Nepalese population is pretty hygienic about their day to day activities. Even being a developing country, Nepalese participate in healthy practices and offer similar services to the tourists. There are health institutions of great caliber and pharmaceuticals that offer a great array of medications to address your need. However, it is advised for the travelers to carry portable water purifiers as the water might not always be safe. Be wary of some minor health issues as it is better to be safe than sorry. IT is also wise to consult with a doctor prior to your visit to Nepal.