vit B will increase appetite but i havent heard anyone whose tried it orally and it working, so you`d need the injectable variety.
also as a fellow smoker i gotta say it aint helping youre appetite.
on the plus side youre very lean so every pound of muscle you manage to aquire will show!
+if youre diet was that shite you`d have a lil pot belly
einsteins mind was the key to all things...to understand more than to know.
www.englishmuscle.co.uk
www.extremenutrition.co.uk