MusclePharm Arnold Iron Pack
Brand: MusclePharm · Form: SUPPLEMENT FORM, OTHER [E0172] On Market
Our assessment
The evidence shows that the MusclePharm Arnold Iron Pack is a multivitamin and mineral supplement, but our assessment must focus on one of its key ingredients: Calcium. For calcium, the data indicates it plays a specific role in bone and muscle function, but it also comes with clear safety considerations you should be aware of [NIH ODS].
How it works
Think of calcium as a dual-purpose messenger in your body. It supports bone mineralization, meaning it helps deposit minerals into your skeleton for density and strength. At the same time, it supports neuromuscular relaxation, helping your muscles relax and your nerves signal properly after contraction [NIH ODS].
Safety profile
Data not available for this specific product. However, for the ingredient calcium, high intakes are linked to potential risks including constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, and abnormal heart rhythms. Some research also suggests high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. The FDA has received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product are not available [FDA data].
Our recommendation
Our recommendation is to be cautious. Because high calcium intakes can interfere with the absorption of certain medications like bisphosphonates, tetracycline antibiotics, and levothyroxine, you should check with your healthcare provider before starting this supplement [NIH ODS]. Start with the lowest possible dose and monitor for any side effects like constipation or nausea [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | MusclePharm |
|---|---|
| Serving Size | |
| Contents | 0.0 Not Present |
| Market Status | On Market |
How to Read This Label
Supplement labels contain several key sections regulated by the FDA:
- Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
- Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
- % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
- Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
- Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.
Source: FDA Dietary Supplement Labeling Guide