Universal Nutrition / Universal Naturals Melatonin Formula 5mg

Our assessment

The evidence shows that melatonin is a well-studied supplement for sleep support, but the data provided here is limited. Our assessment is that a 5 mg dose, as in the Universal Nutrition product, is a common starting point for many adults. However, without specific data on this exact formulation, we must rely on general data for melatonin. The National Institutes of Health Office of Dietary Supplements confirms that melatonin supplements are typically used for jet lag, shift work, and sleep-wake cycle disorders [NIH ODS].

How it works

Think of melatonin as your body's natural sleep signal. Your brain produces it in response to darkness, helping to regulate your circadian rhythm—your internal 24-hour clock [NIH ODS]. Taking a 5 mg melatonin supplement like this one can help signal to your body that it is time to sleep, which is particularly useful when your natural production is disrupted, such as during travel or shift work [NIH ODS].

Safety profile

Data not available for side effects specific to this product. General FDA data on melatonin shows that while it is generally safe for short-term use, the specific adverse event report count for this product is not provided [FDA data]. Common general concerns include drowsiness the next day, headaches, and dizziness, but specific report counts for this exact formulation are not available in the provided data [FDA data].

Our recommendation

Start with the lowest effective dose, which may be lower than 5 mg for some people. Since data on this specific product is limited, we recommend consulting your healthcare provider before beginning any new supplement, especially if you have a medical condition or take other medications [NIH ODS]. For short-term use, such as for jet lag, a 5 mg dose is within the common range, but for general sleep issues, a lower dose (0.5-3 mg) may be more appropriate. Data not available on long-term safety [NIH ODS].

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