benzathine phenoxymethylpenicillin benzathine phenoxymethylpenicillin benzathine phenoxymethylpenicillin (or benzathine penicillin v) is a penicillin. benzathine phenoxymethylpenicillincombination ofphenoxymethylpenicillinantibioticbenzathineextends the time that phenoxymethylpenicillin worksclinical dataatc codej01ce10 (who) identifierscas number5928-84-7 ypubchem cid64725unii3t4emh59zucomptox dashboard (epa)dtxsid80207999 echa infocard100.025.152 (verify) adverse effects further information: penicillin drug reaction