I recently visited my psychiatrist’s office, where one of the nurses gave me a pamphlet about psychiatric medication and how it impacts the heat response.
Basically, if you’re taking medication for your mental illness/disorder, there’s a good chance it can decrease your body’s response to heat and may make it easier for you to suffer heat stroke and/or heat exhaustion. (Recreational drugs and narcotic pain medicines do this as well.)
If it’s summer for you and you’re taking medication, be extra careful! Stay hydrated and get help if you feel signs of heat stroke.
tl;dr: be extra careful in the heat if you’re taking meds