21st Century 600 Calcium Supplement
Brand: 21st Century · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is essential for your bone health, but this specific supplement’s dosing and exact formulation are not fully detailed in the provided data. Calcium supports bone density and mineral deposition, as well as muscle relaxation and nerve signaling [NIH ODS]. However, without a precise milligram amount per serving from the label data, we cannot confirm if this product meets your daily needs.
How it works
Think of calcium as a structural building block for your skeleton and a key signaling molecule for your nerves. It is critical for bone mineralization, helping your body deposit minerals to maintain strong bones, and it supports neuromuscular relaxation, allowing your muscles to properly contract and your nerves to send signals [NIH ODS].
Safety profile
FDA has received 592,059 adverse event reports for this product category. Be aware that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels of calcium in your 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]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by checking your total daily calcium intake from food and other supplements. Because the precise dose per serving is not available in the data, we cannot make a specific dosage recommendation. You should consult your healthcare provider to determine if this supplement is appropriate for you, especially if you take any of the medications listed above. Choose a supplement that clearly states its calcium content per serving [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | 21st Century |
|---|---|
| Serving Size | |
| Contents | 75.0 Tablet(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