CVS Pharmacy Fiber Capsules

Our assessment

The evidence shows that the primary active ingredient in these fiber capsules is likely calcium, based on available data. While calcium is essential for bone health, the specific benefits of this product for digestive regularity or fiber intake are not supported by the data provided. You should consider this product primarily as a calcium supplement, not a fiber supplement, unless additional product-specific information is available.

How it works

Calcium acts as a master regulator for your bones and muscles. It supports bone mineralization, helping maintain bone density, and aids in neuromuscular relaxation, which helps your muscles and nerves signal properly [NIH ODS]. However, without specific fiber data, we cannot confirm how these capsules contribute to digestive health or regularity.

Safety profile

Data not available for this specific product's adverse events. For calcium generally, FDA has received 592,059 total adverse event reports across all supplements, though this number is not specific to this product. Potential side effects from high calcium intake include constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. High intakes might also increase the risk of heart disease and prostate cancer [NIH ODS].

Our recommendation

We recommend you verify the exact fiber content on the product label, as the data does not confirm this product provides meaningful fiber. If you are taking calcium, be aware it can reduce the absorption of medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. For fiber needs, consider a product specifically labeled with a confirmed fiber source and dosage. For calcium needs, the data does not provide a specific recommended dose for this product.

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