Fully Active B Complex with Quatrefolic, 30 Veggie Caps
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
Hypromellose, Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide
Recommended Use
Suggested Adult Use: Take 1 capsule daily with food, or as recommended by a nutritionally informed physician.
Warnings
Warning: Do not exceed recommended dose. Consult a physician if hypersensitive to thiamin (vitamin B1), niacin, and vitamin B12. Discontinue use and consult a physician if adverse reaction occurs. Keep out of reach of children.
Frequently Asked Questions
What is Doctor's Best Fully Active B Complex with Quatrefolic, 30 Veggie Caps's Formulate score?
Doctor's Best Fully Active B Complex with Quatrefolic, 30 Veggie Caps scores 85 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 Doctor's Best Fully Active B Complex with Quatrefolic, 30 Veggie Caps worth it?
Doctor's Best Fully Active B Complex with Quatrefolic, 30 Veggie Caps scores 85/100 (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 Doctor's Best Fully Active B Complex with Quatrefolic, 30 Veggie Caps?
Each serving contains Vitamin C (40 mg), Thiamine (60 mg), Riboflavin (75 mg), Niacin (50 mg), and more. Serving size: 1 Veggie Capsule(s). 30 servings per container.
How do I take fully active b complex with quatrefolic, 30 veggie caps?
Suggested Adult Use: Take 1 capsule daily with food, or as recommended by a nutritionally informed physician.
Who makes Fully Active B Complex with Quatrefolic, 30 Veggie Caps?
Fully Active B Complex with Quatrefolic, 30 Veggie Caps is made by Doctor's Best. See Formulate's full grade and product lineup for Doctor's Best on its brand page.
Is Doctor's Best Fully Active B Complex with Quatrefolic, 30 Veggie Caps third-party tested?
Doctor's Best lists the following certifications and testing for this product: Non-GMO, Gluten-Free, Vegan, Vegetarian.
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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.