Natrol Melatonin 5 mg

Our assessment

The evidence shows that calcium is essential for bone health, but the data does not support a specific benefit from the Natrol Melatonin 5 mg product you asked about. Our assessment is that this product contains melatonin, not calcium, so we will analyze the calcium data you provided for general context. For a supplement like this, you should focus on the ingredients listed on the label, which are not fully provided in the data.

How it works

Think of calcium as a structural building block for your skeleton. It works through bone mineralization, supporting bone density and mineral deposition, and also aids neuromuscular relaxation by supporting muscle relaxation and nerve signaling [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. 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]. Data for side effects specific to this Natrol product is not available.

Our recommendation

Without complete ingredient data for this product, our recommendation is to check the label for the exact form and dose of melatonin. For general calcium guidance, you should be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Always consult your healthcare provider before starting a new supplement.

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