Natural Factors Stress-Relax Melatonin 3 mg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that calcium is essential for bone health and nerve function, but for a product like Natural Factors Stress-Relax Melatonin 3 mg, calcium is not the primary active ingredient. Data for this specific product’s key ingredient, melatonin, is not available in the provided data. Our assessment is that while calcium plays a critical role in your body, this supplement is designed for sleep support, not calcium replenishment [NIH ODS].
How it works
Think of calcium as a master regulator for your bones and muscles. It supports bone mineralization by helping deposit minerals into your skeleton, and it promotes neuromuscular relaxation by aiding nerve signaling and muscle relaxation [NIH ODS]. However, this mechanism is not directly related to the intended use of a melatonin-based stress-relax product. Data on how this specific product works is limited to its listed ingredients.
Safety profile
FDA has received a total of 592,059 adverse event reports across all supplement categories, but specific report counts for this product are not available. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer. High blood and urine levels of calcium can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend you verify the intended use of this product. If you need calcium for bone health, this is not the appropriate supplement. For sleep support, data on this specific melatonin product is not available. Always check with your healthcare provider before starting any new supplement, especially if you take medications that interact with calcium [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 90.0 Chewable 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