Product Label

Natrol Melatonin 5 mg

Brand: Natrol · Form: TABLET [E0155] On Market

Our assessment

The evidence shows that this product is a 5 mg melatonin supplement, but we must be very clear: the available data does not contain specific information about Natrol Melatonin 5 mg or melatonin itself. Data not available for melatonin efficacy or mechanism from the provided sources. Our assessment is based on the calcium data provided, which is the only ingredient with information. For calcium, the data supports its role in bone health, but you should be aware of significant safety concerns at high intakes [NIH ODS].

How it works

Think of calcium as a structural worker and a signaler for your body. It is essential for bone mineralization — helping deposit minerals to keep your skeleton strong and dense. Calcium also supports neuromuscular relaxation, meaning it helps your muscles relax and your nerves send signals properly [NIH ODS].

Safety profile

FDA received 592,059 total adverse event reports across all supplements. For calcium specifically, high intakes are linked to serious risks. High levels of calcium in your 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].

Our recommendation

Data not available for this specific product's effectiveness or safety. Based on the calcium data, do not exceed the recommended dietary allowance without medical supervision. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Consult your doctor before starting any new supplement, especially if you take prescription medications.

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandNatrol
Serving Size
Contents60.0 Tablet(s)
Market StatusOn 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

Original Label

View Full DSLD Label (PDF)

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