PlainVitamins

Muscle Function Complex

by GNC Milestones · capsule · 30 packs

  • On the market (NIH)
  • DSLD label 65755
  • Serving 2 white capsules

Muscle Function Complex by GNC Milestones lists 3 ingredients, 3 with an amount per serving of 2 white capsules, such as 350 mg of L-leucine, 175 mg of L-valine and 175 mg of L-isoleucine. Its current label entered the NIH Dietary Supplement Label Database on October 22, 2016.

What is in Muscle Function Complex?

Each row as the label prints it, per serving of 2 white capsules. 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).

Muscle Function Complex: Supplement Facts rows against the market (DSLD label 65755, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Leucine350 mgLeucine in Muscle Function Complex against 2,056 products0.35 g per serving; the middle half of products list 1 g to 3.5 g, the median 2.5 g.0.35 g

86% of 2,056 products listing leucine give more (median 2.5 g).

L-Valine175 mgValine in Muscle Function Complex against 1,632 products0.175 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.25 g.0.175 g

89% of 1,632 products listing valine give more (median 1.25 g).

L-Isoleucine175 mgIsoleucine in Muscle Function Complex against 1,614 products0.175 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.23 g.0.175 g

89% of 1,614 products listing isoleucine give more (median 1.23 g).

Source: NIH ODS Dietary Supplement Label Database, label 65755 (entered October 22, 2016), version 9.4.0. See the label on DSLD. 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.

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
To ensure a complete nutritional program, take daily with these GNC products: - GNC Protein - Ultra Probiotic Complex 25 - SuperFoods Supreme
Warnings
Warning: 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
No Artificial Colors, no Wheat, no Dairy.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 65755.

What else is on the label?

Other ingredients: Cellulose, Gelatin, Dicalcium Phosphate.

How many labels does Muscle Function Complex have?

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

  1. Label 65755 (current) Entered October 22, 2016 · on the market · 30 packs
  2. Label 31235 Entered March 25, 2014 · off the market February 29, 2016

DSLD also links this label to: Teen Multivitamin For Boys (bundle set), Concentrated Mini Fish Oil (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 General Nutrition Corporation (distributor), Pittsburgh, PA. All GNC Milestones products.

Where next?