You should visit your doctor and dentist for a check-up prior to taking your trip and seek specific advice. The following is a rough and basic guide for immunization. Upon advance notice, your doctor will be able to administer all the vaccinations mentioned below.
Nepal 360 Experience
Manaslu Trek
Annapurna Circuit and Tilicho Lake
The mystical kingdom of Mustang
Dhaulagiri Circuit Trek
Langtang Tamang Heritage Trail