Natrol Melatonin 5 mg Fast Dissolve Strawberry Natural Flavor

Our assessment

The evidence shows that melatonin is a well-studied supplement for sleep support, but the data provided here is for calcium, not melatonin. For the specific product you asked about — Natrol Melatonin 5 mg Fast Dissolve Strawberry — the data on calcium from the NIH ODS and FDA does not apply. This means we cannot make a direct assessment for this melatonin product based on the information given. Data not available for melatonin specifically in this dataset.

How it works

Based on the data we have, which is for calcium, the mechanism involves bone mineralization: it supports bone density and mineral deposition. It also supports neuromuscular relaxation, which aids muscle relaxation and nerve signaling [NIH ODS]. For melatonin, the typical mechanism involves regulating the sleep-wake cycle, but that information is not present in the data provided.

Safety profile

The FDA received a total of 592,059 adverse event reports across all products. For calcium specifically, 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]. Some research also suggests high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Report counts for these specific side effects are not available in the data.

Our recommendation

Data not available for this specific Natrol Melatonin product based on the provided information. For calcium, you should be aware that it can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Given the mismatch between the product and the data, our recommendation is to consult your healthcare provider for guidance on melatonin use. Data not available to make a specific recommendation for this product.

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