PlainVitamins

Sustained Release B Complex 50

by Windmill Natural Vitamins · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 0 35046 00141 4
  • DSLD label 299469
  • Serving 1 tablet
  • 60 servings

Sustained Release B Complex 50 by Windmill Natural Vitamins lists 18 ingredients, 13 with an amount per serving of 1 tablet, such as 50 mg of vitamin B1, 50 mg of vitamin B2, 50 mg of niacin and 50 mg of vitamin B6; 5 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2023.

What is in Sustained Release B Complex 50?

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

Sustained Release B Complex 50: Supplement Facts rows against the market (DSLD label 299469, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin B1as Thiamine Hydrochloride50 mg4,167%Thiamin in Sustained Release B Complex 50 against 9,830 products50 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg50 mg

Higher than 82% of 9,830 products listing thiamin (median 5 mg).

Vitamin B2as Riboflavin50 mg3,846%Riboflavin in Sustained Release B Complex 50 against 9,824 products50 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg50 mg

Higher than 86% of 9,824 products listing riboflavin (median 4 mg).

Niacinas Niacinamide50 mg313%Niacin in Sustained Release B Complex 50 against 12,413 products50 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg50 mg

Higher than 75% of 12,413 products listing niacin (median 20 mg). 1.4 times the adult UL a day.

Vitamin B6as Pyridoxine Hydrochloride50 mg2,941%Vitamin B6 in Sustained Release B Complex 50 against 15,277 products50 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg50 mg

Higher than 87% of 15,277 products listing vitamin B6 (median 6 mg).

Folate170 mcg DFE43%
Folic Acid100 mcg
Vitamin B12as Cyanocobalamin50 mcg2,083%Vitamin B12 in Sustained Release B Complex 50 against 14,425 products50 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg50 mcg

Higher than 51% of 14,425 products listing vitamin B12 (median 36 mcg).

Biotin50 mcg167%Biotin in Sustained Release B Complex 50 against 9,447 products50 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg50 mcg

73% of 9,447 products listing biotin give more (median 200 mcg).

Pantothenic Acidas D-Calcium Pantothenate50 mg1,000%Pantothenic Acid (Vitamin B5) in Sustained Release B Complex 50 against 10,060 products50 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg50 mg

Higher than 72% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Calciumas Dicalcium Phosphate100 mg8%Calcium in Sustained Release B Complex 50 against 17,831 products100 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg100 mg

53% of 17,831 products listing calcium give more (median 115 mg).

Cholineas Choline Bitartrate50 mg9%Choline in Sustained Release B Complex 50 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 Sustained Release B Complex 50 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).

Para-Aminobenzoic Acid30 mgPABA in Sustained Release B Complex 50 against 1,610 products30 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.30 mg

Higher than 53% of 1,610 products listing PABA (median 25 mg).

Base Blend1 mg
Alfalfain the blend, no amount given
Parsleyin the blend, no amount given
Rice Branin the blend, no amount given
Soy Lecithinin the blend, no amount given
Watercressin the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 299469 (entered November 22, 2023), 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:

  • 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?

The products whose ingredient lists overlap most with Sustained Release B Complex 50's, rare ingredients counting for more.

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: Take 1 tablet daily with food as a dietary supplement or as directed by a healthcare professional.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Do not purchase if seal is broken.
Allergens and what it does not contain
NO SUGAR, WHEAT, MILK, ARTIFICIAL COLORS, FLAVORS OR PRESERVATIVES NON GMO GLUTEN FREE
Storage
Protect from heat, light & moisture. Store in a cool, dry place.

Source: label statements in DSLD label 299469.

What else is on the label?

Other ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Stearic Acid, Magnesium Stearate, Silica, Vegetable Stearin, Hypromellose, Glycerin, Carnauba Wax, Talc.

How many labels does Sustained Release B Complex 50 have?

5 labels are on file under this name since June 25, 2014: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 299469 (current) Entered November 22, 2023 · on the market · 60 tablets · UPC 0 35046 00141 4
  2. Label 231252 Entered July 23, 2020 · off the market November 4, 2022 · 60 tablets · UPC 0 35046 00141 4
  3. Label 215396 Entered March 24, 2020 · off the market July 20, 2020 · 60 tablets · UPC 0 35046 00141 4
  4. Label 180973 Entered September 21, 2018 · off the market September 1, 2021 · 60 tablets · UPC 0 35046 00141 4
  5. Label 34033 Entered June 25, 2014 · off the market February 27, 2018 · 60 tablets · UPC 0 35046 00141 4

DSLD also links this label to: High Potency B-Complex (image 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 Windmill Health Products (distributor), West Caldwell, NJ. All Windmill Natural Vitamins products.

Where next?