Altitude sickness, also known as mountain sickness, occurs when you ascend to high altitudes too quickly and the lack of oxygen causes you to feel sick, dizzy and short of breath. If you are planning on travelling to high altitudes above 2,500m you can combat the sickness with Acetazolamide tablets.
This medicine works by speeding up the processes your body goes through to acclimatise to high altitude. It might be recommended if you have had Acute Mountain sickness( AMS) before or if a gradual ascent is not possible.
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