Your cousin has to decide himself to quit drinking, the day he decides take him to a doctor who can prescribe medication or refer to respective specialist.
Also, there is a non-profit organisation known as Alcoholics Anonymous (AA) all over the world including India. If your cousin wants to quit alcoholism, there is help available. In Madurai the address is
Hope Group.
Thirisul Hospital, Near Anna Bus Stand
Madurai, Tamil Nadu 625001
K. Rama Chandran. - 098657 96971
Sat 7.00 pm (Tamil)
Health Tips
Do not try any medication without doctor's prescription or advise. Don't try on any "Nattu Vaidhyam" it may put his life at risk.