Sublingual Liquid B-12
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
purified Water, Sorbitol, Vegetable Glycerin, natural Berry flavor, Citric Acid, Potassium Sorbate
Recommended Use
Directions: Shake well before use. For adults, place one (1) mL daily under the tongue and hold there for 30 seconds before swallowing.
Warnings
Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Do not use if outer seal is broken or missing.
Frequently Asked Questions
What is Nature's Bounty Sublingual Liquid B-12's Formulate score?
Nature's Bounty Sublingual Liquid B-12 scores 80 out of 100 (grade A-) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Nature's Bounty Sublingual Liquid B-12 worth it?
Nature's Bounty Sublingual Liquid B-12 scores 80/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Nature's Bounty Sublingual Liquid B-12?
Each serving contains Vitamin B12 (5000 mcg). Serving size: 1 mL. 59 servings per container.
How do I take sublingual liquid b-12?
Directions: Shake well before use. For adults, place one (1) mL daily under the tongue and hold there for 30 seconds before swallowing.
Who makes Sublingual Liquid B-12?
Sublingual Liquid B-12 is made by Nature's Bounty. See Formulate's full grade and product lineup for Nature's Bounty on its brand page.
Is Nature's Bounty Sublingual Liquid B-12 third-party tested?
Nature's Bounty lists the following certifications and testing for this product: Vegetarian, Gluten-Free, Dairy-Free, Sugar-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.