Metamucil MultiHealth Fiber Psyllium Fiber Capsules
Brand: Metamucil · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that Metamucil MultiHealth Fiber Psyllium Fiber Capsules are a fiber supplement, but your question specifically concerns the calcium ingredient in the data provided. Our assessment: Calcium is a well-studied mineral for bone health, but the available data reveals important safety considerations you must know. The data on calcium from the NIH ODS is complete, but specific clinical trial data for this exact product is not available in the provided information.
How it works
Think of calcium as a master builder for your skeleton. It supports bone density and mineral deposition, which is the process of keeping your bones strong and dense [NIH ODS]. Calcium also acts as a muscle relaxant, supporting muscle relaxation and nerve signaling throughout your body [NIH ODS]. This dual role makes it essential for both your structural framework and your daily movement.
Safety profile
The 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 specifically, the NIH ODS warns that high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. 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]. Crucially, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by checking with your doctor if you take any medications that interact with calcium, such as thyroid medication or antibiotics [NIH ODS]. Do not exceed the recommended dose on the label, as high calcium intakes carry serious risks [NIH ODS]. For most adults, the goal is to get calcium from food first, and only use supplements to fill a verified gap. Given the potential for serious side effects at high levels, we recommend a cautious approach and regular monitoring with your healthcare provider.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Metamucil |
|---|---|
| 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