Ampicilline eza antibiotique oyo basalelaka mpo na na komibatela na ba infection ya ba bactérie. Yango ebatelaka na ba infection ya ba voies respiratoires, ba infection na ba nzela ya masuba, méningite, ba infection ya salmonelle, mpe endocardite. Bakoki mpe kosalela yango mpo na komibatela na ba infection streptocoque ya groupe B mpo na bana. Baselelaka ya ngo na nzela ya monoko, ya tonga na misunyi ya nzoto, to tonga na mizisa ya nzoto. Esalisaka mpeza te mpo na ba infection kowuta na virus.