Atovaquone with proguanil combination for the treatment of protozoal infections.

The invention relates to combinations of atovaquone and proguanil USE IN THE TREATMENT AND INFECTIONS Parasitic PROFILASIS, SUCH AS INFECTION Parasitic Protozoa, BY EJ. MALARIA AND toxoplasmosis, and infections caused by P. carinii and their use in the manufacture of medicaments for the treatment and / or prophylaxis of such infections. Combinations can be conveniently administered in a pharmaceutical formulation INDIVIDUAL. PREFERABLY, atovaquone and proguanil are administered in a potentiating ratio so that they act in synergy.