Advanced Naturals FiberMax Caps
Brand: Advanced Naturals · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that the primary ingredient in Advanced Naturals FiberMax Caps is calcium, a mineral essential for bone health. However, the data on calcium is nuanced and carries significant risks that you need to understand before supplementing. Our assessment is that you should approach this product with caution and prioritize getting calcium from food sources [NIH ODS].
How it works
Calcium acts as a master regulator for your body. It supports bone mineralization, meaning it helps deposit minerals into your skeleton to maintain bone density. It also plays a key role in neuromuscular relaxation, helping your muscles relax and your nerves send signals properly [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements, though specific reports for this product are not available. For calcium specifically, safety data shows significant risks: high intakes might increase the risk of heart disease and prostate cancer. Very high levels 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] [FDA data]. Additionally, calcium can 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 dosage for this product. Our recommendation: do not start this supplement without first consulting your doctor. Have your blood calcium levels checked and review all your medications for potential interactions. If you do take calcium, take it separately from other medications by at least two hours, and prioritize food sources like dairy or fortified plant milks to minimize risks [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Advanced Naturals |
|---|---|
| Serving Size | |
| Contents | 200.0 Vegetable 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