We had a bottle of vallergan for DS.. it's just an antihistamine that she gave us for allergies.. and dr recommended vallergan over phenergen cos it wasn't as strong. Bit confused now that I google it tho

It didn't seem to have any more sedative effect on him than any other antihistamine type thing (like dimetapp or something) *shrug*

ETA: DS was 3 when we got this.. it was when we were in the throes of working out he had asthma.. so we haven't used this for babies or anything.