MCNAUGHTON'S CASE AND LAW:

In 1843, McNaughton shot and  killed Sir Robert Peel's secretary Edward -Drymmond.  It was  shown  that McNaughton suffered from a number of  delusions of persecution and  that killing had been inspired by  these delusions, and the judge directed the  jury  to find him not guilty. After lot of  a debate in  the House of Lords  the famous McNaughton's  Rules were formulated  in England. India also followed the rules dealing with criminal responsibility. McNaughton's rules have been adopted  by  section 84 of  Indian Penal Code of  1860 states that "Nothing is an offense which is done by  a  person who, at the time of  doing it by  reason of unsoundness of mind, was incapable of  knowing the nature of  the act or that what he is doing was either wrong or contrary  to  law." 

NARCOTIC DRUGS AND PSYCHOTROPIC SUBSTANCE ACT 1985 (NDPSA):

Drug dependence  in  India is dealt in law under Narcotic drugs  and  psychotropic substance Act. The  act, was enacted on 16th September, 1985. It replaces the earlier Opium Acts and Dangerous Drugs Act. The Act  includes Narcotic drugs like opium, poppy, heroin, cannabis, cocaine, coco and all related synthetic 'drugs' and psychotropic substances e.g. major and minor tranquilizers, barbiturates, etc. In this Act  if  a person produces, possesses, sells, transports, imports or uses any narcotic drugs or psychotropic substances, he or she shall be punishable with rigorous imprisonment for not less than 10 years with a fine of  not less than 1 lakh rupees. For repeated offence, the punishment is rigorous imprisonment for not  less than 15 years and  a fine of  not less than 1.5 lakhs.