I'm mainly concerned about combatting a tick/bug/spider bite, etc if one should occur. I have Immodium AD already to help with the possibility of that issue. I've read some of the merits of having antibiotics around. I'm scheduled for a checkup about a week before I leave for SA in May. There are no mandatory injections that I'm aware of for the NW Province of SA. Thought I'd ask you guys this question beforehand. If my doc will give me an RX for it, is it a good idea to go ahead and start taking it several days before I leave, or just wait and see if I need it? This may be a stupid question...guess I'm a little bored tonight. Thanks though.