Herbalife Active Fiber Complex Unflavored

Our assessment

The evidence shows that Herbalife Active Fiber Complex Unflavored contains the mineral calcium as an ingredient. For the general audience seeking a fiber supplement, our assessment is that while fiber is beneficial, the calcium content introduces specific considerations you must be aware of. The data confirms that calcium supports bone mineralization and neuromuscular relaxation [NIH ODS]. However, your primary reason for taking this product is likely fiber intake, not calcium supplementation.

How it works

Think of calcium as a key structural component for your bones and a signaling molecule for your nerves and muscles. It works through bone mineralization to support bone density and through neuromuscular relaxation to support muscle and nerve signaling [NIH ODS]. If you are already getting calcium from your diet or other supplements, adding more from this fiber product could push your intake higher than intended.

Safety profile

FDA has received a total of 592,059 adverse event reports across all supplements, though specific report counts for this product are not available. For calcium itself, safety concerns include that high intakes might increase the risk of heart disease and prostate cancer. 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]. You should also know that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Our recommendation is to assess your total daily calcium intake before adding this product. If you already take a calcium supplement or consume multiple servings of dairy, this fiber product may push you into the high-intake risk zone. Monitor for side effects like constipation or nausea. If you take any of the medications listed above, separate your dose of this fiber product by at least 2 hours. For most people, a fiber supplement without added minerals is a simpler choice. Data not available on specific serving size or exact calcium content per serving from the provided information.

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