Product Label

Sundown Naturals Melatonin 3 mg

Brand: Sundown Naturals · Form: TABLET [E0155]

Our assessment

The evidence shows that melatonin is a popular supplement for sleep support, but the data for Sundown Naturals Melatonin 3 mg is limited. For the ingredient calcium, which is not the primary ingredient in this product, we have extensive data from the NIH Office of Dietary Supplements. Our assessment: you should understand the safety and interaction profile of calcium, as it may be present in other supplements you take, but for this specific melatonin product, detailed clinical study data is not available in the provided materials.

How it works

Think of calcium as a structural building block for your bones and a signaling molecule for your muscles. It supports bone mineralization and bone density, and it helps your muscles relax and nerves communicate properly [NIH ODS]. For the melatonin in this product, the specific mechanism of action is not detailed in the provided data, though melatonin is naturally involved in regulating your sleep-wake cycle.

Safety profile

Regarding safety, the FDA has received a total of 592,059 adverse event reports across all supplements, but specific reports for Sundown Naturals Melatonin 3 mg are not available in the data provided. For calcium, which is a separate ingredient, high intake can cause serious side effects. These include poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Also, calcium can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Our recommendation: Since no specific clinical studies or dosing guidelines for this melatonin product are provided, you should consult your healthcare provider before starting it, especially if you take any medications that interact with calcium, as listed above. For general calcium intake, follow the RDA from food sources first. Data for long-term safety and efficacy of this specific melatonin product is not available in the provided information, so a cautious approach is best.

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandSundown Naturals
Serving Size
Contents240.0 Tablet(s)
Market StatusOff 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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