[Treatment of toxoplasmosis. present knowledge and problems (author's transl)]

Drugs employed in the treatment of toxoplasmosis are reviewed. Until now no drugs able to completely eliminate older parasite cysts in tissue are available. Data in literature indicate as first choice treatment the combination of sulfadiazine (or triple sulfonamides) with pyrimethamine, which act synergistically against trophozoites. The efficacy of other drugs is not fully established. Pregnancy and some clinical situations require alternative treatments as spiramycin. While uncomplicated lymphoglandular forms in immunocompetent host do not require any therapy, vital-organ involvement and infection in immunosuppressed patients are urgent indications for treatment. The lack of availability in Italy of the most active drugs is stressed.