I would suggest you don't bother with an anti-malarial unless you're in a high risk area for an extended period. I was in East Africa for 3 years and got it twice but if I'd have been more careful there's a chance I wouldn't have had it at all. Wear long sleeve shirts, light coloured clothing and put some anti-mossie repellant on. All much more preferable than the drugs particularly larium which I understand has some undesirable side effects.