21st Century Melatonin 3 mg
Brand: 21st Century · Form: TABLET [E0155]
Our assessment
The evidence shows that for this product, 21st Century Melatonin 3 mg, the available data is limited. Our assessment must be based solely on the ingredient information provided. While melatonin is commonly used for sleep, the data we have specifically concerns calcium, not melatonin. Therefore, we cannot make a direct assessment of this product’s effectiveness for sleep based on the provided data.
How it works
Based on the data provided, the mechanism discussed is for calcium, not melatonin. Calcium functions as a mineral that supports bone mineralization and neuromuscular relaxation [NIH ODS]. This is unrelated to the intended sleep-promoting effects of melatonin. Data on how melatonin specifically works is not available in the provided information.
Safety profile
The FDA has received 592,059 total adverse event reports across all supplements, but specific report counts for 21st Century Melatonin 3 mg are not available [FDA data]. For calcium, side effects from high levels include 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 interact with medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS]. Side effects specific to melatonin are not available in the provided data.
Our recommendation
Because the data provided does not include information on melatonin’s safety, efficacy, or side effects for this specific product, we cannot offer a confident recommendation for 21st Century Melatonin 3 mg. We advise you to consult with your healthcare provider before starting any new supplement, especially one where key safety and efficacy data is not available. For information on calcium, always discuss potential interactions with your medications with your doctor [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | 21st Century |
|---|---|
| Serving Size | |
| Contents | 200.0 Tablet(s) |
| Market Status | Off 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