Side Effect 3: Nausea
Nausea is the sensation of an urge to vomit. Nausea can be acute and short-lived, or it can be prolonged. When prolonged, it is a debilitating symptom. Nausea can be psychological or physical in origin. Nausea symptoms are frequently difficult for people to describe. Nausea symptoms are not painful but very uncomfortable feelings that are felt in the chest, upper abdomen, or back of the throat. Melatonin when ingested in high doses can result in nausea. People sensitive to the drug experience reactions similar to motion sickness. Taking counter measures for the nausea leads to excessive sleepiness as they both have sedating effects.