Which of the following drug has gametocidal action all species of Plasmodium?
Primaquine
Chloroquine
Quinine
None of these
Primaquine: It is gameticidal against all species of Plasmodium i.e. vivax, ovale, falciparum, malariae. Hence, it is DOC to prevent transmission of malaria. It is also used for Radical cure of vivax and ovale malaria as it can kill hypnozoites as well. Chloroquine and Quinine: Gameticidal against P. vivax species only