PlainVitamins

B-Complex

by Metabolic Maintenance · capsule · 90 capsules

  • On the market (NIH)
  • UPC 8 38287 00500 1
  • DSLD label 321269
  • Serving 1 capsule
  • 90 servings

B-Complex by Metabolic Maintenance lists 13 ingredients, 13 with an amount per serving of 1 capsule, such as 15 mg of vitamin C, 25 mg of thiamine, 25 mg of riboflavin and 150 mg NE of niacin. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2025.

What is in B-Complex?

Each row as the label prints it, per serving of 1 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).

B-Complex: Supplement Facts rows against the market (DSLD label 321269, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbyl Palmitate15 mg17%Vitamin C in B-Complex against 18,583 products15 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg15 mg

93% of 18,583 products listing vitamin C give more (median 100 mg).

Thiamineas Thiamine Mononitrate25 mg2,083%Thiamin in B-Complex against 9,830 products25 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg25 mg

Higher than 72% of 9,830 products listing thiamin (median 5 mg).

Riboflavinas Riboflavin 5-Phosphate25 mg1,923%Riboflavin in B-Complex against 9,824 products25 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg25 mg

Higher than 75% of 9,824 products listing riboflavin (median 4 mg).

Niacinas Niacinamide150 mg NE938%Niacin in B-Complex against 12,413 products150 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg150 mg

Higher than 94% of 12,413 products listing niacin (median 20 mg). 4.3 times the adult UL a day.

Vitamin B-6as Pyridoxal 5-Phosphate, Pyridoxine Hydrochloride55 mg3,235%Vitamin B6 in B-Complex against 15,277 products55 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg55 mg

Higher than 94% of 15,277 products listing vitamin B6 (median 6 mg).

Folate1,334 mcg DFE334%
L-5-Methylfolate Calcium Salt800 mcg
Vitamin B12as Methylcobalamin1,000 mcg41,667%Vitamin B12 in B-Complex against 14,425 products1,000 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg1,000 mcg

Higher than 89% of 14,425 products listing vitamin B12 (median 36 mcg).

Biotin400 mcg1,333%Biotin in B-Complex against 9,447 products400 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg400 mcg

Higher than 77% of 9,447 products listing biotin (median 200 mcg).

Pantothenic Acidas Calcium D-Pantothenate150 mg3,000%Pantothenic Acid (Vitamin B5) in B-Complex against 10,060 products150 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg150 mg

Higher than 93% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Cholineas Choline Bitartrate50 mg9%Choline in B-Complex against 4,738 products50 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg50 mg

Higher than 54% of 4,738 products listing choline (median 40 mg).

Inositol50 mgInositol in B-Complex against 4,042 products50 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.50 mg

Higher than 55% of 4,042 products listing inositol (median 30 mg).

Paba50 mgPABA in B-Complex against 1,610 products50 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.50 mg

Higher than 62% of 1,610 products listing PABA (median 25 mg).

Source: NIH ODS Dietary Supplement Label Database, label 321269 (entered February 23, 2025), 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:

  • 93% of the 18,583 products that print an amount of vitamin C list more than its 15 mg of vitamin C (median 100 mg).
  • At 1 serving a day, the most its directions give, the label lists 150 mg of niacin, 4.3 times the adult Tolerable Upper Intake Level.
  • Its 55 mg of vitamin B-6 (filed by NIH under vitamin B6) is higher than 94% of the 15,277 vitamin B6 products that print an amount; 954 list more.
  • Its 150 mg of pantothenic acid (vitamin B5) is higher than 93% of the 10,060 pantothenic acid (vitamin B5) products that print an amount; 557 list more.

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.

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
Directions: One (1) capsule daily with a meal, or as directed by a healthcare professional.
Warnings
Keep tightly closed in a cool, dry place, out of the reach of children.
Allergens and what it does not contain
Egg free Gluten free Free of nuts Dairy free
Storage
Keep tightly closed in a cool, dry place, out of the reach of children. Moisture sensitive formula. Best consumed within 120 days after opening.

Source: label statements in DSLD label 321269.

What else is on the label?

Other ingredients: Cellulose.

How many labels does B-Complex have?

2 labels are on file under this name since September 22, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 321269 (current) Entered February 23, 2025 · on the market · 90 capsules · UPC 8 38287 00500 1
  2. Label 273985 Entered September 22, 2022 · off the market December 13, 2023 · 100 capsules · UPC 8 38287 00500 1

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Metabolic Maintenance (manufacturer), Sisters, Oregon. All Metabolic Maintenance products.

Where next?