in·tra·ve·nous 
/ˌɪntrəˈvi:nəs/ adjective
always used before a noun /ˌɪntrəˈvi:nəs/ adjective : through, in, or into a vein : entering the body through a vein
▪ intravenous feedings/drugs ▪ an intravenous needle
▪ intravenous feedings/drugs ▪ an intravenous needle
— in·tra·ve·nous·ly adverb
▪ She is being given the medication intravenously.
▪ She is being given the medication intravenously.
