Any anabolic androgenic steroid will lower your voice, but what you should consider is that steroids will also fuse your growth plates, thus stunting your growth. Ask yourself if it is worth it. I think you should give it another year or two and allow your body to mature naturally. I have seen this before and its not worth it to have a deeoer voice and be 6' shorter than you would be if you leave it to mother nature. Look at Franco Columbo if you need an example. The guy was a beast, but just slightly over 5 feet tall. All of his girlfriends ended up in bed with Arnold S. Dont let that be you friend.