There are fewer regulations, regarding health in India, applicable to foreign tourists. These regulations are more of the nature of prevention than anything else.
Foreign tourists should carry their Yellow Fever Vaccination Certificate conforming to International Health Regulation, if they originate or are transiting through Yellow Fever endemic countries.
Malaria risk exists throughout the year in the whole country excluding parts of the states of Himachal Pradesh, Jammu & Kashmir and Sikkim. No certificate is required, but a course of anti malaria pills is recommended for all travellers to India. Protect yourself from insects by remaining in well-screened areas, using repellents (applied sparingly at 4 hour intervals), and wearing long sleeved shirts and long pants from dusk through dawn.
Travelers proceeding to countries that impose restrictions for arrivals from India or from an infected area in India on account of cholera are required to possess a certificate. In any case, an inoculation against cholera is recommended.
General Health Tips
Drink only bottled or boiled water, or carbonated (bubbly) drinks in cans or bottles. Avoid tap water, fountain drinks, and ice cubes. If this is not possible, make water safer by both filtering through an “absolute 1 micron or less” filter AND adding iodine tablets to the filtered water. “Absolute 1 micron filters” are found in camping/outdoor supply stores.
Buy bottled water from respectable outlets to guard against stomach upsets. Some of the better known brands are Bisleri, Kinley, Aqua Fina, Himalaya etc. Make sure that the seal of the bottle is intact.
Watch out for spicy dishes, especially at the outset of your tour. Avoid eating food from road side stalls. Eat unpeeled fruits and avoid fresh salads, especially in small hotels. If you are forced to eat food at some place that you have doubts about, make sure the food is served hot.
Always use an insect repellent if you find yourself in a mosquito-prone area. But remember, not every place is mosquito-infested and low temperatures in winters (when most tourists come to India) kill most bugs in the northern plains and hills.
If traveling in scorching heat, remember to drink enough water, use hats, sunglasses & UV lotions. Do not venture out in the mid day sun.
Pharmacies or chemists are available in every little town and village and you can buy medication. In case you need to see a doctor for a specific condition, ask for help from your hotel (most have doctors on call) or your tour operator. The cost of visiting a doctor is fairly low(less than a dollar) compared to western countries.
In India, most modern medicines are available over the counters in drugstores, but it is wise to travel with a reserve stock. If any prescription drugs are required, bring enough for the duration of the trip. It is advisable that you carry a small health kit which should include remedy for upset stomachs, some antiseptic cream, mosquito repellant cream, suntan/uv lotion, etc.
Caution: This document is not a complete medical guide for travelers to this region. Consult with your doctor for specific information related to your needs and your medical history; recommendations may differ for pregnant women, young children, and persons who have chronic medical conditions.