31 Aug 2026 · neutral · YouTube ↗
      Notes that a woman patient had very low iron.
    • 20 Aug 2026 · recommends · YouTube ↗
      States that they get the whole picture when it comes to iron, looking at ferritin, iron reserves, iron in the blood, iron saturation, and iron binding capacity to spot problems before full-blown anemia.
    • 22 Jul 2026 · Vitamin B12 · recommends · YouTube ↗
      States that vitamin B12 is a nutritional deficiency that impacts mental health.
    • 29 Jun 2026 · Vitamin B12 · recommends · Facebook ↗
      Recommends vitamin B12 with vitamin B6 and folate as supplements with strong evidence for PMS.
    • 10 Jun 2026 · neutral · YouTube ↗
      Mentions iron as an example of a common nutritional deficiency.
    • 3 Jun 2026 · neutral · YouTube ↗
      Notes that many Americans are deficient in iron, which affects mood and brain function.
    • 3 Jun 2026 · Vitamin B12 · recommends · YouTube ↗
      Mentions that repletion of vitamin B12 can help safely withdraw someone from meds and that simple vitamin B12 deficiencies are important to address in a depression workup.
    • 18 May 2026 · recommends · Instagram ↗
      Recommends testing Iron as a biomarker before training for fitness.
    • 24 Apr 2026 · neutral · YouTube ↗
      States that low iron, specifically a ferritin level less than 45, is a big hidden cause of insomnia, affecting up to half the population.
    • 18 Apr 2026 · Vitamin B12 · neutral · Facebook ↗
      Lists Vitamin B12 as important for nerve health and energy.
    • 24 Sep 2025 · uses · YouTube ↗
      Mentions that they check iron levels as part of evaluating mental illness biomarkers.
    • 30 Jul 2025 · recommends · YouTube ↗
      Recommends carefully looking at iron, thyroid, and cortisol levels as they all play a role in affecting cognitive function and mental health.
  • Siim Land · Iron · neutral
    • 14 Oct 2026 · neutral · Instagram ↗
      Mentions that iron is a mineral necessary for making collagen.
    • 3 Sep 2026 · warns · YouTube ↗
      States that excess iron promotes oxidative stress and inflammation, which increases heart disease risk.
    • 24 Apr 2026 · Vitamin B12 · uses · YouTube ↗
      Created Microvitamin, a supplement that bundled all the supplements he was taking, to help fund his a med trial.
    • 24 Mar 2026 · neutral · YouTube ↗
      Notes that iron deficiency is found in children with premature graying of hair and that some people get gray hair due to iron deficiency.
    • 24 Mar 2026 · Vitamin B12 · recommends · YouTube ↗
      States that vitamin B12 deficiency is the most common reason for premature graying of hair and recommends fixing B12 status if it is deficient, as it gives a greater likelihood of reversing gray hair.
    • 8 Feb 2026 · recommends · YouTube ↗
      Recommends ensuring sufficient iron intake, especially during pregnancy and early life, to prevent mental developmental and cognitive issues.
    • 5 Jan 2026 · neutral · YouTube ↗
      States his iron level is 103 micrograms per deciliter, which he considers a good result, and advises that men should aim for lower iron levels to reduce the risk of heart disease and aging.
    • 28 Dec 2025 · warns · YouTube ↗
      Places iron in the 'junk tier', warning that high iron levels are associated with heart disease, mortality, and liver disease, and advises caution with supplementation, especially for men with high iron.
    • 3 Dec 2025 · warns · YouTube ↗
      Warns that high iron levels are associated with increased risk of mortality and reduced lifespan, and that iron in excess is bad for maximum longevity. He states that iron levels slightly on the lower end, around 60 to 90 micrograms per deciliter, are associated with the lowest mortality risk, and that iron below 45 and above 145 micrograms per deciliter is associated with increased risk of mortality.
    • 20 Sep 2025 · warns · YouTube ↗
      Warns that very high iron levels can cause damage to the endothelium and increase the risk of heart disease, especially in men who accumulate iron more easily.
    • 8 Sep 2025 · warns · TikTok ↗
      Warns that too much iron can damage blood vessels, though people with low iron status are safe.
    • 23 Aug 2025 · warns · YouTube ↗
      Theorizes that Brian's lower iron status and hemoglobin status, possibly due to his plant-based diet and lack of iron supplementation, limits his V2 max.
    • 18 Jun 2023 · Vitamin B12 · uses · Podcast ↗
      Takes 1 gram of Vitamin B12 from DoNotAge in the morning for longevity.
    • 4 May 2023 · Vitamin B12 · neutral · YouTube ↗
      Mentions Vitamin B12 as a key nutrient involved in the methylation cycle that helps prevent methionine from raising homocysteine levels.
  • Andrew Huberman · Iron · recommends
    • 20 Jul 2026 · recommends · YouTube ↗
      States that Iron is one of the critical nutrients with the best evidence for cognitive function and reducing the risk of dementia.
    • 15 Dec 2025 · Vitamin B12 · neutral · YouTube ↗
      States that a deficiency in vitamin B12 can be terrible and lead to chronic fatigue-like syndromes, as many parts of mitochondria require B vitamins.
    • 30 Oct 2025 · warns · YouTube ↗
      Warns that excess iron will increase the number of senescent cells in the body, which accumulate as people get older and cause inflammation and cancer. He notes that people who are healthy and have a fairly vegetarian diet often have slightly low iron levels but super amounts of energy.
    • 14 Apr 2025 · neutral · YouTube ↗
      Notes that about 50% of the population is iron deficient.
    • 31 Mar 2025 · neutral · Instagram ↗
      Mentions that the podcast will review the role of iron in treating depression.
    • 31 Mar 2025 · warns · YouTube ↗
      States that B12, folate, and iron are essential to mitochondrial function and if deficient, mitochondria will not function properly, which is consistent with the mitochondrial theory of neuropsychiatric disorders.
    • 7 Oct 2024 · Vitamin B12 · recommends · YouTube ↗
      Recommends taking methyl B12 as part of methylated B vitamins to lower homocysteine levels and reduce cardiovascular risk.
    • 29 Jul 2024 · Vitamin B12 · uses · YouTube ↗
      Has been taking AG1 for over 10 years, once and often twice every day, to ensure he gets all necessary vitamins, minerals, probiotics, and adaptogens, considering it a nutritional insurance policy.
    • 22 Jul 2024 · recommends · YouTube ↗
      Advises women concerned with low ferritin to take an iron supplement every other day for 10 days, starting on the first day of their bleed, to maximize absorption.
    • 24 Apr 2024 · Vitamin B12 · recommends · YouTube ↗
      Has been taking AG1 since 2012 to ensure he gets enough vitamins, minerals, Prebiotic fiber, and other nutrients typically found in fruits and vegetables, providing nutritional insurance.
    • 23 Oct 2023 · Vitamin B12 · uses · YouTube ↗
      Andrew Huberman started drinking AG1 in 2012 and still drinks it once or twice a day because it provides all his foundational nutritional needs, ensuring proper amounts of vitamins, minerals, probiotics, and fiber for optimal mental health, physical health, and performance.
    • 10 Apr 2023 · neutral · Podcast ↗
      Discusses the role of iron in hair growth.
    • 22 Aug 2022 · Vitamin B12 · recommends · YouTube ↗
      Recommends the consumption of B12 and other B vitamins, especially folate, as it has been shown to partially decrease cancer risk in people who ingest alcohol, though it does not completely offset it.
    • 18 Apr 2022 · Vitamin B12 · uses · YouTube ↗
      Started taking AG1 in 2012 and still takes it once or twice a day because it covers foundational vitamin, mineral, and probiotic needs, and supports immune system function and a healthy gut microbiome.
  • Ben Greenfield · Iron · recommends
    • 9 Jul 2026 · recommends · YouTube ↗
      Recommends testing for and replenishing iron if levels are low, as it can affect the ability to maintain or preserve muscle, especially for those on GLP-1s.
    • 9 Jul 2026 · Vitamin B12 · recommends · YouTube ↗
      Recommends getting vitamin B12 tested and supplementing if deficient, as B12 deficiency can cause damage to the myelin coating around nerves, including cochlear nerves, and improve tinnitus severity scores.
    • 29 May 2026 · neutral · Facebook ↗
      Notes that one can eat iron-rich foods or supplement with iron, but still feel exhausted if iron is not the missing piece, emphasizing that focusing on a single mineral in isolation can support a number on a lab test rather than the system itself.
    • 6 May 2026 · neutral · X ↗
      Mentions iron as a common deficiency.
    • 16 Apr 2026 · recommends · YouTube ↗
      Recommends a nutritious diet including iron, as it is critical for brain development.
    • 7 Jan 2026 · recommends · YouTube ↗
      Notes that the guidelines mention iron supplementation for infancy and early childhood.
    • 26 Nov 2025 · uses · Facebook ↗
      Started thinking about getting more heme-based iron in his diet after a podcast about reasons people feel fatigue.
    • 22 Nov 2025 · stopped · YouTube ↗
      Warns that modern society has flipped the narrative on iron intake, leading people to consume excessive amounts (20-50 mg) through an iron-fortified diet, which the body cannot assimilate, leading to storage in tissues and disrupting iron physiology, contributing to aging.
    • 19 Apr 2025 · recommends · YouTube ↗
      Notes that some people need to supplement with iron, recommending iron biscinate as a form that doesn't irritate the gut.
    • 3 Apr 2025 · warns · YouTube ↗
      Explains that 10X can pinpoint genetic variations that predispose some people to absorbing too much iron and will adjust the iron content in their supplement, potentially reducing or removing it entirely.
    • 26 Dec 2024 · neutral · TikTok ↗
      Covers iron as a key supplement for kids.
    • 26 Dec 2024 · Vitamin B12 · recommends · YouTube ↗
      He recommends Vitamin B12, especially for kids on a vegan or vegetarian diet, as it is essential for nervous system development.
    • 29 Aug 2024 · Vitamin B12 · neutral · YouTube ↗
      Mentions that blood testing for an energy crisis would include nutritional things like a vitamin B12 level.
    • 4 Jul 2024 · Vitamin B12 · uses · YouTube ↗
      Ben Greenfield consumes vitamin B12 as part of the Update Energy Drink.
  • Bryan Johnson · Iron · stopped
    • 8 Jul 2026 · 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 · uses · X ↗
      Had low iron for 11 years, with ferritin averaging 38 ng/mL, and has finally boosted it back to healthy levels.
    • 5 Jun 2025 · Vitamin B12 · uses · YouTube ↗
      States that Blueprint essential capsules and soft gels are packed with key vitamins and minerals needed for strong bone health.
    • 26 Sep 2023 · uses · YouTube ↗
      Takes 10 milligrams of heme iron to get his iron levels up, as they are borderline.
    • Date not recorded · recommends · Website ↗
      Recommends adequate Iron for hair health, noting it is in the Blueprint stack.
    • Date not recorded · recommends · Source ↗
      Recommends supplementing with iron for brain health for both the mother and the baby during pregnancy.
  • Dave Asprey · Vitamin B12 · recommends
    • 1 Jul 2026 · recommends · YouTube ↗
      States that Vitamin B12 is extremely important for every kind of brain function and recommends ensuring B12 levels are optimal, around 500, not just barely above normal.
    • 24 Jun 2026 · Iron · warns · X ↗
      Warns that if a doctor diagnoses anemia, one should not assume they just need more iron, as low hemoglobin doesn't always mean low iron and the issue can sometimes be how well the body is using iron.
    • 16 Jun 2026 · Iron · neutral · Facebook ↗
      Notes that when energy intake is too low for training demand, nutrient intake often falls short, especially for iron, which is associated with impaired recovery.
    • 19 Mar 2026 · Iron · recommends · YouTube ↗
      Recommends ensuring iron levels are good as it is a cofactor that can help thyroid function, especially with conversion issues.
    • 9 Oct 2025 · recommends · YouTube ↗
      Recommends taking vitamin B12 if one has a deficiency.
    • 15 Aug 2025 · Iron · recommends · YouTube ↗
      Egg yolks, particularly raw egg yolks, fatty cuts of meat, choline sources like that, making sure there's enough iron and a lot of the micro minerals, trace minerals, things like that. Those would be really important for bone marrow because mineral deficiencies are going to block that at the start.
    • 8 May 2025 · Iron · warns · YouTube ↗
      Warns that both too much and not enough iron can trash the body, highlighting the complex interactions between iron and copper.
    • 11 Apr 2025 · Iron · neutral · YouTube ↗
      States that iron really helps in maintaining hair growth.
    • 29 Mar 2025 · Iron · warns · YouTube ↗
      States that many vegans don't get enough iron, which slows metabolism and makes it harder to build muscle.
    • 4 Aug 2024 · Iron · warns · YouTube ↗
      Warns that low iron in women leading up to and through the first 30 weeks of pregnancy can result in the baby having a lower IQ and being more likely to have ADHD and demyelination issues.
    • 2 Aug 2024 · Iron · recommends · YouTube ↗
      Advises taking iron and calcium separately because they will bind together.
    • 1 Aug 2024 · Iron · recommends · YouTube ↗
      Advises getting iron levels up through diet and supplementation, and to take iron and calcium separately because they will bind together.
    • 1 Feb 2024 · neutral · YouTube ↗
      Dave Asprey notes that it's almost impossible to get vitamin B12 in a vegan diet, and it's primarily found in animal meat.
    • 21 Jul 2021 · neutral · YouTube ↗
      Clarifies that Vitamin B12 is completely different from Vitamin B3 and is involved in different pathways, so there is no overlap with NAD pathways.
  • Dr. Rhonda Patrick · Iron · uses
    • 4 May 2026 · uses · YouTube ↗
      Recently found out he needed to get on an iron supplement and noticed he gets less sore in his training after taking it.
    • 22 Jan 2026 · recommends · YouTube ↗
      Advises that menstruating women should ensure they are getting enough iron.
    • 8 Oct 2025 · Vitamin B12 · warns · Facebook ↗
      Warns that Vitamin B12 enhances light's melatonin-suppressing effects and should be avoided too close to bedtime.
    • 28 Apr 2025 · warns · YouTube ↗
      Warns that iron is not an innocuous supplement and should not be taken aggressively without proper testing, as it can be complicated and has significant downsides if levels are not understood.
    • 25 Aug 2020 · recommends · YouTube ↗
      Dr. Patrick explains that breast milk is incredibly low in iron, and by six months, infants can develop iron deficiency anemia, so pediatricians recommend introducing iron-rich complementary foods at that time.
    • 5 Apr 2017 · warns · YouTube ↗
      Rhonda discusses Dr. Lithgow's work on how excess dietary iron affects protein homeostasis in worms, noting that increased iron levels in the diet accelerated aging and the accumulation of insoluble proteins.
    • 9 Apr 2016 · Vitamin B12 · recommends · YouTube ↗
      Notes that a med can cause vitamin B12 deficiency, especially as absorption decreases with age, and suggests a sublingual form or B12 injections for older individuals.
    • 23 Jan 2016 · Vitamin B12 · uses · YouTube ↗
      Discusses the origin of Vitamin B12, suggesting it's a microorganism that propagates in the soil and that animals get it from eating dirt, which is why it's less available in modern, sanitized plant foods.
    • 17 Feb 2014 · Vitamin B12 · recommends · YouTube ↗
      Describes a study where female mice fed a diet high in B vitamins, folic acid, and vitamin B12 three weeks before pregnancy had offspring that no longer had yellow fur and were not predisposed to obesity and cancer.
    • Date not recorded · uses · Website ↗
      Dr. Patrick takes some iron during menstruation.
    • Date not recorded · warns · Website ↗
      Increased iron levels in the brain worsen cognitive test performance by as much as 10% in older adults, a phenomenon linked to brain atrophy and decline in memory and attention.
    • Date not recorded · neutral · Website ↗
      Iron plays a central role in health across the lifespan. It forms the core of hemoglobin, the molecule in red blood cells...
    • Date not recorded · neutral · Website ↗
      The requirement for iron is 1.8 times higher for vegetarians.
    • Date not recorded · recommends · Website ↗
      The findings highlight the importance of proper nutrition during development and suggest that iron supplementation may be beneficial, especially during adolescence.
  • Peter Attia · Iron · recommends
    • 8 Jun 2025 · recommends · YouTube ↗
      Recommends iron supplements for women of reproductive age who are iron deficient.
    • 9 Sep 2024 · neutral · YouTube ↗
      Notes that deficiencies in certain vitamins and minerals, such as iron, can be a cause of hair loss in women.
    • 9 Sep 2024 · Vitamin B12 · neutral · YouTube ↗
      Notes that deficiencies in certain vitamins and minerals, such as B12, can be a cause of hair loss in women.
    • 8 Apr 2024 · neutral · X ↗
      Delves into the crucial yet often overlooked topic of iron and iron deficiency.
    • 8 Apr 2024 · neutral · YouTube ↗
      Explains that humans consume about 10 to 20 milligrams of iron per day, absorbing roughly 10% of that, which is 1 to 2 milligrams per day, perfectly offsetting the 1 to 2 milligrams lost daily.
    • 8 Apr 2024 · recommends · Podcast ↗
      Peter emphasizes the importance of consuming an adequate amount of iron daily to prevent deficiency.
    • 23 Jan 2020 · neutral · YouTube ↗
      Speculates that lower iron levels in women due to their menstrual cycle may offer a protective benefit against heart disease, citing data that metabolically deranged men benefit from therapeutic phlebotomy.
    • 31 Dec 2019 · Vitamin B12 · uses · YouTube ↗
      Explains that when a person is not responding to traditional B vitamins, they will step it up and give them methylcobalamin B12.
    • Date not recorded · Vitamin B12 · warns · Website ↗
      Notes that Ryan Lochte was suspended for a doping rule violation after a social media post showed him taking vitamin B12 in an illegal way, by IV infusion.

RAL Summary

Members OnlyTier 3 for Digestion and Bloating

The tier rests on the Fruit and Vegetable Blend, but its studies tested other herbal mixes (ginger with ajwain and black pepper, or with boswellia and yarrow), not this carrot, beet, kale and berry blend, where ginger is only a small hidden part. So it is graded Tier 3, lower than the rules alone gave.

Take 3 servings a day (3 scoops) to match the dose that worked in the studies.

Where the evidence disagrees: 17 of the 81 human studies found no effect.

More Details

Members OnlyBody systems · Combine with · Possible side effects

Body systems: Digestive system

Combine with: For blood sugar support, stack this with berberine (500 mg, 2-3 times daily with meals), chromium picolinate or polynicotinate (200-600 mcg), Ceylon cinnamon extract, and alpha-lipoic acid (300-600 mg). Magnesium glycinate or citrate helps insulin sensitivity, and soluble fiber such as psyllium or glucomannan blunts post-meal glucose spikes. Omega-3 fish oil and CoQ10 add cardiovascular support. Continue the greens powder for micronutrient, fiber, and gut-health benefits. Consult a healthcare provider before combining with meds, since berberine and similar agents can add to glucose-lowering effects.

Possible side effects: Probiotic products caused more stomach pain in people with inflammatory bowel disease, and ginger caused mild bloating or heartburn in some; reviewers mainly complained of overly sweet taste.

Supplement Facts

Vitamin B12 3.6 mcg · Iron 0.5 mg · Fiber Blend 1.606 g
Supplement Facts
Serving Size 1 Scoop (5.5g)
Servings Per Container 30
Amount Per Serving% Daily Value
Calories15
Total Carbohydrate3 g
Dietary Fiber2 g
Vitamin B123.6 mcg
Iron0.5 mg
Sodium8 mg
Fiber Blend1.606 g†
Green Superfood Blend1.367 g†
Pre and Probiotic Blend792 mg†
Fruit and Vegetable Blend572 mg†
Antioxidant Beauty Blend550 mg†
Adaptogenic Blend100 mg†
Digestive Enzyme Blend25 mg†
† Daily Value not established.

Other ingredients: Citric Acid, Natural Flavor, and Stevia Leaf Extract (Reb A).

Directions: Just add one scoop to 8-12 fl oz of water, juice, or your favorite beverage daily - it's that easy.

Barcode (UPC) 051497173036 · Label source: Reverseagelab · 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.