Muscle Function Formula
by GNC Pro Performance AMP · capsule · 30 paks
- On the market (NIH)
- DSLD label 45115
- Serving 2 capsules
Muscle Function Formula by GNC Pro Performance AMP lists 5 ingredients, 5 with an amount per serving of 2 capsules, such as 60 mg of magnesium, 30 mg of zinc, 150 mg of L-leucine and 50 mg of L-isoleucine. Its current label entered the NIH Dietary Supplement Label Database on May 22, 2015.
What is in Muscle Function Formula?
Each row as the label prints it, per serving of 2 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Magnesiumas Magnesium AspartateMagnesium (Form: as Magnesium Aspartate) | 60 mg | 15% | 56% of 14,003 products listing magnesium give more (median 86 mg). |
| Zincas Zinc ArginateZinc (Form: as Zinc Arginate) | 30 mg | 200% | Higher than 90% of 13,186 products listing zinc (median 11 mg). |
| L-Leucine | 150 mg | 91% of 2,056 products listing leucine give more (median 2.5 g). | |
| L-Isoleucine | 50 mg | 96% of 1,614 products listing isoleucine give more (median 1.23 g). | |
| L-Valine | 50 mg | 96% of 1,632 products listing valine give more (median 1.25 g). |
Source: NIH ODS Dietary Supplement Label Database, label 45115 (entered May 22, 2015), 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?
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:
- 91% of the 2,056 products that print an amount of leucine list more than its 0.15 g of L-leucine (filed by NIH under leucine) (median 2.5 g).
- 96% of the 1,614 products that print an amount of isoleucine list more than its 0.05 g of L-isoleucine (filed by NIH under isoleucine) (median 1.23 g).
- 96% of the 1,632 products that print an amount of valine list more than its 0.05 g of L-valine (filed by NIH under valine) (median 1.25 g).
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.
- Nighttime RestoreGNC Pro Performance same ingredients
- BCAA Powder Berry Blast FlavourILN Iron Labs Nutrition 4 shared, 74% alike
- BCAA Ethyl EsterAxis Labs 3 shared, 73% alike
- BcaaAA Anabolic Agents · off the market 3 shared, 73% alike
- BCAA Muscle GuardInterActive Nutrition 3 shared, 73% alike
- RapidDrive BCAA 5000 UnflavoredGNC Pro Performance 3 shared, 73% alike
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: As a dietary supplement, take the contents of one packet daily with food after your workout. Do not take prior to bed.
- For maximum performance and physique support, stack with: -Amplified Recovery Protein XR(TM) for post-workout muscle support. - Amplified Creatine 189(TM) to fuel muscles and promote cell hydration.
- 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.
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 45115.
What else is on the label?
Other ingredients: Cellulose, Gelatin, Titanium Dioxide.
How many labels does Muscle Function Formula have?
One label is on file, entered on May 22, 2015.
- Label 45115 (current) Entered May 22, 2015 · on the market · 30 paks
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 Pro Performance AMP products.