GNC Total Lean Advanced Diet Cleanse Fiber Rich Fruit & Veggie Purifying Complex

Our assessment

Our assessment: This product contains Calcium, a mineral that supports bone density and neuromuscular relaxation [NIH ODS]. However, the evidence shows that calcium supplementation carries specific risks that you need to understand before use. The FDA has received a total of 592,059 adverse event reports across all supplement categories, which underscores the importance of reviewing safety data carefully [FDA data].

How it works

Think of calcium as a structural building block for your bones and a signal regulator for your muscles and nerves. It works through bone mineralization to support bone density and mineral deposition, and it supports muscle relaxation and nerve signaling through neuromuscular relaxation [NIH ODS].

Safety profile

Some research suggests that high calcium 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]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Our recommendation: You should consult your healthcare provider before starting this product, especially if you take any of the medications listed above. Data is not available on the specific amount of calcium in this blend, so we cannot confirm the dose you would be receiving. Start only under professional guidance and be aware of the specific side effects and medication interactions documented [NIH ODS] [FDA data].

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