What is atovaquone used to treat?

Atovaquone is primarily used to treat and prevent certain types of pneumonia caused by Pneumocystis jirovecii, particularly in individuals with weakened immune systems, such as those with HIV/AIDS. Additionally, it is effective against infections caused by the protozoan parasites Toxoplasma gondii and Babesia species. Atovaquone is often used in combination with other medications for enhanced efficacy in treating these infections.