If your making gains rite now you should be fine,don't worry about it.
Most of them are stimulants.Most of them like adderal will do the same thing as clen/eca and boost your burning.Just eat more to counter actif you are having issues.500 to 750 more cals than you need a day.
I know the hunger supression can be a pain.If you can't eat that much You can spike your hunger by eating fast digesting carbs.White rice,potatos,ect...
Option b if that dosen't work... you can do what I have done.Research the sweetner though,make sure it's the right thing for you.Have one drink with aspartame every month or so.I was a hard gainer and it works.Not a very healthy sweetner but it dose spike hunger.I do NOT suggest aspartame more than once a month because it is a very synthetic sweetner and is harmfull if you have it everyday.
