Is NOW Extra Strength Methyl B-12 10,000 mcg safe while breastfeeding?

Grade B. 4 Safe, 2 Caution, 0 Avoid. No major safety flags.

Clarity Product Analysis

NOW

Extra Strength Methyl B-12 10,000 mcg

Name: Extra Strength Methyl B-12 10,000 mcg
Brand: NOW

Minor cautions6 of 7 ingredients checked · 4 safe · 2 caution · 0 avoid

2 ingredient(s) rated Caution

6Checked

BGrade

4Safe

2Flagged

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Full ingredient analysis

Ingredient	Verdict	Evidence	Notes
Cellulose	Not in DB
Citric Acid	Safe	Gold	DAO: Low
Natural Flavors	Caution	Gold	Caution advised due to potential sensitivity.
Sorbitol	Safe	Gold	Safe for lactation.. DAO: Low
Stearic Acid	Safe	Bronze	Natural fatty acid.
Vitamin B12	Safe	Gold
Xylitol	Caution	Gold	Caution — sugar alcohol. GI side effects at high doses. Extremely toxic to dogs.

See all 7 ingredients analyzed. Free, instant access.

According to the Clarity Ingredient Safety Database by Health AI. 6 of 7 ingredients verified against 1,595 evidence-graded entries. Last verified: April 2026. Database version 4.2. Check this product live →

What this means

This product contains no Avoid-rated ingredients. Caution items indicate areas to monitor.

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1,595 ingredients. 20+ safety dimensions. Evidence-graded.

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Product analysis by Clarity (Health AI). Based on published evidence for breastfeeding, pregnancy, and general safety. Not medical advice. Formulations may change; verify current ingredients on the label.

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