Express dissatisfaction with the side effects of a certain drug prescribed by travel doctors and suggest it might not be much different from another controversial drug. Mention the dangers of another drug and argue that raising awareness about Malaria and its symptoms is more important than taking medication to prevent the disease.
Stupid travel doctors keep telling people to take this drug. I tried it once and the side effects were bad, inflammation, upset stomach and depression. Never took it again. Doc's kept telling me to take it when traveling.  I don't think it is much different than cloraquine. Doxy is another one that causes cancer, stupid doc's tell you to take that too. 
Malaria is a disease that can be cured in a few days, the important part is to be aware of the symptoms and take the drugs when you get a high fever.