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

🟢 92/100

This product looks safe

Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)
Folate: 400mg is 400.0× the Tolerable Upper Intake Level (1.0mg)
78% of ingredients have research evidence

D Label Compliance Grade

Product Label

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Safety Alerts

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

⚠️ Folate: 400mg is 400.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

1 Veggie Capsule(s) Serving Size

60 Servings

Vitamin Product Type

78% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C

40 mg (44% DV)

Thiamine

60 mg (5000% DV)

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

RDA 1.2mg This product: 60mg

Riboflavin

75 mg (5769% DV)

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

RDA 1.3mg This product: 75mg

Niacin

50 mg (313% 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 (2941% 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

Folate

400 mcg DFE (100% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 400.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 400mg UL 1.0mg

Vitamin B12

1000 mcg (41667% 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

Hypromellose 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 Dairy Free

Product Information

📋 Directions for Use

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

⚠️ Warnings & Precautions

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.

🧪 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, heart, mental and emotional well-being. Full spectrum B vitamins help support health and well-being

Helps support energy production Helps support body metabolism and new cells Helps support DNA, the body's genetic blueprint

Non-GMO/Gluten free/Soy free

Vegan

Helps support energy production and cell metabolism

Vegan