Some medicines and medical conditions can make the body overheat, especially during hot and humid weather. When the body overheats, heat-related illness can cause death if not treated. Almost all psychotropic medications except benzodiazepines (e.g. anti-anxiety drugs, sedatives) are among medications that decrease the body's response to heat. Alcohol, narcotics and street drugs can also affect heat tolerance. Read this brochure and check with your doctor or pharmacist about your medications to stay safe during hot weather.