If you haven’t already done so, please make sure that your standard vaccinations are up to date. The university health services is typically the best (and cheapest) place to get your shots. We recommend for Hep A, Hep B, and Typhoid in addition to tetanus, MMR, etc. (http://wwwnc.cdc.gov/travel/destinations/traveler/none/india).
India is a malaria-watch country and we strongly recommend taking anti-malaria pills during your stay in India. Common anti-malarials are malarone, doxycycline and mefloquine, with side effects ranging from sun-sensitivity to bad dreams. While many people live in India for long periods without catching Malaria, it’s an unpleasant condition to get so you might as well try to avoid it.