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When deciding malaria prophylaxis, the main considerations are the malaria risk at the destination, how long you’ll be there, and individual medical factors that affect safety and drug choice. Destination risk level guides whether prophylaxis is even needed and which parasite patterns or drug resistances must be addressed. Travel duration influences how long you’ll need to take the medicine and how easy the regimen will be to follow. Traveler-specific contraindications—such as age, pregnancy, liver or kidney issues, psychiatric history, or possible drug interactions—directly determine which drug is safe and appropriate. Personal preferences like cuisine don’t affect malaria risk or how a prophylactic drug works, so they aren’t used in making the decision.