Muscle twitching

Template:Proofread Muscle spasms can be described as an experience where one undergoes a sudden, uncomfortable, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.

Psychoactive substances

Compounds within our psychoactive substance index which may cause this effect include:

See also

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