Generally the top colleges which offer M.Pharm accept GPAT score so to get admission in M.Pharm you can apply for the same as candidates with bachelor’s degree in Pharmacy (4 years after 10+2) are eligible to apply.

Also, the registration of GPAT entrance starts in the month of October and exam will be conducted in January.

To check its important dates, eligibility and participating colleges you can check below links and let me know if there is any doubt -

https://pharmacy.careers360.com/articles/gpat-important-dates

https://pharmacy.careers360.com/articles/gpat-eligibility-criteria

https://pharmacy.careers360.com/articles/gpat-participating-institutes

Good Luck!!!