The import of drugs which are prohibited may be permitted for personal use in small quantities subject to the following conditions:
The drugs shall form part of a passenger's baggage and shall be the property of, and be intended for, the exclusive personal use of the passenger,
The drugs shall be declared to the Customs authorities if they direct to do so
The quantity of any single such imported drug shall not exceed one hundred average doses:
The licensing authority may in an exceptional case sanction the import of a larger quantity.
Any drug, imported for personal use but not forming part of personal baggage, may be allowed to be imported subject to the following conditions-
the licensing authority, on an application made to it in Form 12-A is satisfied that the drug is for bona fide personal use
the quantity to be imported is reasonable in the opinion of the licensing authority and is covered by prescription from a registered medical practitioner
the licensing authority grants a permit in respect of the said drug in Form 12-B.
For Form 12-A and Form 12-B see http://cdsco.nic.in/