Muscle Function Complex Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Muscle Function Complex against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Muscle Function Complex is a dietary supplement by GNC Milestones with 3 active ingredients.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.
HelloPharmacist Scorecard of Muscle Function Complex by GNC Milestones
Four independent checks of what is known — a summary of the available information, not a grade of the product itself.
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
None of the active ingredients could be matched to our evidence database, so intended use can't be graded.
Why this rating?
- None of the active ingredients could be matched to a HelloPharmacist monograph, so intended use can't be graded against our evidence data.
Every active ingredient lists its own amount on the label.
Why this rating?
- The label discloses an exact amount for 3 of its 3 active ingredients.
- No proprietary blends here — you can verify the dose of every single component.
None of the active ingredients could be matched to our interaction database.
Why this rating?
- We couldn't match any ingredient to a HelloPharmacist monograph, so there was nothing to check interactions against.
None of the active ingredients could be matched to our safety data.
Why this rating?
- We couldn't match any ingredient to a HelloPharmacist monograph, so there was no safety data to measure.
HelloPharmacist summaryFully disclosed formula with no assessable stated purpose. Medication interactions could not be assessed, and safety information could not be assessed.
Assessment coverage: 0 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 2014.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Muscle Function Complex, straight from the product label.
| Brand | GNC Milestones |
|---|---|
| Market status | Off market |
| Date entered into DSLD | Mar 25, 2014 |
| DSLD ID | 31235 |
| Product type | Amino Acid/protein |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Children 4 or More Years of Age, Gluten Free, Dairy Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Muscle Function Complex by GNC Milestones, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Leucine | 350 mg | -- |
| L-Isoleucine | 175 mg | -- |
| L-Valine | 175 mg | -- |
Other ingredients: Cellulose, Gelatin, Dicalcium Phosphate
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements
Muscle Function Complex - Provides a specialized blend of branched chain amino acids (BCAA), the building blocks of protein. BCAA help fuel skeletal muscles during sports and in daily activity, preserving muscle glycogen stores and helping reduce muscle breakdown. BCAA are important for the growth and repair process of muscle tissue.
Muscle Function Complex
Conforms to USP <2091> for weight. Meets USP <2040> disintegration.
Directions: For optimal benefits, as a dietary supplement, take the contents of one packet daily.
Did you know? Teen boys need higher amounts of certain vitamins & minerals essential for muscle function, energy production & general health. And, nutrition surveys reveal that most aren't getting what they need via diet alone.
GNC quality commitment For more than 77 years, GNC has been the leader in the development of superior nutritional supplements. Our products are produced using only fresh, high-quality ingredients and are manufactured under the strictest quality controls.
Each convenient daily pack contains essential vitamins, minerals and other key ingredients to support overall health and wellness, along with specialized formulas to help fuel muscles and support skin and eye health
GNC guarantee If you are not 100% completely satisfied, return the unused portion of the product with your receipt to a GNC store within 30 days. Our trained sales staff will either refund your purchase price, or, if you prefer, assist you in finding a replacement product to help you Live well.
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NEW
- Features essential vitamins, minerals & nutrients to support energy production, immune health & muscle function for active teen boys - Helps fuel muscle cells with specialized amino acid complex necessary for muscle function & recovery
General
CODE 103512 LNG
Suggested/Recommended/Usage/Directions
To ensure a complete nutritional program, take daily with these GNC products: - GNC Protein - Ultra Probiotic Complex 25 - SuperFoods Whole Foods Blend
Brand IP Statement(s)
GNC milestones Teen Vitapak for Boys
Formula
GNC milestones Teen Vitapak for Boys is a complete daily program designed to help active teenage boys meet their nutritional needs.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Precautions
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.
Formulation
No Artificial Colors, no Wheat, no Gluten, no Dairy.
Storage
Store in a cool, dry place.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Muscle Function Complex by GNC Milestones label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Muscle Function Complex by GNC Milestones
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 White Filled Capsule(s) Dosage formCapsule Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
L-Leucine
L-Isoleucine
L-Valine
Other (inactive) ingredients: Cellulose, Gelatin, Dicalcium Phosphate. These complete the product’s ingredient list but are not active constituents.
Muscle Function Complex by GNC Milestones Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Muscle Function Complex. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for Muscle Function Complex, from the product label.
GNC Milestones
See all GNC Milestones products- Name
- General Nutrition Corporation
- City
- Pittsburgh
- State
- PA
- ZipCode
- 15222
- Phone Number
- 1-888-462-2548
- Web Address
- gnc.com
Muscle Function Complex by GNC Milestones: Common Questions
Does Muscle Function Complex by GNC Milestones interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Muscle Function Complex is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
Sources & How We Checked
Muscle Function Complex's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC