First line drug for prophylaxis of pneumocystosis is
TMP-SMX
Dapsone
Pyrimethamine
Atovaquone
First line drug for prophylaxis of pneumocystosis is TMP-SMX (trimethoprim-sulfamethoxazole).Dapsone, Pyrimethamine, Atovaquone, Leucovorin, Pentamidine are second line drugs
G.I.T