How to handle altitude sickness in Cusco

To prevent altitude sickness in Cusco, stay hydrated, avoid heavy meals for the first 48 hours, and prioritize rest upon arrival. If symptoms persist, take acetazolamide (Diamox) or consult a doctor immediately, as the city sits at a staggering 3,400 meters.

  1. Acclimatize before arrival. If possible, spend 24 to 48 hours in the Sacred Valley (Pisac or Urubamba) at a lower altitude (approx. 2,800m) before heading straight to Cusco city.
  2. Stay hydrated with electrolytes. Drink at least 3 liters of water per day. Plain water isn't enough; add electrolyte powders to replenish the salts lost from the increased respiratory rate at high altitude.
  3. Eat light. Digestion slows down at high altitude. Stick to simple carbohydrates like soups, rice, and potatoes for your first two days to avoid bloating and nausea.
  4. Use local remedies. Drink coca leaf tea (mate de coca) offered by most hotels. It is a mild stimulant that helps the body adjust to the thin air. Do not consume large amounts of caffeine or alcohol for the first 72 hours.
  5. Recognize when to seek help. Mild headaches and fatigue are normal. However, if you experience confusion, severe shortness of breath at rest, or coughing up pink fluid, descend to a lower altitude immediately and go to a hospital.
Does coca tea actually work?
It helps with the mild symptoms and provides a gentle energy boost, but it is not a cure for acute mountain sickness. Use it as a supportive aid alongside hydration.
Can I fly directly into Cusco?
Yes, but it is the hardest way to acclimatize. If you fly directly from sea level, take it easy for the first 24 hours—no tours, no hiking, and minimal physical activity.
Is oxygen available in hotels?
Most reputable hotels in Cusco keep oxygen tanks on-site for guests. Ask your accommodation beforehand if they provide oxygen service.