Puppy got bitten. Medicines or overdose?

My newly adopted stray puppy got bitten by an stray dog night before yesterday night on his throat it bleeded badly. For a first aid I wiped the wound with savlon and applied soframycin and mixed tablets of vovran and doxy in its milk. Next day I took it to the doctor where he got 3 injections i.e rabies tatnus and some pain killer. Doctor suggested to keep mixing those tablets in his milk therefore today morning I mixed half half of both tablets in his milk after cleaning it by savlon and bathing with warm water he drank all the milk and then slept But I don't know why he z sleeping since then and when i try to wake him up he z behaving like drunk human bumping here n there walking closed eyes and then again goes to sleep after a bit. What z wrong with him? Is it the impact of medicines or overdose? Plzz suggest.