Jarrow Formulas Fiber Perfect
Brand: Jarrow Formulas · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that calcium is a critical mineral for your bone health, but it is not without risks. Our assessment is that you should be very careful with calcium supplements, as high intakes may increase the risk of heart disease and prostate cancer [NIH ODS]. For a product like Jarrow Formulas Fiber Perfect, the primary ingredient is calcium, so you must consider your total daily intake from food and other supplements.
How it works
Think of calcium as a building block for your skeleton. It supports bone density and mineral deposition, and it also plays a key role in neuromuscular relaxation, helping your muscles relax and nerves signal properly [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements, but specific data for this product is not available. For calcium specifically, high levels in your 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 prioritize getting calcium from food sources first. If you do use a supplement, check your total daily calcium intake to stay below the upper limit. Be sure to take calcium supplements at a different time than any of the medications listed above to avoid absorption problems [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Jarrow Formulas |
|---|---|
| Serving Size | |
| Contents | 150.0 Veggie Cap(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