PlainVitamins

Ultra-Stress Sustained Release

by NaturesPlus · tablet or pill · 30 tablets

  • On the market (NIH)
  • UPC 0 97467 01229 5
  • DSLD label 320536
  • Serving 1 tablet
  • 30 servings

Ultra-Stress Sustained Release by NaturesPlus lists 14 ingredients, 14 with an amount per serving of 1 tablet, such as 500 mg of vitamin C, 125 mg of thiamine, 125 mg of riboflavin and 125 mg NE of niacin. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2024.

What is in Ultra-Stress Sustained Release?

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).

Ultra-Stress Sustained Release: Supplement Facts rows against the market (DSLD label 320536, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid500 mg556%Vitamin C in Ultra-Stress Sustained Release against 18,583 products500 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg500 mg

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

Thiamineas Thiamine Hydrochloride, Vitamin B1125 mg10,417%Thiamin in Ultra-Stress Sustained Release against 9,830 products125 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg125 mg

Higher than 99% of 9,830 products listing thiamin (median 5 mg).

Riboflavinas Vitamin B2125 mg9,615%Riboflavin in Ultra-Stress Sustained Release against 9,824 products125 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg125 mg

Higher than 99% of 9,824 products listing riboflavin (median 4 mg).

Niacinas Niacinamide125 mg NE781%Niacin in Ultra-Stress Sustained Release against 12,413 products125 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg125 mg

Higher than 93% of 12,413 products listing niacin (median 20 mg). 3.6 times the adult UL a day.

Vitamin B6as Pyridoxine Hydrochloride125 mg7,353%Vitamin B6 in Ultra-Stress Sustained Release against 15,277 products125 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg125 mg

Higher than over 99% of 15,277 products listing vitamin B6 (median 6 mg). 1.3 times the adult UL a day.

Folateas Calcium L-5-Methyltetrahydrofolate667 mcg DFE167%
L-Methylfolate400 mcg
Vitamin B12as Methylcobalamin500 mcg20,833%Vitamin B12 in Ultra-Stress Sustained Release 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).

Biotin125 mcg417%Biotin in Ultra-Stress Sustained Release against 9,447 products125 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg125 mcg

59% of 9,447 products listing biotin give more (median 200 mcg).

Pantothenic Acidas Calcium Pantothenate200 mg4,000%Pantothenic Acid (Vitamin B5) in Ultra-Stress Sustained Release against 10,060 products200 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg200 mg

Higher than 95% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Cholineas Choline Bitartrate32 mg6%Choline in Ultra-Stress Sustained Release against 4,738 products32 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg32 mg

52% of 4,738 products listing choline give more (median 40 mg).

Ironas Iron Amino Acid Chelatecomplex20 mg111%Iron in Ultra-Stress Sustained Release against 6,910 products20 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg20 mg

Higher than 85% of 6,910 products listing iron (median 5 mg).

Inositol75 mgInositol in Ultra-Stress Sustained Release against 4,042 products75 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.75 mg

Higher than 72% of 4,042 products listing inositol (median 30 mg).

Para-Aminobenzoic Acid50 mgPABA in Ultra-Stress Sustained Release 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 320536 (entered November 22, 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 125 mg of thiamin is higher than 99% of the 9,830 thiamin products that print an amount; 110 list more.
  • Its 125 mg of riboflavin is higher than 99% of the 9,824 riboflavin products that print an amount; 92 list more.
  • At 1 serving a day, the most its directions give, the label lists 125 mg of niacin, 3.6 times the adult Tolerable Upper Intake Level.
  • At 1 serving a day, the most its directions give, the label lists 125 mg of vitamin B6, 1.3 times the adult Tolerable Upper Intake Level.
  • Its 200 mg of pantothenic acid (vitamin B5) is higher than 95% of the 10,060 pantothenic acid (vitamin B5) products that print an amount; 406 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?

1 product lists 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 tablet daily, preferably with a meal.
Warnings
Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a physician or poison control center immediately.

Source: label statements in DSLD label 320536.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Stearic Acid, Microcrystalline Cellulose, Ferrous Fumarate, Magnesium Stearate, Rose Hip, Soy Protein Isolate, Rice, Pharmaceutical Glaze.

How many labels does Ultra-Stress Sustained Release have?

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

  1. Label 320536 (current) Entered November 22, 2024 · on the market · 30 tablets · UPC 0 97467 01229 5
  2. Label 298639 Entered October 24, 2023 · on the market · 90 tablets · UPC 0 97467 01231 8

DSLD also links this label to: Ultra-Stress (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 Natural Organics Laboratories Inc. makers of Nature's Plus (manufacturer), Amityville, NY. All NaturesPlus products.

Where next?