Jarrow Formulas Methyl B-12 Review

Jarrow Formulas Methyl B-12 Lemon - 1000mcg (2-Pack) is described on the page as a biologically active form of vitamin B12 that helps support cellular energy production, sleep, and brain health. The product is a chewable tablet, and each lemon and other natural flavored tablet delivers 1000 mcg of vitamin B12 as methylcobalamin. The page states that Jarrow Methyl B-12 supports brain and nerve health, cellular energy production, healthy cell replication, and red blood cell production. It also says that methyl B12 is required for the normal metabolism of homocysteine, supporting its conversion to methionine. Research is cited suggesting that methyl B-12 is better retained in the body than cyanocobalamin, and the page notes that supplementation may be needed by some vegetarians and vegans. Clinical studies are described as showing that methyl B12 supplementation can be useful for vitamin B12 deficient people. The suggested use is one chewable tablet once a day or as directed by a qualified healthcare professional. The Supplement Facts panel lists a serving size of one tablet, with vitamin B12 as methylcobalamin at 1,000 mcg, shown as 41,667% Daily Value. The other ingredients are xylitol, microcrystalline cellulose, stearic acid from a vegetable source, natural flavor, magnesium stearate from a vegetable source, citric acid and silicon dioxide. The page states the formula does not contain wheat, gluten, soybeans, dairy, egg, fish, shellfish, peanuts, tree nuts or sesame. Key ingredient labels on the page are non-GMO, vegan and gluten free. The page includes a warning to consult a healthcare professional before use if pregnant, nursing, under 18, taking medication or having a medical condition, and to discontinue use if adverse reactions occur. It also says to keep out of reach of children and to store in a cool, dry place. A note says the color of the product naturally varies in different shades of pink. The listing is a 2-pack of 100 chewable tablets per bottle, described as a 3 month supply, at a price of $25.98, with a subscription option at a 15 percent discount. The page also carries a general statement from Jarrow Formulas, founded in 1977, about formulating with published science and using methylated B12 and folate rather than synthetic forms. The statements have not been evaluated by the Food and Drug Administration, and the product is not intended to diagnose, treat, cure, or prevent any disease.

Product Focus: EnergyAlso covers:Brain
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$4

Study, Trial or Testing Result Summary

MembersHuman studies

4 of these 19 human studies gave vitamin b12 by injection, not by mouth.

This product gives 1000 mcg of vitamin B12 as methylcobalamin, which is a dose. For energy, the studies are thin and of B12 alone. …

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Review Totals and Summary

Members121 reviews
121 reviews · Walmart 111 · Jarrow Formulas website 10

Customers generally have a very view of Jarrow Formulas Methyl B-12 chews, which have received approximately 121 ratings across various stores. star ratings from the provided reviews are 4 or 5 stars, indicating with the product. **What it did for them** The frequently is a noticeable in energy. …

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Biohacker Summary

MembersWhat our biohacker panel says

They mainly take it for nerve and myelin, brain function, mood, energy, and to homocysteine, and say to get tested and supplement if deficient, especially for vegans and vegetarians. The form named often is methylcobalamin, with one panelist favoring a liposomal and micellar version, one suggesting a sublingual form or injections for older people, and doses were rarely given beyond one panelist taking 1 gram each morning. …

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RAL Summary

MembersThe tier and why

The grade rests on trials of multi-ingredient mixes, B12 doses, or injections, and on a review that could analyze fatigue, so the evidence is thin rather than a showing that 1000 mcg of oral methylcobalamin does for energy. …

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Nervous system, Blood. Combine with and possible side are for members.

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Supplement Facts

Vitamin B₁₂ 1000 mcg
Supplement Facts
Serving Size 1 Tablet
Amount Per Serving% Daily Value
Vitamin B₁₂ (as Methylcobalamin)1,000 mcg41,667%

Other ingredients: Xylitol, microcrystalline cellulose, stearic acid (vegetable source), natural flavor, magnesium stearate (vegetable source), citric acid and silicon dioxide.

Directions: Adults take 1 chewable tablet once a day or as directed by your qualified healthcare professional.

Label source: Jarrow · Report a label change

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Our articles on this subject

Graded October 26, 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.