Natrol Melatonin 1 mg

Our assessment

The evidence shows that calcium is essential for bone health, but the data does not support the use of Natrol Melatonin 1 mg for this purpose, as the product label indicates melatonin, not calcium. For calcium supplementation specifically, the data confirms it supports bone mineralization and neuromuscular relaxation [NIH ODS]. You should be aware that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS].

How it works

Think of calcium as a structural building block — it supports bone density and mineral deposition, and it also helps your muscles relax and your nerves signal properly [NIH ODS]. For the Natrol Melatonin 1 mg product you asked about, data is not available on how melatonin works in this specific formulation.

Safety profile

Data not available for Natrol Melatonin 1 mg specifically. However, for the ingredient calcium, high levels 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]. The FDA received a total of 592,059 adverse event reports across all supplements, but specific report counts for melatonin or this product are not available [FDA data].

Our recommendation

For calcium, start with food sources first. If you supplement, be aware that calcium can reduce the absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. For the Natrol Melatonin 1 mg product, data is not available to support a recommendation. Consult your healthcare provider before starting any 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