Iskudhisyada alkoholku waa iskudhisyo dabiici ah oo ka kooban koox hydroxyl (-OH), oo ku xidhan atamka kaarboonka.Caadi ahaan waxa loo isticmaalaa sida dareerayaasha, jeermiska dila, iyo shidaalka.Tusaalooyin ka mid ah xeryahooda aalkolada waa ethanol (laga helo cabbitaannada khamriga ah), methanol (loo isticmaalo shidaal ahaan iyo dareere ahaan), iyo khamriga isopropyl (oo loo isticmaalo sida jeermiska-jeermiska).Iskudhisyada aalkolada ayaa leh adeegsi kala duwan oo kala duwan oo laga isticmaalo warshadaha sida dawooyinka, waxyaalaha la isku qurxiyo, iyo alaabta nadiifinta.