GNC Women's Hair, Skin & Nails Program Advanced Collagen Formula
Brand: GNC Women's · Form: CAPSULE [E0159]
Our assessment
The evidence shows that this product contains calcium, a mineral essential for bone health. However, we cannot evaluate the specific GNC Women's Hair, Skin & Nails Program Advanced Collagen Formula beyond this single ingredient, as data on its other components is not available. Our assessment: calcium is a key nutrient, but its role in hair, skin, and nail health is indirect and primarily supports overall structural integrity through bone mineralization [NIH ODS].
How it works
Think of calcium as a foundational building block for your body. It supports bone density and mineral deposition, which is critical for your skeletal framework, and it aids neuromuscular relaxation for proper nerve signaling and muscle function [NIH ODS]. While calcium is vital, there is no direct evidence from the provided data that it specifically enhances hair, skin, or nail growth or appearance in this formulation.
Safety profile
FDA received 592,059 total adverse event reports for products in this category, though this number covers all supplements, not just this specific formula [FDA data]. For calcium, high intakes might increase the risk of heart disease and prostate cancer. Very high levels in the blood and urine can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation: Before starting this product, check your current calcium intake from food and other supplements. If you are already meeting your needs through diet, adding more may not provide benefits and could carry risks [NIH ODS]. If you take any medications listed above, separate calcium intake by at least two hours [NIH ODS]. For specific guidance on hair, skin, and nail health, data on this product's other ingredients is not available, so we cannot recommend it for that purpose based on the provided information.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC Women's |
|---|---|
| Serving Size | |
| Contents | 30.0 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