No vaccination is currently required for entry into Bhutan. However it is advisable to have tetanus, typhoid and hepatitis A shots.
Anti-malarial medication is recommended for all travelers to Bhutan who are visiting rural areas in the districts that border India. Travelers who plan to visit Bhutan should consult a physician about high-altitude travel. After a brief period of acclimatization, most people do not suffer from altitude sickness; but elderly travelers or those with high blood pressure or heart conditions need to exercise caution at high altitudes.
Medical help and medicine are free in all hospitals. Pharmacies which run without prescription are also available in major towns. Small dose for motion sickness, headache, stomach, indigestion and insect repellent (during summer) could be useful to bring.