Primaquine Adults: 30 mg base, daily

Children: 0.5 mg/kg base up to adult dose daily Begin 1-2 days prior to travel, daily during travel, and for 7 days after leaving

It is one of the most effective medicines for preventing P. vivax and so it is a good choice for travel to places with > 90% P. vivax

Good choice for shorter trips because you only have to take the medicine for 7 days after traveling rather than 4 weeks

Good for last-minute travelers because the drug is started 1-2 days before traveling to an area where malaria transmission occurs

Some people prefer to take a daily medicine