PlainVitamins

Mega Stress

by Priority One Nutritional Supplements · tablet or pill · 120 tablets

  • On the market (NIH)
  • UPC 8 15354 02098 3
  • DSLD label 277399
  • Serving 2 tablets
  • 60 servings

Mega Stress by Priority One Nutritional Supplements lists 19 ingredients, 19 with an amount per serving of 2 tablets, such as 485 mg of vitamin C, 99 mg of thiamine hydrochloride, 100 mg of riboflavin and 100 mg NE of niacin. Its current label entered the NIH Dietary Supplement Label Database on December 13, 2022.

What is in Mega Stress?

Each row as the label prints it, per serving of 2 tablets. 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 Stress: Supplement Facts rows against the market (DSLD label 277399, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid485 mg539%Vitamin C in Mega Stress against 18,583 products485 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg485 mg

Higher than 81% of 18,583 products listing vitamin C (median 100 mg).

Thiamine Hydrochlorideas Vitamin B199 mg8,208%Thiamin in Mega Stress against 9,830 products99 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg99 mg

Higher than 94% of 9,830 products listing thiamin (median 5 mg).

Riboflavinas Vitamin B2100 mg7,694%Riboflavin in Mega Stress against 9,824 products100 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg100 mg

Higher than 96% of 9,824 products listing riboflavin (median 4 mg).

Niacinas Niacinamide100 mg NE625%Niacin in Mega Stress against 12,413 products100 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg100 mg

Higher than 88% of 12,413 products listing niacin (median 20 mg). 2.9 times the adult UL a day.

Vitamin B6as Pyridoxine Hydrochloride98 mg5,765%Vitamin B6 in Mega Stress against 15,277 products98 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg98 mg

Higher than 96% of 15,277 products listing vitamin B6 (median 6 mg).

Folateas (6S)-5-Methyltetrahydrofolic Acid680 mcg DFE170%
Vitamin B12as Methylcobalamin500 mcg20,833%Vitamin B12 in Mega Stress against 14,425 products500 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg500 mcg

Higher than 82% of 14,425 products listing vitamin B12 (median 36 mcg).

Biotin200 mcg667%Biotin in Mega Stress against 9,447 products200 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg200 mcg

48% of 9,447 products listing biotin give more (median 200 mcg).

Pantothenic Acidas D-Calcium Pantothenate500 mg10,000%Pantothenic Acid (Vitamin B5) in Mega Stress against 10,060 products500 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg500 mg

Higher than 98% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Choline45 mg8%Choline in Mega Stress against 4,738 products45 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg45 mg

Higher than 53% of 4,738 products listing choline (median 40 mg).

Choline Bitartrate100 mcg
Zincas Zinc Chloride, Zinc Picolinate16 mg145%Zinc in Mega Stress against 13,186 products16 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg16 mg

Higher than 78% of 13,186 products listing zinc (median 11 mg).

Chromiumas Chromium Polynicotinate200 mcg167%Chromium in Mega Stress against 7,825 products200 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg200 mcg

Higher than 72% of 7,825 products listing chromium (median 100 mcg).

Para-Amino Benzoic Acid50 mgPABA in Mega Stress 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).

Inositol100 mgInositol in Mega Stress against 4,042 products100 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.100 mg

Higher than 76% of 4,042 products listing inositol (median 30 mg).

Bioflavonoids Extractas Bitter Orange25%250 mg
Licorice500 mgLicorice in Mega Stress against 888 products500 mg per serving; the middle half of products list 42 mg to 300 mg, the median 100 mg.500 mg

Higher than 86% of 888 products listing licorice (median 100 mg).

Asian Ginseng Root Extractas Ginsenosides5% Ginsenosides250 mgGinseng in Mega Stress against 235 products250 mg per serving; the middle half of products list 50 mg to 200 mg, the median 100 mg.250 mg

Higher than 79% of 235 products listing ginseng (median 100 mg).

Adrenal290 mgAdrenals in Mega Stress against 218 products290 mg per serving; the middle half of products list 30 mg to 200 mg, the median 100 mg.290 mg

Higher than 86% of 218 products listing adrenals (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 277399 (entered December 13, 2022), 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 99 mg of thiamin is higher than 94% of the 9,830 thiamin products that print an amount; 596 list more.
  • Its 100 mg of riboflavin is higher than 96% of the 9,824 riboflavin products that print an amount; 110 list more.
  • At 1 serving a day, the most its directions give, the label lists 100 mg of niacin, 2.9 times the adult Tolerable Upper Intake Level.
  • Its 98 mg of vitamin B6 is higher than 96% of the 15,277 vitamin B6 products that print an amount; 633 list more.
  • Its 500 mg of pantothenic acid (vitamin B5) is higher than 98% of the 10,060 pantothenic acid (vitamin B5) products that print an amount; 58 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?

The products whose ingredient lists overlap most with Mega Stress'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
Recommendations: Take two (2) tablets daily, or as directed by your physician.
Warnings
Warning: Contains licorice root which should not be ingested by pregnant women. This product contains naturally occurring adrenal hormones.
Keep out of reach of children.
For professional use only.
Allergens and what it does not contain
Contains no preservatives.
Non-GMO
Storage
Keep container tightly closed, store in a cool, dry place.

Source: label statements in DSLD label 277399.

What else is on the label?

Other ingredients: Stearic Acid, Dicalcium Phosphate, Microcrystaline Cellulose, Croscarmellose Sodium, Silicon Dioxide, Vegetable Magnesium Stearate, Methylcellulose.

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

How many labels does Mega Stress have?

6 labels are on file under this name since September 25, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 277399 (current) Entered December 13, 2022 · on the market · 120 tablets · UPC 8 15354 02098 3
  2. Label 277398 Entered December 13, 2022 · on the market · 60 tablets · UPC 8 15354 02097 6
  3. Label 255612 Entered September 24, 2021 · off the market March 16, 2022 · 120 tablets · UPC 8 15354 02098 3
  4. Label 255611 Entered September 24, 2021 · off the market March 16, 2022 · 60 tablets · UPC 8 15354 02097 6
  5. Label 236811 Entered September 25, 2020 · off the market June 15, 2021 · 120 tablets · UPC 8 15354 02098 3
  6. Label 236809 Entered September 25, 2020 · off the market June 15, 2021 · 60 tablets · UPC 8 15354 02097 6

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

Who makes it?

The label names Priority One Nutritional Supplements, Inc. (distributor). All Priority One Nutritional Supplements products.

Where next?