The bad news is such things are simply short-term fixes, if at all. No short cuts in losing weight or gaining muscle, trust me as I've struggled with my weight for years! I'm currently doing pretty well- up a bit after the holidays and quitting smoking, but remaining optimistic and still down quite a bit from where I was 1.5 years ago or so.
The good news is you can both lose weight and build muscle (which boosts you metabolism and helps you to look fabulous) by simply putting in some work. You don't have to live at the gym to get it done, either.
I suggest you check out FitnessBlender (dot) com. Kelli and Daniel are a husband and wife team that put out high quality fitness videos for all levels that you can use for FREE. I have found them to be very sensible, down-to-earth, and trustworthy in their fitness advice. They have lots of cardio videos to help you lose the weight, and tons of strength training videos to build muscle. I use their videos all the time and highly recommend them. I have learned a TON from them and it is only because of them that I began weight training at all. I have definitely seen results using their videos and incorporating strength training into my routine (instead of all cardio).
I do have hand weights of various types, from the little ones to the adjustable ones like they use in the videos. Hubby even made me a plyometric jump box for Xmas for cardio/lower body strength exercises. But don't feel like you can't do their videos without all that equipment. Starting off, even a pair of equally weighted canned goods (one in each hand) will do just fine.
So I'd say you're on the right track, wanting to add muscle to aid in weight loss, but drugs and supplements won't do the trick. Unless you really want to get seriously bulked up, supplements are unnecessary and a generally balanced diet with lots of fruits, veggies, and lean proteins will do the trick.