Source Naturals Amino Muscle
Brand: Source Naturals · Form: CAPSULE [E0159]
Our assessment
The evidence shows that while Source Naturals Amino Muscle is marketed as a supplement, the only ingredient with sufficient data available is Calcium. Calcium is a mineral that supports bone density and muscle relaxation [NIH ODS]. However, without specific data on the other ingredients in this product, we cannot make a comprehensive assessment of its overall effectiveness for muscle support. For calcium specifically, the data indicates it plays a role in neuromuscular relaxation and nerve signaling [NIH ODS].
How it works
Think of calcium as a key messenger for your muscles. It supports the process of muscle relaxation and nerve signaling, which is essential for coordinated movement [NIH ODS]. Additionally, calcium contributes to bone mineralization, helping to maintain strong bones that support your muscle function [NIH ODS]. For the other components of Source Naturals Amino Muscle, data on their mechanisms is not available.
Safety profile
Based on FDA data, there have been 592,059 total adverse event reports across all products. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Very high blood levels of calcium can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Side effect report counts specific to this product are not available.
Our recommendation
We recommend caution with Source Naturals Amino Muscle. Since data is not available for most of its ingredients, we cannot confirm it will deliver the promised benefits. If you are considering it for calcium, you should know that most adults can meet their calcium needs through diet, and supplements carry risks, especially at high doses [NIH ODS]. Be sure to check with your doctor about potential interactions with any medications you take [NIH ODS]. For muscle support, we recommend focusing on a balanced diet and proven resistance training rather than this supplement.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Source Naturals |
|---|---|
| Serving Size | |
| Contents | 240.0 Capsule(s) |
| Market Status | Off 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