I think the drinking and smoking is not done by mistake or unconsciously. Well Both are injurious to health as written on them. As far as concern about the hairfall it may or maynot be a factor for the condition. But online platform wont able to give any remedy, as you haven't mentioned the names of the medicines. Best way is to consult with your prescribed doctor. Or better to stop till your next consulation day comes.

Thanks for raising Q on authentic platform. Though it has its consequences n those u know better, at your age committed approach will serve longer. Rest u can reach out to ur treating dr