How to Handle Altitude Sickness in Cusco

Arrive in Cusco 2-3 days before any strenuous activities and stay hydrated. Take acetazolamide (Diamox) starting 24 hours before arrival if you're prone to altitude sickness. Rest on your first day and avoid alcohol.

  1. Start prevention before you arrive. Take acetazolamide (Diamox) 125-250mg twice daily starting 24-48 hours before arrival. Consult your doctor first. Avoid alcohol and sleeping pills for 48 hours before travel.
  2. Plan a gradual ascent if possible. Fly into Lima first, then take a connecting flight to Cusco. If driving, stop overnight in Arequipa (7,660 feet) before continuing to Cusco (11,200 feet).
  3. Take it easy on arrival day. Check into your hotel and rest. Avoid heavy meals, alcohol, and any physical exertion. Drink 3-4 liters of water throughout the day.
  4. Recognize the symptoms early. Watch for headache, nausea, fatigue, dizziness, or trouble sleeping within 6-24 hours of arrival. These are normal mild symptoms that usually resolve in 1-3 days.
  5. Treat mild symptoms immediately. Take ibuprofen or acetaminophen for headaches. Drink coca tea (mate de coca) available everywhere in Cusco. Rest and stay hydrated.
  6. Know when to seek medical help. Get immediate medical attention for severe headache, vomiting, confusion, difficulty breathing, or loss of coordination. These indicate serious altitude sickness requiring treatment.
  7. Acclimatize properly before Machu Picchu. Spend at least 2 full days in Cusco before hiking or visiting Machu Picchu. Schedule easier activities like city tours on days 1-2, save strenuous activities for day 3+.
How long does altitude sickness last in Cusco?
Mild symptoms typically resolve within 1-3 days as your body acclimatizes. Most people feel significantly better by day 2 or 3.
Can I take Diamox without a prescription?
No, acetazolamide requires a prescription in most countries. Consult your doctor 2-3 weeks before travel to get it prescribed.
Is coca tea actually effective?
Coca tea provides mild relief for some people and helps with hydration, but it's not a substitute for proper acclimatization and medical prevention.
Should I use supplemental oxygen?
Most people don't need supplemental oxygen for mild altitude sickness. Hotels can provide oxygen concentrators if you have severe symptoms, but see a doctor first.
Can children get altitude sickness in Cusco?
Yes, children are equally susceptible. Watch them closely for symptoms and consult a pediatrician about Diamox before travel.