Explanation:Depressants:Depressants are drugs that inhibit the function of the central nervous system (CNS).Are among the most widely used drugs in the world.These drugs operate by affecting neurons in the CNS and slowing down body functions.Depressants cause a reduction in brain function by lowering the level of awareness of the brain.This leads to symptoms such as drowsiness, relaxation, decreased inhibition, anaesthesia, sleep, coma, and even death.They have the potential to be addictive.Examples: alcohol, benzodiazepines, cannabis, GHB (gamma-hydroxybutyrate), ketamine, opioids (heroin, morphine, codeine).Thus, depressants are medicine that reduces brain functionAdditional InformationUses of depressants:Anxiety disorders, such as social phobia, panic attacks, and generalised anxiety disorder.Depression.Insomnia.Obsessive-compulsive disorder (OCD).