Nausea

Nausea is a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. It often, but not always, precedes vomiting.

In the context of substance usage, nausea and vomiting can occur as a result of stomach irritation through the consumption of materials which it is not used to digesting such as chemical powders or plant matter. Alternatively it may occur as a direct result of how the particular drug effects the brain and is therefore inseparable from the experience itself regardless of the method of consumption. This effect usually occurs at the onset of the experience and dissipates as the peak takes its toll.

See also

• Subjective effects index
• Psychedelics - Subjective effects
• Dissociatives - Subjective effects
• Deliriants - Subjective effects