Melatonin is a naturally occurring hormone that controls human sleep. Melatonin is available over the counter and is the most studied dietary sleep aid. Melatonin may help a person fall asleep faster and possibly remain asleep longer. There are no consistent standards regarding the dose of melatonin, but research suggests that 0.3 mg may be the most effective dosage for people using it as a sleep aid. Intensity of side effects may be dose related.
Central Nervous System Side Effects
Melatonin may cause some people to experience daytime sleepiness. The time when Melatonin is taken as well as the amount may influence the degree of this side effect. However, higher doses may keep some people awake.
People taking melatonin as a sleep aid may experience severe headaches. This adverse reaction may be significant enough to cause people not to continue taking melatonin. It has been reported that in some people melatonin caused confusion and mental impairment. Some people reported experiencing nightmares while taking a melatonin sleep aid.
Melatonin may induce sleep walking in some people. Dizziness may also be experienced. People should take melatonin only before going to bed and should not partake in any activities that require alertness.
Gastrointestinal Side Effects
Melatonin may cause some people to experience abdominal discomfort. Taking the medication with food or after eating may help alleviate this adverse side effect.
Warnings
Melatonin supplements may be derived from animal sources. Dr. Brent A. Bauer, an internist with the Mayo Clinic, advises that people should use supplements made from artificial sources because animal sources may contain viruses or other contaminants.
Notify your physician if you begin to take a melatonin sleep aid. Melatonin may interact with other medications such as blood thinners, diabetes medication, birth control pills and immunosuppressants.
Although melatonin is a naturally occurring substance in the human body, supplements may contain ingredients that may trigger sensitivity responses in some people. If you suspect an allergic response to melatonin (for example rash, itching, difficulty swallowing or breathing) stop taking the melatonin sleep aid and see your physician.
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