Gentamicin Garamycin Kanamycin Kantrex Neomycin Neo-Fradin[5] Netilmicin Netromycin Tobramycin Nebcin Paromomycin Humatin Streptomycin Tuberculosis Spectinomycin(Bs) Trobicin Gonorrhea Ansamycins Geldanamycin Experimental, as antitumor antibiotics Block DNA transcription, either via inhibiting DNA-dependent RNA polymerase by binding to the β-subunit Herbimycin Rifaximin Xifaxan Traveler's diarrhea caused by E. coli Carbacephem Loracarbef Lorabid Discontinued Prevents bacterial cell division by inhibiting cell wall synthesis.