PlainVitamins

Endurance Complex

by GNC Pro Performance · other (e.g. tea bag) · 30 packs

  • On the market (NIH)
  • DSLD label 315317
  • Serving 2 mottled brown caplets
  • 30 servings

Endurance Complex by GNC Pro Performance lists 5 ingredients, 5 with an amount per serving of 2 mottled brown caplets, such as 150 mg of vitamin C, 105 mg of magnesium, 150 mg of potassium and 400 mg of arjuna bark extract, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on October 24, 2024.

What is in Endurance Complex?

Each row as the label prints it, per serving of 2 mottled brown caplets. 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).

Endurance Complex: Supplement Facts rows against the market (DSLD label 315317, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid150 mg167%Vitamin C in Endurance Complex against 18,583 products150 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg150 mg

Higher than 58% of 18,583 products listing vitamin C (median 100 mg).

Magnesiumas Magnesium Oxide105 mg25%Magnesium in Endurance Complex against 14,003 products105 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg105 mg

Higher than 63% of 14,003 products listing magnesium (median 86 mg).

Sodiumas Sodium Chloride200 mg9%Sodium in Endurance Complex against 14,514 products200 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.200 mg

Higher than 83% of 14,514 products listing sodium (median 55 mg).

Potassiumas Potassium Chloride150 mg3%Potassium in Endurance Complex against 11,614 products150 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg150 mg

Higher than 66% of 11,614 products listing potassium (median 99 mg).

Arjuna Bark Extractarjuna tree bark extract400 mgTerminalia in Endurance Complex against 86 products400 mg per serving; the middle half of products list 100 mg to 700 mg, the median 425 mg.400 mg

50% of 86 products listing terminalia give more (median 425 mg).

Polyphenolsstandardized to 30% polyphenols120 mgPolyphenols in Endurance Complex against 249 products120 mg per serving; the middle half of products list 19.5 mg to 180 mg, the median 80 mg.120 mg

Higher than 65% of 249 products listing polyphenols (median 80 mg).

Source: NIH ODS Dietary Supplement Label Database, label 315317 (entered October 24, 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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.

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: As a dietary supplement, take the contents of one pack daily with food and 16 fl. oz. of water.
Warnings
Warning: Cancer and reproductive harm- www.P65Warnings.ca.gov.
Consult your physician prior to using this product if you are pregnant, nursing, taking medication or have a medical condition.
Discontinue use two weeks prior to surgery.
Keep out of reach of children.
Allergens and what it does not contain
Product was tested & monitored for over 285 banned substances on the 2023 World Anti-Doping Agency (WADA) Prohibited list via LGC skip lot testing protocol #ICP0307.
Gluten Free. Gf Gluten free
Banned Substance Tested & Stim Free designed with trusted ingredients so you can make informed choices to support your goals without compromise.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 315317.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Croscarmellose Sodium, Hydroxypropyl Cellulose, Carnauba Wax, Hydroxypropyl Methylcellulose, Magnesium Stearate, Polyethylene Glycol, Polysorbate 80, Silicon Dioxide, Stearic Acid, Vegetable Acetoglycerides.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Informed Choice We Test You Trust Regularly Tested for Banned Substances; Banned Substance Tested. Listed with: Informed Sport or Informed Choice (a seal is the label's claim; the certifier's own list confirms it).

How many labels does Endurance Complex have?

One label is on file, entered on October 24, 2024.

  1. Label 315317 (current) Entered October 24, 2024 · on the market · 30 packs

DSLD also links this label to: Fish Oil Omega-3s (bundle set), Daily Multivitamin (bundle set).

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

Who makes it?

The label names GNC Holdings, LLC (distributor), Pittsburgh, PA. All GNC Pro Performance products.

Where next?