Natural Factors Stress-Relax Melatonin 1 mg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that calcium is a critical mineral for bone health, but it must be used with caution. For the specific product Natural Factors Stress-Relax Melatonin 1 mg, calcium is listed as an ingredient, but data on the exact amount per serving is not available. Our assessment is that while calcium supports bone density and nerve function [NIH ODS], you should be aware of the potential risks associated with excessive intake.
How it works
Think of calcium as a structural builder for your bones and a signal messenger for your nerves. It works through bone mineralization to support bone density and mineral deposition, and it also supports neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all products. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Side effects from very high levels include 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 medications such as bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend you do not exceed the RDA for calcium without medical supervision. Since the exact calcium content in this product is not available, you should check the label carefully. If you take any of the medications listed, separate calcium intake by at least two hours to avoid absorption issues [NIH ODS]. For personalized advice, consult your healthcare provider.
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