Buy Vitamin B12 (test-gated)

Products that match the form and dose used in the studies. Umbral earns a commission on some purchases; the order never changes because of it.

Moderate
500–1,000 µg/day if low
Ratings, prices and photos were read from Amazon on Sep 18, 2026. Amazon prices change; the current one is on the product page.

As an Amazon Associate, Umbral earns from qualifying purchases. Product data is provided by Amazon and may change; ratings and prices shown are Amazon’s, not Umbral’s. Recommendations are based on the evidence grade and the form used in trials, never on commission.

Pure Encapsulations Methylcobalamin 1,000 mcg, 60 capsules
Pure Encapsulations Methylcobalamin 1,000 mcg, 60 capsules
4.8(3,408)
$20.50

Once low is confirmed; sublingual or capsule both work.

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Amazon price on Sep 18, 2026.
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What to look for
  • ✓Methylcobalamin or cyanocobalamin 500–1,000 µg
What to avoid
  • ✕Supplementing without a serum B12 test
Safety notes
  • ⚑ Serum B12 (± MMA)
  • · Extremely safe.

As an Amazon Associate, Umbral earns from qualifying purchases. Product data comes from Amazon and may change; ratings and prices are Amazon's, not Umbral's. Suggestions are based on the science and the form used in studies, never on commission.

Umbral is a wellness product, not a medical device. It does not diagnose, treat, cure or prevent any disease. Supplement information is educational; talk to a clinician before starting anything, especially if you are pregnant, under 18, managing a condition or taking medication.

These statements have not been evaluated by the Food and Drug Administration.