my chicken has a large wound on her side/back and so i went to the feed store and got some penicillin but then relized i had bought PRO-PEN-G (penicillin G Procaine injectable) and i thought i had read somewhere that anything ending in caine was bad/toxic to chickens. it that correct or am i mixing this up with something else. is the pro-pen-g ok to give her? and if it is does anyone know the dosage for a 2 lb chicken?