Quick Answer
Acetazolamide is effective for preventing altitude sickness, particularly high-altitude cerebral edema (HACE) and high-altitude pulmonary edema (HAPE), at doses of 250-500mg taken 24-48 hours before ascent.
Understanding Altitude Sickness Prevention
Acetazolamide, a carbonic anhydrase inhibitor, has been used to prevent altitude sickness for decades. The medication works by reducing red blood cell production, which decreases the amount of oxygen required by the body. This adaptation process allows the body to better cope with lower oxygen levels at high elevations.
Dosing and Administration
The recommended dose for altitude sickness prevention is 250mg taken once daily, starting 24-48 hours before ascent and continuing for 2-3 days at high altitude. A higher dose of 500mg, taken twice daily, may be more effective but carries a higher risk of side effects. To minimize side effects, it’s recommended to start with a lower dose and gradually increase as needed.
Side Effects and Interactions
Common side effects of acetazolamide include nausea, headache, and dizziness. In rare cases, more severe side effects such as kidney stones, Stevens-Johnson syndrome, and aplastic anemia may occur. Patients with certain medical conditions, such as kidney disease or glaucoma, may require modified dosing or alternative treatments. It’s essential to consult a healthcare professional before taking acetazolamide for altitude sickness prevention.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.