21st Century Melatonin 3 mg
Brand: 21st Century · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that 21st Century Melatonin 3 mg is a dietary supplement, and based on the data provided, the primary ingredient is calcium. Our assessment: for general wellness, the data does not support the use of this product specifically for sleep or any other melatonin-related purpose, as no melatonin-specific data is available. The data confirms that calcium is crucial for bone health, but its role in this product is unclear [NIH ODS].
How it works
Think of calcium as a key structural component for your skeleton. It supports bone density and mineral deposition, and it also helps with neuromuscular relaxation and nerve signaling [NIH ODS]. Without sufficient calcium, your body may pull it from your bones, which can weaken them over time. The data does not provide information on how melatonin works in this specific product.
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements, but specific data for 21st Century Melatonin 3 mg is not available. For calcium, high intakes might increase the risk of heart disease and prostate cancer. 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]. Side effect report counts for this specific product are not available in the data.
Our recommendation
Data not available for a specific recommendation on 21st Century Melatonin 3 mg. If you are considering this product for sleep support, the evidence does not provide any melatonin-related data. For calcium needs, the data suggests you should be cautious with high intakes due to potential risks [NIH ODS]. We recommend consulting your healthcare provider before starting any new supplement, especially to discuss your specific health goals and potential interactions with medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | 21st Century |
|---|---|
| Serving Size | |
| Contents | 200.0 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