what are the different ways stimulants can enter the body? & is it possbile for certain stimulants to be injected (like by a needle)into the body? & if so what kind of stimulants are injected?
http://www.google.com/search?q=injected+stimulants&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA
There may be some answers in here.