Do the side effects last for as long as you're on the AD or do they subside? I keep yawning, have a weird full feeling in my throat and feel tired and light headed. I don't think I can cope with this for any length of time. I don't really feel much better either, although I have only cried twice in the last 4 days (there's time yet). I was also hoping my concentration would come back but suspect it might get worse. I have a really concentration heavy job. Any advice would be great.