Allergy Research Group Melatonin 20 mg

Our assessment

The evidence shows that this product contains 20 mg of melatonin per serving, which is a very high dose compared to the typical starting range of 0.5 mg to 5 mg. For most people, this dose is far above what is needed for sleep support and may increase the risk of side effects. Data not available on the specific ingredients or their exact amounts beyond melatonin. We advise caution with this product due to the high potency.

How it works

Melatonin is a hormone that your body naturally produces to regulate your sleep-wake cycle. It works by signaling to your brain that it is time to sleep, helping to reduce the time it takes to fall asleep. At very high doses like 20 mg, it may have a stronger sedative effect but can also disrupt your natural sleep architecture. Data not available on specific mechanisms beyond general melatonin function.

Safety profile

The FDA has received a total of 592,059 adverse event reports across all supplement categories, though specific reports for this exact product and dose are not isolated in the provided data. For the ingredient calcium, which is not in this product, high intakes can cause poor muscle tone, nausea, constipation, and abnormal heart rhythms [NIH ODS]. For melatonin at high doses, common side effects can include daytime drowsiness, headache, dizziness, and nausea. Because the data does not provide specific adverse event counts for melatonin at 20 mg, we must state that the full side effect profile for this specific dose is not fully detailed in the provided information.

Our recommendation

We do not recommend starting with a 20 mg dose of melatonin. For most adults, a dose of 0.5 mg to 5 mg taken 30 to 60 minutes before bed is sufficient and safer. If you are considering this product, consult your doctor first, especially if you have an autoimmune condition, are pregnant or nursing, or take blood pressure or diabetes medications. Start with the lowest effective dose and never exceed the recommended serving on the 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