GNC Pro Performance RapidDrive Pre-Workout Amino Complex Fruit Punch
Brand: GNC Pro Performance · Form: POWDER [E0162] On Market
Our assessment
The evidence shows that the calcium in this pre-workout formula supports bone health and muscle function, but the amount provided is not specified in the data. For general bone health, the RDA for most adults is 1,000 mg daily [NIH ODS]. Without knowing the exact dose in this product, it is difficult to assess whether it meets your needs or poses a risk of excessive intake.
How it works
Think of calcium as a structural building block for your skeleton and a signaling molecule for your muscles. It supports bone mineralization to maintain density and helps your muscles relax after contraction through neuromuscular signaling [NIH ODS].
Safety profile
FDA has received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product are not available. High calcium intakes may increase the risk of heart disease and prostate cancer [NIH ODS]. Excessive levels can cause 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 absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Check the label for the exact calcium dose per serving. If you already take a calcium supplement or eat a diet rich in dairy, you may not need additional calcium from a pre-workout. Take this product at least 2 hours apart from any thyroid medication or antibiotics to avoid absorption issues [NIH ODS]. If you have a history of kidney stones or heart disease, consult your doctor before use [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC Pro Performance |
|---|---|
| Serving Size | |
| Contents | 10.92 oz. 310.0 g |
| 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