Anyone travelling rapidly to high altitudes, particularly above 2,500 metres, may benefit from altitude sickness medication. This includes people going trekking, hiking, skiing, mountaineering, climbing, or working at altitude. Those who have previously experienced altitude sickness are often at higher risk.

The most commonly prescribed medication for altitude sickness prevention is acetazolamide (often known by the brand name Diamox). Acetazolamide helps your body adapt to lower oxygen levels at high altitude and can reduce the risk of developing altitude sickness symptoms.

Yes. Following a clinical assessment, eligible travellers may be prescribed acetazolamide through our pharmacy altitude sickness service. Our clinician will review your medical history, travel plans, and current medications before treatment is supplied.

Acetazolamide is typically started one to two days before ascending to high altitude and continued while you remain at altitude. The exact timing and dosage will depend on your itinerary and individual circumstances.

No. Altitude sickness medication significantly reduces the risk and severity of symptoms, but no medication can completely eliminate the risk. Gradual ascent, adequate hydration, and proper acclimatisation remain important.

Studies have shown that acetazolamide can significantly reduce the likelihood of developing Acute Mountain Sickness when taken correctly. It is widely recommended for travellers ascending rapidly to high altitude.

Common side effects of acetazolamide include tingling in the fingers, toes, or face, increased urination, altered taste, and mild nausea. Serious side effects are uncommon and will be discussed during your assessment.

If you develop symptoms such as headache, nausea, dizziness, or fatigue, you should avoid further ascent and rest. Severe symptoms require immediate descent and urgent medical attention. We provide advice on recognising warning signs before you travel.

Altitude sickness can occur above 2,500 metres, although symptoms can develop at lower altitudes in some people. The risk increases as altitude rises and when ascent is rapid.

Common side effects of acetazolamide include tingling in the fingers, toes, or face, increased urination, altered taste, and mild nausea. Serious side effects are uncommon and will be discussed during your assessment.