Short-term effects produced by heroin include a surge of euphoria and clouded thinking followed by alternately wakeful and drowsy states.
LSD is the most potent drug in the family of psychedelics, and has been the most widely used substance in this class of drugs for many years.
Lortab overdose is more common that one would think, and can occur both in individuals who have been legitimately prescribed the drug, and in individuals who abuse it illegally.
PCP affects the levels of dopamine in the brain, a natural chemical in the body which is responsible for the euphoria and "rush" associated with many abused drugs.