Metamucil MultiHealth Fiber Original Coarse
Brand: Metamucil · Form: POWDER [E0162] On Market
Our assessment
The evidence shows that Metamucil MultiHealth Fiber, primarily a source of psyllium fiber, is a well-established product for digestive health. However, the specific data provided focuses on calcium, which is also listed as an ingredient. Our assessment: this product can be a useful tool for supporting regularity, but the calcium content requires careful attention to your total daily intake from all sources [NIH ODS].
How it works
Think of the psyllium fiber in this product as a gentle bulk-forming agent that helps move waste through your digestive tract. The added calcium supports bone mineralization and neuromuscular relaxation, acting as a master regulator for bone density and muscle signaling [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports for products in this category, though this number includes all reports, not just those for Metamucil specifically [FDA data]. For the calcium component, safety concerns include that high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Data not available for a specific, evidence-based dosage recommendation for Metamucil MultiHealth Fiber. You should follow the label directions for the fiber component. For the calcium, be cautious not to exceed the RDA from all supplements combined. If you take any medications, especially thyroid medication or antibiotics, take Metamucil at least two hours apart from them to avoid absorption interference [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Metamucil |
|---|---|
| Serving Size | |
| Contents | 29.0 oz. 1.8 lbs 822.0 g 114.0 Dose(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