How to Acclimatize to Altitude Sickness in Cusco: A Practical Guide
- 8 de September de 2026
- Parwa seo_bot
What is soroche, or altitude sickness?
Soroche, medically known as acute mountain sickness, is the body’s natural response to the reduced oxygen available at high elevations. Cusco sits at approximately 3,400 meters above sea level (m.a.s.l.) — an altitude that can challenge even the most seasoned travelers.
The most common symptoms include headaches, fatigue, nausea, dizziness, loss of appetite, and difficulty sleeping. Altitude sickness doesn’t discriminate by age or fitness level: a young, athletic person may be hit harder than someone older and less active. That’s why knowing how to acclimatize to altitude sickness in Cusco is just as important as knowing what to pack.
The good news is that the human body is remarkably adaptable. With the right care during the first 24 to 48 hours, most travelers acclimatize without major issues and go on to fully enjoy everything that Cusco has to offer.
Why does Cusco call for special acclimatization?
Cusco is more than a tourist destination: it is Qosqo, the ancient capital of the Tawantinsuyu — the Inca Empire. Its historic center, a UNESCO World Heritage Site, spreads across an Andean valley ringed by mountains that soar above 4,000 m.a.s.l. Many of the sites visited from the city — such as the Chinchero plateau at 3,762 m.a.s.l. or the archaeological wonders of the Sacred Valley — sit at similar or even greater elevations.
Most travelers arrive by plane from Lima, which is essentially at sea level (around 154 m.a.s.l.). This sudden change in altitude over just a few hours of flight is precisely what triggers soroche. The body needs time to ramp up red blood cell production and adapt to the lower oxygen pressure.
Practical tips for acclimatizing to altitude sickness in Cusco
1. Rest on your first day
The most important rule — and the one most often ignored: take it easy on your arrival day. The excitement of finally being in Cusco is completely understandable, but rushing up to Sacsayhuamán or diving into an action-packed tour within your first few hours can make symptoms significantly worse. Save day one for settling in, strolling slowly through the historic center, and soaking up the city at a leisurely pace.
2. Stay well hydrated
At altitude, the body loses fluids faster than usual. Drinking plenty of water — at least two liters a day — is essential to support acclimatization. Avoid alcohol during the first 48 hours: even though a beer or a pisco sour might seem harmless, alcohol dehydrates you and dilates blood vessels, which can intensify altitude sickness symptoms.
3. Drink coca tea
Coca tea (mate de coca) is one of the most time-honored remedies in the Andes, used for centuries by local communities. Coca leaves (Erythroxylum coca) contain alkaloids that help improve blood oxygenation and ease headaches. In Cusco, virtually every hotel welcomes guests with a cup of coca tea — an Andean hospitality tradition with a very practical purpose behind it.
Chewing coca leaves with a pinch of baking soda (called llipta or tocra in Quechua) is another traditional practice that works just as well. There’s no need to hesitate: in Peru, the use of coca leaves in their natural form is completely legal and is an integral part of Andean cultural heritage.
4. Eat light and be patient with yourself
The digestive system is also affected by altitude. In the first few days, go for light, easy-to-digest meals: soups, broths, quinoa, potatoes, and cooked vegetables are all excellent choices. Local cuisine, rich in Andean tubers and grains like quinoa and kiwicha, is naturally suited to the body’s energy needs at altitude. Steer clear of heavy or greasy meals, especially at dinner.
5. Consider preventive medication
Acetazolamide (Diamox) is a medication some doctors recommend to prevent or reduce altitude sickness. However, always consult your doctor before traveling: it has contraindications and side effects that vary from person to person. In Cusco, you’ll also find Sorojchi Pills at local pharmacies — a commonly used pain reliever among travelers for altitude-related headaches. Neither of these medications is a substitute for gradual acclimatization.
6. Plan your itinerary from lower to higher altitude
If your route includes destinations like the Inca Trail, Ausangate Mountain (6,384 m.a.s.l.), or Abra Málaga pass (4,316 m.a.s.l.), it’s essential not to head straight to the highest points from Lima. A well-planned itinerary starts with a couple of days in Cusco, then dips down to the Sacred Valley (between 2,800 and 3,150 m.a.s.l.), before gradually working back up to higher elevations. This approach, known in mountaineering as “climb high, sleep low,” is the cornerstone of progressive acclimatization.
At Parwa Travel, we build this principle into every itinerary from the start. We know the Andean landscape inside and out, and we know how to structure each route so your body can adapt naturally. Browse our Southern Peru packages to see how we put each experience together.
7. Avoid intense physical exertion in the first few hours
Climbing stairs quickly, lugging heavy bags, or walking uphill without breaks are all activities that spike your body’s oxygen demand at exactly the moment it’s least equipped to meet it. Walk slowly, breathe deeply, and don’t be shy about taking your time. In Quechua, there is a concept called ñan — the path walked with awareness and intention. Bringing that philosophy to your first steps through Cusco is, quite literally, the best medicine.
Warning signs: when to seek medical attention
Mild altitude sickness can be managed with rest, hydration, and coca tea. However, some symptoms point to more serious conditions — such as high-altitude pulmonary edema or cerebral edema — that require immediate medical attention. Seek professional help right away if you experience:
- Shortness of breath while at rest
- Mental confusion or severe disorientation
- Inability to walk in a straight line
- A persistent cough producing pink or blood-tinged sputum
- Bluish lips or fingernails
- Continuous vomiting that prevents you from staying hydrated
In any of these cases, the most important step is to descend to a lower altitude immediately and get to a medical facility. Cusco has hospitals and clinics fully equipped to handle these kinds of emergencies.
Can everyone acclimatize?
The vast majority of healthy individuals can acclimatize to altitude in Cusco without serious complications. That said, it’s worth consulting a doctor before your trip if you have a history of heart or lung disease, severe anemia, or high blood pressure. Pregnancy is also a factor to consider: speak with your OB-GYN before planning a trip to high altitude.
Young children deserve special attention: they are just as susceptible to altitude sickness, and their symptoms can be harder to spot because they may not be able to describe how they feel. Keep a close eye on their behavior, appetite, and energy levels during the first few hours in Cusco.
Cusco beyond the altitude: worth every second
Once you’ve acclimatized, Cusco reveals itself in all its glory: a city where Inca stonework underlies colonial churches, where Quechua and Spanish mingle in the markets, and where every street corner holds centuries of living history. From cultural city tours to trekking routes through the Andean highlands, the experience is truly one of a kind.
And if your journey continues on to Lake Titicaca in Puno — at 3,812 m.a.s.l. — or to the canyons of Apurímac, the acclimatization days you spend in Cusco will be your best investment. A well-prepared body makes for a better journey.
At Parwa Travel, we are local guides rooted in Quechua and Andean culture, and we know every detail of these routes. If you want to plan a responsible, thoughtfully structured trip with people who grew up in these mountains, get in touch and let’s design your experience together.
