GNC Women's Iron Complete

Our assessment

The evidence shows that this supplement's primary ingredient, calcium, is essential for bone health, but the data provided does not include specific studies or FDA adverse event reports for this exact product. Our assessment is that you should approach this supplement with caution, as the data for calcium indicates important safety considerations. Data not available for specific efficacy studies on this product.

How it works

Calcium acts as a master regulator for your body's structural framework. It supports bone mineralization and density, and also plays a critical role in neuromuscular relaxation and nerve signaling [NIH ODS]. Think of it as the key mineral that keeps your bones strong and your muscles and nerves communicating properly [NIH ODS].

Safety profile

Out of 592,059 total adverse event reports submitted to the FDA across all supplements, this specific product has no separate report count available. For calcium specifically, some research suggests that high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels of calcium 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 several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

We recommend you consult your healthcare provider before starting this supplement, especially if you take any prescription medications for osteoporosis, thyroid conditions, or infections. The data underscores that calcium intake should be carefully managed to avoid adverse effects [NIH ODS]. Do not exceed the recommended dose on the label, and be mindful of total calcium from all sources including food and other supplements [NIH ODS].

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