PlainVitamins

Mega B-50

by Puritan's Pride · capsule · 100 rapid release capsules

  • On the market (NIH)
  • UPC 0 74312 15920 6
  • DSLD label 285557
  • Serving 1 capsule
  • 100 servings

Mega B-50 by Puritan's Pride lists 17 ingredients, 12 with an amount per serving of 1 capsule, such as 50 mg of thiamine, 50 mg of riboflavin, 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 May 24, 2023.

What is in Mega B-50?

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).

Mega B-50: Supplement Facts rows against the market (DSLD label 285557, January 2026 release)
IngredientAmount% DVAmong products listing it
Thiamineas Thiamine Mononitrate, Vitamin B150 mg4,167%Thiamin in Mega B-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).

Riboflavinas Vitamin B250 mg3,846%Riboflavin in Mega B-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 Mega B-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 Mega B-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).

Folate666 mcg DFE167%
Folic Acid400 mcg
Vitamin B12as Cyanocobalamin50 mcg2,083%Vitamin B12 in Mega B-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).

Biotinas D-Biotin50 mcg167%Biotin in Mega B-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 Mega B-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).

Cholineas Choline Bitartrate20 mg4%Choline in Mega B-50 against 4,738 products20 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg20 mg

68% of 4,738 products listing choline give more (median 40 mg).

Inositol50 mgInositol in Mega B-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).

Paba50 mgPABA in Mega B-50 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).

Proprietary Blend5 mg
Alfalfain the blend, no amount given
Watercressin the blend, no amount given
Parsleyin the blend, no amount given
Soy Lecithinin the blend, no amount given
Rice Branin the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 285557 (entered May 24, 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?

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: For adults, take one (1) capsule daily, preferably with a meal.
Warnings
Warning: If you are pregnant, nursing, taking any medications, have any medical condition, or are planning to undergo any clinical lab testing, consult your doctor before use. Some supplements may interact with certain medications and/or interfere with certain lab tests.
Discontinue use and consult your doctor if any adverse reactions occur.
Keep out of reach of children.
Do not use if seal under cap is broken or missing.
Contains soy ingredients. Contains bioengineered food ingredients.
Storage
Store at room temperature.

Source: label statements in DSLD label 285557.

What else is on the label?

Other ingredients: Gelatin, Cellulose, Calcium Silicate, Silica, Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): QA Quality Assured.

How many labels does Mega B-50 have?

3 labels are on file under this name since May 24, 2023: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 285557 (current) Entered May 24, 2023 · on the market · 100 rapid release capsules · UPC 0 74312 15920 6
  2. Label 285555 Entered May 24, 2023 · on the market · 100 easy to swallow coated caplets · UPC 0 74312 10583 8
  3. Label 285049 Entered May 24, 2023 · on the market · 250 easy to swallow coated caplets · UPC 0 74312 10585 2

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

Who makes it?

The label names Puritan's Pride, Inc. (manufacturer), Ronkonkoma, NY, U.S.A.. All Puritan's Pride products.

Where next?