Since India is a large country, the recommendations for medicines vary depending on the area that you are traveling to.
Area 1 -
For Assam it is Mefloquine one tablet weekly OR Doxycycline 100mg daily OR Malarone one tablet daily
Area 2 -
Low risk in * Southern states of Karnataka, Kerala, Tamil Nadu; southern Andhra Pradesh (including Hyderabad) • Low to no risk in the cities of Delhi and Mumbai (but not the state of Maharashtra, see below) • Low to no risk in the northern states of Haryana, Himachal Pradesh, Jammu and Kashmir, Punjab, Rajasthan (including Jaipur), Sikkim, Uttarakhand and Uttar Pradesh (including Agra). No chemoprophylaxis required. Use insect repellents, mosquito nets and wear long sleeved clothing after dusk
However if patients are travelling overland between these areas they may be passing through areas of greater risk and require prophylaxis.
Most other areas not listed above including Goa, Gujarat, Maharashtra and the Andaman and Nicobar Islands Proguanil two tablets daily PLUS Chloroquine two tablets weekly