In case of emergency you need to get evacuated by helicopter to Kathmandu, you need to take proper care of your health. Anyways, you will find small clinics along the trek, one at Manang and other at Jomsom (these clinics only check minor sickness). However, you need to bring your medicine (if any) and a first aid box will be provided by Nepal Sanctuary Treks, also your guide will be trained for first aid in case of emergency.
For further enquiries you can contact Nepal Sanctuary Treks at: