Product Label

Douglas Laboratories Melatonin 3 mg

Brand: Douglas Laboratories · Form: CAPSULE [E0159] On Market

Our assessment

The evidence shows that Douglas Laboratories Melatonin 3 mg is a supplement designed to support sleep, but our assessment must be based strictly on the data provided. For this specific product, data on its primary ingredient—calcium—is available. Data on melatonin itself is not available in the provided materials. Therefore, our assessment focuses on the calcium content, noting that calcium is a mineral that supports bone density and muscle relaxation [NIH ODS].

How it works

Think of calcium as a structural builder for your bones and a signal regulator for your nerves and muscles. It works by supporting bone mineralization and mineral deposition to maintain strong bones, and it aids in neuromuscular relaxation, which helps your muscles and nerves function properly [NIH ODS].

Safety profile

Based on the data provided, there are 592,059 total adverse event reports across all supplements in the FDA database [FDA data]. Specific side effects for calcium include constipation, nausea, weight loss, extreme tiredness, and frequent need to urinate at high levels [NIH ODS]. High calcium intakes might also increase the risk of heart disease and prostate cancer. Additionally, calcium can reduce the absorption of medications such as bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS]. Data on side effects or report counts specific to this product or melatonin is not available.

Our recommendation

Data not available for a specific recommendation on melatonin. For the calcium component, ensure you do not exceed recommended intake levels and be aware of potential medication interactions. Consult your healthcare provider before starting this supplement, especially if you take prescription medications or have a history of kidney stones or heart disease [NIH ODS].

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandDouglas Laboratories
Serving Size
Contents60.0 Capsule(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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