21st Century Advanced Probiotic
Brand: 21st Century · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that 21st Century Advanced Probiotic contains the mineral calcium. Calcium is essential for bone health, but the data does not provide specific information on the probiotic strains or doses in this product. For calcium’s role, the data confirms it supports bone mineralization and neuromuscular relaxation [NIH ODS].
How it works
Think of calcium as a key structural component for your bones and teeth. It also plays a critical role in nerve signaling and muscle relaxation, helping your body function smoothly [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements, but specific report counts for this product are not available. High calcium intakes might increase the risk of heart disease and prostate cancer. Side effects from very high levels include poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can reduce absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Because specific probiotic strains and doses are not provided in the data, we cannot make a targeted recommendation for this product. If you are taking calcium, ensure you do not exceed the tolerable upper intake level and discuss any medication interactions with your doctor. Data not available for the probiotic components of this product.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | 21st Century |
|---|---|
| Serving Size | |
| Contents | 60.0 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