Alkalinization of urine is done in
Alkalinization of urine is done to treat acidic drug poisoning 
Ex:- Aspirin, Barbiturates, Methotrexate, Penicillin.
Acidification of urine is done to treat basic drug poisoning 
Ex: - Amphetamine, Morphine, Atropine, Quinine.
Aspirin
Atropine
Amphetamine
Morphine