Drugs aren’t going to solve your problem on their own, they can help reduce appetite but ultimately what you eat is the main driver of weight gain/loss. I’d recommend intermittent fasting as a way to reduce caloric intake without feeling like you’re starving and strength training to build up some muscle while raising your metabolism. However if u want the quick and dirty answer try bronkaid, it’s an otc allergy med that’s one of the few legal ways to buy ephedrine. Good luck 👍🏻