NOW Melatonin 5 mg
Brand: NOW · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that melatonin can be a helpful short-term sleep aid, but the data on this specific NOW 5 mg product is limited. While the active ingredient is well-studied, the exact formulation of this brand has not been evaluated by the FDA for safety or efficacy. Our assessment is that 5 mg is a moderate dose, but you should start low and go slow.
How it works
Melatonin is a master regulator of your sleep-wake cycle. It signals to your brain that it is time to sleep, helping you fall asleep faster and improve sleep quality. It works by binding to receptors in the brain that promote relaxation and drowsiness. Think of it as a natural "sleep switch" for your body’s internal clock.
Safety profile
Data not available for side effects specific to this NOW Melatonin 5 mg product. The FDA has received a total of 592,059 adverse event reports across all dietary supplements, but a breakdown for melatonin alone is not provided. General safety data shows that melatonin is typically safe for short-term use, but side effects can include dizziness, headache, and morning drowsiness. High calcium intake from other supplements can cause poor muscle tone, constipation, and abnormal heart rhythms [NIH ODS]. Do not take this product with calcium supplements without medical advice.
Our recommendation
Start with 1 mg or 2.5 mg if you are new to melatonin, not 5 mg. Take it 30–60 minutes before bed. Do not drive after taking it. Use it for no more than a few weeks without consulting your doctor. Avoid combining with calcium supplements due to potential interactions [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 180.0 Veg Capsule(s) |
| Market Status | On 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