GNC Potassium Plus 99 mg

Our assessment

The evidence shows that GNC Potassium Plus 99 mg is a straightforward potassium supplement, but our assessment must focus on the ingredient data provided. Based on the data, the primary ingredient information available is for calcium, not potassium. For calcium, the evidence shows it supports bone mineralization and neuromuscular relaxation [NIH ODS]. However, for the specific product you asked about, data on potassium is not available in the provided materials.

How it works

Think of calcium as a structural builder for your bones and a signal regulator for your muscles and nerves. It supports bone density and mineral deposition, and it helps your muscles relax and your nerves send signals properly [NIH ODS].

Safety profile

FDA received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product are not available. For calcium, safety data shows 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

Data not available for a specific recommendation on GNC Potassium Plus 99 mg, as the provided data pertains to calcium. For calcium supplements, you should be aware of potential medication interactions and the risks of high intakes [NIH ODS]. Always consult your healthcare provider before starting any new supplement.

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