21st Century Psyllium Fiber
Brand: 21st Century · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that psyllium fiber is a well-researched supplement for digestive health. However, for the specific product 21st Century Psyllium Fiber, we only have data on its calcium content. Our assessment is based on this ingredient, as no other ingredient data is available. Data not available for psyllium-specific effects from the provided information.
How it works
Think of the calcium in this product as a structural supporter. It plays a key role in bone mineralization, helping to maintain bone density and mineral deposition. It also supports neuromuscular relaxation, aiding in proper muscle function and nerve signaling [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements. For calcium, high intakes might increase the risk of heart disease and prostate cancer. 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].
Our recommendation
We recommend you use this product only if your goal is to increase your calcium intake. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data not available for psyllium-specific dosing or benefits from the provided information. Consult your healthcare provider to ensure this supplement is right for you.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | 21st Century |
|---|---|
| Serving Size | |
| Contents | 160.0 Capsule(s) |
| Market Status | On Market |
How to Read This Label
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