Are there any antibiotics that act on protozoa and kills it?

Amoebiasis. Giardiasis. African Sleeping Sickness. Leishmaniasis. Toxoplasmosis. Malaria. Babesiosis. Trichomoniasis. All of the above are protozoal diseases in humans. At least some of them have treatments, ergo the answer is YES. read more

Metronidazol kills Trichomonas, causing a STD, also Entamoeba hystolitica, causing amoebic dysentry, both single celled protozoa. read more

Antimalarial drugs: It's a little bit technical - but basically the medicine acts as a 'poison' for the malaria parasite. Plasmodium species have to digest hemoglobin (inside the red blood cell) to survive - but the heme molecule can be toxic when released. read more

First of all, let’s talk a little bit about terminology. By definition, an antibiotic consists of a molecule able to treat bacterial infection, while an anti-parasitic is used to treat parasitic infections. read more