Natrol Liquid Melatonin 1 mg Berry Natural Flavor

Our assessment

Our assessment: The evidence shows that this product contains melatonin, but the specific data provided focuses on calcium, not melatonin. For the ingredient calcium, the data indicates it is a mineral that supports bone density and nerve signaling [NIH ODS]. However, we cannot make a specific assessment about the Natrol Liquid Melatonin 1 mg product based on the data available, as no direct data on melatonin was provided for this supplement.

How it works

The data provided describes how calcium functions in the body. Think of calcium as a key structural component — it supports bone mineralization and helps with neuromuscular relaxation, which is essential for muscle relaxation and nerve signaling [NIH ODS]. No mechanism of action data is provided for melatonin itself.

Safety profile

Data not available for melatonin-specific side effects from the provided FDA data. For the ingredient calcium, high intakes might increase the risk of heart disease and prostate cancer, and 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 total FDA adverse event reports for all supplements in the database is 592,059, but this number is not broken down by product or ingredient [FDA data].

Our recommendation

Our recommendation: Because the provided data does not include specific information about melatonin, we cannot make a confident recommendation for this Natrol product. If you are considering using this supplement, consult your healthcare provider. For calcium, if you take supplements, be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Always discuss any new supplement with your pharmacist or doctor.

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