Oh, and do make sure you're up-to-date with all travel immunisations (Hep A/Typhoid combined is good for India) and any general immunisation boosters (Polio/Tetanus/Diphtheria). And, of course, antimalarials - go straight for atovaquone-proguanil (e.g. Malarone, but the much cheaper generic is equally effective) and by-pass the older ones.