Fully Active B Complex with Quatrefolic
by Doctor's Best · capsule · 60 veggie caps
- On the market (NIH)
- UPC 7 53950 00501 3
- DSLD label 302660
- Serving 1 veggie capsule
- 60 servings
Fully Active B Complex with Quatrefolic by Doctor's Best lists 9 ingredients, 9 with an amount per serving of 1 veggie capsule, such as 40 mg of vitamin C, 60 mg of thiamine, 75 mg of riboflavin and 50 mg of niacin. Its current label entered the NIH Dietary Supplement Label Database on January 24, 2024.
What is in Fully Active B Complex with Quatrefolic?
Each row as the label prints it, per serving of 1 veggie capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin Cas Ascorbic Acid | 40 mg | 44% | 81% of 18,583 products listing vitamin C give more (median 100 mg). |
| Thiamineas Thiamine Hydrochloride | 60 mg | 5,000% | Higher than 91% of 9,830 products listing thiamin (median 5 mg). |
| Riboflavinas Riboflavin, Riboflavin 5-Phosphate | 75 mg | 5,769% | Higher than 94% of 9,824 products listing riboflavin (median 4 mg). |
| Niacinas Niacin, Niacinamide | 50 mg | 313% | Higher than 75% of 12,413 products listing niacin (median 20 mg). 1.4 times the adult UL a day. |
| Vitamin B6as Pyridoxal 5-Phosphate, Pyridoxine Hydrochloride | 50 mg | 2,941% | Higher than 87% of 15,277 products listing vitamin B6 (median 6 mg). |
| Folateas Quatrefolic | 400 mcg DFE | 100% | |
| Vitamin B12as Methylcobalamin | 1,000 mcg | 41,667% | Higher than 89% of 14,425 products listing vitamin B12 (median 36 mcg). |
| Biotin | 600 mcg | 2,000% | Higher than 81% of 9,447 products listing biotin (median 200 mcg). |
| Pantothenic Acidas D-Calcium Pantothenate | 100 mg | 2,000% | Higher than 86% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 302660 (entered January 24, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:
- Its 60 mg of thiamin is higher than 91% of the 9,830 thiamin products that print an amount; 822 list more.
- Its 75 mg of riboflavin is higher than 94% of the 9,824 riboflavin products that print an amount; 486 list more.
- At 1 serving a day, the most its directions give, the label lists 50 mg of niacin, 1.4 times the adult Tolerable Upper Intake Level.
The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
6 products list the very same ingredients; the nearest amounts come first.
- Fully Active B ComplexDoctor's Best same ingredients
- Super B-ComplexIgennus Healthcare Nutrition same ingredients
- Activated B-ComplexPure Prescriptions same ingredients
- B-Complex w/Vitamin CWonder Laboratories same ingredients
- B-Complex w/Vitamin C Time ReleaseDC same ingredients
- B ComplexCarlson same ingredients
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- 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.
- Allergens and what it does not contain
- Non-GMO/Gluten free/Soy free
- Storage
- Store in a cool dry place.
Source: label statements in DSLD label 302660.
What else is on the label?
Other ingredients: Hypromellose, Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide.
How many labels does Fully Active B Complex with Quatrefolic have?
3 labels are on file under this name since May 28, 2019: other sizes, label designs and reformulations. The current one leads this page.
- Label 302660 (current) Entered January 24, 2024 · on the market · 60 veggie caps · UPC 7 53950 00501 3
- Label 209368 Entered November 21, 2019 · on the market · 60 veggie caps · UPC 7 53950 00501 3
- Label 203261 Entered May 28, 2019 · off the market June 30, 2019 · 30 veggie caps · UPC 7 53950 00299 9
DSLD also links this label to: Best Fully Active B Complex (package size difference, same product), Fully Active B Complex (package size difference, same product), Fully Active B Complex (package size difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Doctor's Best, Inc. (distributor), California. All Doctor's Best products.