Toxoplasmosis, an infection caused by the obligate intracellular parasite Toxoplasma gondii, represents a significant global health concern, particularly for immunocompromised individuals. This study aimed to evaluate the therapeutic effects of silicon dioxide nanoparticles (SiO2-NPs) against both acute (T. gondii RH strain) and chronic (T. gondii PRU strain) infections in BALB/c mice. In the acute infection model, mice (n = 40) were infected with 10