Fully Active B Complex with Quatrefolic by Doctor's Best — Ingredients, Evidence & Safety

🟢 96/100

This product looks safe

Vitamin B3: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)
67% of ingredients have research evidence

C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Vitamin B3: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)

Label Data

1 Veggie Capsule(s) Serving Size

60 Servings

Vitamin Product Type

67% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C

40 mg (45% DV)

Vitamin B1

60 mg (5000% DV)

📊 50.0× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)

RDA 1.2mg This product: 60mg

Vitamin B2

75 mg (5770% DV)

📊 57.7× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 75mg

Vitamin B3

50 mg (310% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 1.4× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)

RDA 14mg This product: 50mg UL 35mg

Vitamin B6

50 mg (2940% DV)

📊 38.5× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 50mg UL 100mg

Quatrefolic

400 mcg (100% DV)

Vitamin B12

1000 mcg (41670% DV)

📊 416.7× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 1.0mg

Biotin

600 mcg (2000% DV)

📊 20.0× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 0.6mg

Pantothenic Acid

100 mg (2000% DV)

📊 20.0× RDA — above typical dose 📚 1 studies — no high-quality reviews

RDA 5mg This product: 100mg

Other Ingredients

Modified Cellulose Microcrystalline Cellulose Magnesium Stearate Silicon Dioxide

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested Adult Use: Take 1 capsule daily with food, or as recommended by a nutritionally-informed physician.

🧪 Formulation Notes

Doctor's Best Fully Active B Complex contains all eight important B Vitamins, a full spectrum designed for optimal absorption and utilization to support overall health and well-being. Water-soluble B vitamins play important roles in cell metabolism, supporting DNA, organs, genes, cells, tissues, skin health, immune system, enzyme functions and energy production. Quatrefolic is the glucosamine salt of (6S)-5-methyltetrahydrofolate, the most bioavailable form of folate, that provides greater stability and water solubility. Folate is an essential vitamin to support DNA, proper cell division, cardiovascular, mental and emotional well-being.

Helps support energy production and cell metabolism

Non-GMO Gluten free Soy free

Vegan

Helps support energy production Helps support body metabolism and new cells Helps support DNA, the body's genetic blueprint Full spectrum B vitamins help support health and well-being