Jarrow Formulas Fiber Perfect
Brand: Jarrow Formulas · Form: CAPSULE [E0159]
Our assessment
The evidence shows that Jarrow Formulas Fiber Perfect is a dietary supplement intended to support digestive health. Based on the data provided, the primary active ingredient is calcium. Our assessment is that while calcium is essential for bone health, this product’s fiber content is the main reason you might consider it for regularity. However, data on the specific fiber blend in this product is not available.
How it works
Think of calcium as a key structural component for your bones. It supports bone mineralization and density, and also plays a role in neuromuscular relaxation and nerve signaling [NIH ODS]. Fiber, which is the other main component, works by adding bulk to your stool and helping it pass more easily through your digestive tract. The calcium in this product may also aid in muscle function, including the muscles of your digestive system [NIH ODS].
Safety profile
The FDA received a total of 592,059 adverse event reports for all supplements, but specific report counts for Jarrow Formulas Fiber Perfect are not available. Regarding calcium, high intakes can cause constipation, nausea, and weight loss [NIH ODS]. Extremely high levels in the blood can lead to poor muscle tone, poor kidney function, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend starting with a low dose to see how your digestive system responds. Because calcium can interfere with certain medications, take this supplement at least two hours apart from any prescriptions you use for osteoporosis, thyroid conditions, or infections [NIH ODS]. If you have a history of kidney stones, heart disease, or prostate cancer, consult your doctor before use, as high calcium intakes might increase risk for these conditions [NIH ODS]. For most people, getting fiber and calcium from whole foods is the preferred first step.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Jarrow Formulas |
|---|---|
| Serving Size | |
| Contents | 150.0 Vegetarian Capsule(s) |
| Market Status | Off 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