Are there alternatives to taking Diamox at High Altitude? Before we get into that, just remember there are alternatives to Diamox. The AP System® from Altitude Performance Research is a game changer for anyone heading to altitude. Physician-developed to support acclimatization, endurance, recovery, and sleep, its unique AM and PM formulas work together to help trekkers and mountaineers prepare, perform, and recover throughout demanding multi-day adventures at elevation. We recommend you use this the week before going to altitude and the whole time you are on the trek or expedition. Learn more here.
If you are considering taking Diamox, our high altitude doctors and specialists recommend taking Diamox from the first day of your trip. 125mg in the morning and 125mg in the afternoon. Check out all our upcoming trips.
What is Diamox Used for
Acetazolamide, commonly known by the brand name Diamox, is a prescription medication widely used to help prevent and reduce the symptoms of Acute Mountain Sickness (AMS). It works by helping your body acclimatize more quickly to lower oxygen levels at altitude.
Diamox stimulates breathing, allowing your body to take in more oxygen and adapt more efficiently to high elevations. While it is classified as a mild diuretic and may increase urination, its primary benefit at altitude is improving the body’s natural acclimatization process rather than simply removing excess fluid.
Many trekkers and climbers use Diamox when traveling to high-altitude destinations such as Kilimanjaro, Everest Base Camp, Aconcagua, and the Inca Trail. It can help reduce common symptoms of altitude sickness, including headaches, nausea, fatigue, dizziness, and difficulty sleeping.
However, Diamox is not a substitute for proper acclimatization. The most important factors in preventing altitude illness remain ascending gradually, staying well hydrated, eating properly, and allowing sufficient time for your body to adapt to the altitude.
Important: Diamox may not be suitable for everyone. Before traveling to high altitude, it is important to consult your doctor or healthcare provider. They will be familiar with your medical history, any medications you are taking, and any underlying health conditions that may affect your ability to travel safely in a low-oxygen environment. Your doctor can advise whether Diamox is appropriate for you and recommend the correct dosage for your trip.
Are you Allergic to Sulfas ?
Since Diamox is a sulfonamide drug, people who are allergic to sulfa drugs should not take Diamox. Diamox has also been known to cause severe allergic reactions to people with no previous history of Diamox or sulfa allergies.
Taking Diamox before going on a trek to altitude is important, to make sure there are no major side effects. Diamox is a diuretic so you do need to manage your hydration carefully. Follow us on Instagram.
Altitude Specialists
Ian Taylor Trekking has helped over 3,600 people reach Everest Base Camp at 5,364/ 17,500 feet. We run usually have 250+ people trekking in the Everest region annually. Our experience had led us to having 3 nights in Namche Bazaar before, moving higher. With over 17 years of high altitude experience we have developed unique itineraries with additional acclimatization. This means a safer and more enjoyable experience for you at high altitude.
High-Altitude Support for Trekkers, Climbers & Expedition Athletes
Preparing for a high-altitude expedition demands more than physical training. Whether you’re trekking to Everest Base Camp, climbing Kilimanjaro, tackling Mera Peak, or hiking the Inca Trail, your body must adapt to lower oxygen levels while recovering from consecutive days on the mountain.
The AP System® from Altitude Performance Research is a physician-developed altitude supplement created to support acclimatization, endurance, recovery, and sleep during multi-day adventures at elevation. Its unique AM and PM formulas work together to help trekkers and mountaineers prepare for and perform throughout demanding high-altitude expeditions.
Formulated with research-supported ingredients including Rhodiola rosea, Cordyceps, Ashwagandha, Ginkgo biloba, Creatine, and Glutamine, the AP System is designed to support healthy adaptation to altitude, sustained daytime energy, recovery after long trekking days, and restorative sleep—without caffeine or other stimulants.
Whether your goal is reaching Everest Base Camp, Kilimanjaro’s summit, Annapurna Base Camp, Cotopaxi, Aconcagua, or another high-altitude destination, the AP System complements a comprehensive preparation plan that includes structured training, proper nutrition, hydration, and gradual acclimatization. It is designed for hikers, trekkers, climbers, and endurance athletes who want to arrive better prepared for the physical demands of altitude.
Meet the Founders of Altitude Performance Research
Altitude Performance Research was founded by two Mayo Clinic-trained physicians with a passion for mountain medicine, endurance performance, and helping people thrive at high altitude. Living and working in Colorado’s mountain communities, the founders recognized that many travelers, athletes, and outdoor enthusiasts struggled with acclimatization, reduced performance, and recovery at elevation.
Combining their medical expertise with an extensive review of peer-reviewed scientific research, they developed the AP System®, a physician-formulated, stimulant-free altitude support system designed to promote acclimatization, daytime performance, recovery, and restorative sleep. Their mission is to provide science-based nutritional solutions that help hikers, trekkers, skiers, climbers, cyclists, and mountain athletes maximize every high-altitude experience.
Today, Altitude Performance Research continues to focus on evidence-informed innovation, creating products that support healthy adaptation to altitude while maintaining the highest standards of quality, safety, and scientific integrity.
Hydration, Hydration, Hydration
Slow and steady wins the race when it comes to low oxygen environments. Hydration is also key, we urinate out the bodies over production of alkaline that make us sick. We recommend 4 to 5 liters daily. The increased respiratory rate begins within the first few hours of arriving at altitudes as low as 5,000 feet. The lost carbon dioxide causes the body to become more alkaline.
To compensate for the body’s increasing alkalinity, the kidneys excrete bicarbonate (an alkaline substance) in the urine. We pee out the alkaline if we hydrate properly. If we don’t we get sick hence, less altitude sickness and in some cases none at all or tolerable. If hydration is taken seriously, most people will not need to take any medications at high altitudes. Hydrate hydrate hydrate along with, acclimatization being done correctly.
There are Some Alternatives to Diamox
While there are several alternatives to Diamox that may help support your body’s adaptation to altitude, there is no substitute for proper acclimatization.
After more than 20 years of leading treks and climbs at high altitude, one thing has become very clear: the more time you give your body to acclimatize, the greater your chances of staying healthy, enjoying the experience, and reaching your goal safely.
When choosing a trek or climb, always select an itinerary that allows for gradual ascent and includes sufficient acclimatization days—particularly during the early stages of the trip. A slower approach gives your body the time it needs to adapt to lower oxygen levels, significantly reducing the risk of altitude illness while increasing your chances of success.
In the mountains, patience is often the key to both safety and reaching the summit.
Natural and Nutritional Alternatives to Diamox
Many trekkers and climbers look for alternatives to Diamox when preparing for high-altitude adventures. While no supplement has been shown to be as effective as proper acclimatization and gradual ascent, several natural compounds may support performance, recovery, sleep, and adaptation to altitude.
It is important to understand that these supplements should never replace good acclimatization practices, hydration, nutrition, and careful monitoring of altitude illness symptoms. However, they may offer additional support during your preparation and expedition.
Rhodiola Rosea
Rhodiola Rosea is an adaptogenic herb traditionally used in Scandinavia, Russia, and parts of Asia to help the body cope with physical and mental stress.
At altitude, Rhodiola may help improve aerobic performance, reduce fatigue, and enhance recovery from prolonged exercise. Some studies suggest it may improve oxygen utilization and reduce perceived exertion during endurance activities. Many climbers use Rhodiola during training and expeditions to help maintain energy levels during long days on the mountain.
Potential benefits include:
- Improved endurance performance
- Reduced fatigue
- Enhanced recovery
- Better tolerance to physical stress
- Support for cognitive performance during prolonged exertion
Cordyceps
Cordyceps is a medicinal mushroom that has gained popularity among endurance athletes and mountaineers. Traditionally used in Chinese medicine, Cordyceps is believed to support oxygen utilization and energy production.
Research suggests Cordyceps may help improve aerobic capacity by increasing the body’s ability to utilize oxygen more efficiently. While results vary between studies, many athletes report improvements in stamina and recovery when using Cordyceps consistently during training.
Potential benefits include:
- Improved oxygen utilization
- Enhanced endurance
- Increased energy production
- Antioxidant support
- Faster recovery after strenuous exercise
Ginkgo Biloba
Ginkgo Biloba has long been studied for its effects on circulation and cognitive function. It is one of the most researched supplements in relation to altitude adaptation.
Some studies suggest Ginkgo may reduce the incidence of altitude sickness symptoms such as headache, fatigue, dizziness, and nausea. However, scientific findings remain mixed, and results vary between individuals.
While not considered a replacement for Diamox, Ginkgo may provide support for some trekkers when combined with a gradual ascent strategy.
Potential benefits include:
- Improved circulation
- Enhanced cognitive performance
- Reduced headache severity
- Possible support for altitude adaptation
- Antioxidant effects
Glutamine
Glutamine is one of the most abundant amino acids in the body and plays an important role in immune function and recovery.
Extended expeditions at altitude place considerable stress on the immune system. Glutamine supplementation may help maintain immune function during prolonged periods of intense exercise, trekking, and climbing.
Potential benefits include:
- Immune system support
- Improved recovery
- Reduced muscle breakdown
- Support for gut health during extended expeditions
Ashwagandha
Ashwagandha is another adaptogenic herb that has received considerable attention for its potential effects on stress management, recovery, sleep quality, and aerobic performance.
Several studies have shown improvements in VO₂ max, physical performance, and overall resilience to physical stress. Quality sleep is often difficult to achieve at altitude, making Ashwagandha particularly attractive for trekkers and climbers seeking better recovery.
Potential benefits include:
- Improved VO₂ max
- Better sleep quality
- Reduced stress and anxiety
- Enhanced recovery
- Improved physical performance
Creatine Monohydrate
Creatine is one of the most extensively studied sports supplements available. While often associated with strength training, recent research suggests creatine may also support cognitive function, mood, and energy production during periods of physiological stress.
At altitude, where both physical and mental fatigue can become significant challenges, creatine may help support energy availability and preserve muscle mass during long expeditions.
Potential benefits include:
- Improved muscular endurance
- Preservation of lean muscle mass
- Enhanced recovery
- Support for cognitive function
- Potential mood support during prolonged altitude exposure
What Works Best?
Despite growing interest in natural supplements, the most effective strategy for preventing altitude sickness remains:
- Ascend gradually.
- Follow a structured acclimatization schedule.
- Stay hydrated.
- Eat regularly.
- Sleep well.
- Monitor symptoms closely.
No supplement can replace proper acclimatization. For climbers attempting Kilimanjaro, Everest Base Camp, Lobuche East, Aconcagua, or other high-altitude objectives, careful ascent profiles remain the single most important factor in success and safety.
If you are considering using supplements or Diamox before your trek or climb, consult your doctor or healthcare provider to determine what is appropriate for your personal medical history and goals.
1). The Most Important Piece of Advice
On our treks to Everest Base Camp, Kilimanjaro and Machu Picchu we spend more time acclimatizing. We have 3 nights at 3,440m/ 11,300 feet on our Everest treks. It should be noted, an additional 24 hours of producing more red blood cells at altitude is important. We have these additional nights to help carry more oxygen around the body as we move higher. Not having enough acclimatization can make or break your trip. On Kilimanjaro we have a minimum of 8 days on the mountain. This usually results in, getting 100% of our clients to the summit.
On our Inca Trail Treks we always have 2 nights in Cusco at 11,152 feet. We do this for your safety going onto any Inca trail trek in Peru. Extra acclimatization without a doubt, is critical for a safe and enjoying a successful adventure going to high altitude.
Personally, I tried to cut corners on acclimatization and failed miserably. When I climbed Everest to the top I added additional acclimatization. As a result, I had no issues above 26,000 feet. In summary, it is important to pick the right itinerary with more acclimatization. If you would like further information CONTACT US today.
2). Take Ibuprofen When Going to Altitude
Ibuprofen is one of the most commonly used medications on high-altitude treks and climbs. It has long been trusted by mountaineers, trekkers, and expedition leaders to help manage many of the aches and pains that can develop during extended periods at altitude.
As a non-steroidal anti-inflammatory drug (NSAID), Ibuprofen can help reduce inflammation, relieve headaches, ease muscle soreness, and manage general discomfort associated with long days of trekking and climbing. Many people find it particularly helpful after a demanding day on the trail, allowing them to recover more comfortably and sleep better before the next day’s ascent.
Some climbers choose to take Ibuprofen before bed, especially if they are experiencing headaches, muscle soreness, or minor altitude-related discomfort. Better sleep and improved recovery can make a significant difference during multi-day expeditions.
Bring Ibuprofen on Your Next Expedition
In recent years, research has also suggested that Ibuprofen may help reduce the incidence and severity of Acute Mountain Sickness (AMS) symptoms in some individuals. While it does not improve acclimatization in the same way as Diamox, studies have shown that it can be effective in reducing altitude-related headaches and discomfort associated with exposure to lower oxygen levels.
However, Ibuprofen should not be viewed as a replacement for proper acclimatization, gradual ascent, hydration, and good expedition planning. It is best used as part of an overall altitude strategy rather than as a solution to prevent altitude illness.
As with any medication, consult your doctor before using Ibuprofen at altitude, particularly if you have a history of stomach ulcers, kidney problems, heart conditions, or are taking other medications. The usual dose of ibuprofen is one to two 200mg tablets. You can take Ibuprofen every four to six hours only if needed. Do not take more than 800 mg of ibuprofen daily. Take ibuprofen with food or after meals if it seems to bother your stomach. Ibuprofen does get absorbed by the blood stream much faster than Diamox making it a quick acting drug.
3). Take Garlic Tablets
For more than 20 years, I have included garlic supplements as part of my personal routine when trekking and climbing at high altitude. While garlic is not a substitute for proper acclimatization, many climbers and trekkers have traditionally used it to support circulation and overall health in low-oxygen environments.
At high altitude, the body undergoes a number of physiological changes as it adapts to reduced oxygen levels. One of these changes is an increase in red blood cell production, which helps transport oxygen more efficiently around the body. Garlic has long been associated with supporting healthy circulation and cardiovascular function, making it a popular supplement among mountaineers.
Although scientific evidence supporting garlic as a treatment for Acute Mountain Sickness (AMS) remains limited, many experienced climbers continue to use it as part of their overall altitude strategy. Personally, I have found it to be a useful addition during long expeditions and high-altitude treks.
Add to Your Supplement Stash
A simple garlic supplement can easily be added to your daily routine while trekking, and many mountain communities around the world also serve garlic soup, which has become a popular staple among trekkers. Whether in Nepal, Peru, Tanzania, or Ecuador, a warm bowl of garlic soup can be both comforting and nourishing after a long day on the trail.
As with any supplement, garlic should be viewed as a complement to—not a replacement for—proper acclimatization, hydration, nutrition, and a sensible ascent profile. In my experience, the most effective way to prevent altitude illness is still to move slowly, gain altitude gradually, and give your body the time it needs to adapt.
Over two decades of leading treks and climbs around the world have taught me that there is no magic pill for altitude. The real secret is patience, proper acclimatization, and listening carefully to your body every step of the way.
4). Chew Coca Leaves
The Incan people and culture have many recipes for curing illness importantly, these recipes all come from plants. For centuries the Inca’s and Quechua people have been using coco leaves undoubtedly, to aid them in low oxygen environments. Our staff in Peru love chewing coco leaves and the research suggests it actually works.
I usually drink hot water with coco leaves every morning. Getting in much needed hydration in addition, the homeopathic rewards offer you a more comfortable journey. You can buy coca leaves in the US and around the world. I have personal made over 10 treks on the Inca Trail to Machu Picchu and use coco leaves on all my Inca Trail Treks.
5). Drinking Beet Juice is a Good Idea
Research from a Norwegian university has suggested that beet juice may provide an additional boost for people exercising in low-oxygen environments. The researchers noted that beet juice may help the body deliver oxygen more efficiently to working muscles, potentially improving performance when fatigue begins to set in.
Beet juice has become increasingly popular among endurance athletes, cyclists, runners, and mountaineers because it is naturally rich in dietary nitrates. Once consumed, these nitrates are converted into nitric oxide, a molecule that helps relax and widen blood vessels. This process may improve blood flow and oxygen delivery throughout the body, particularly during exercise.
Consider a Beetroot Supplement
Many athletes now drink beet juice before training sessions or endurance events because studies have shown it can improve exercise efficiency and reduce the amount of oxygen needed to perform at a given intensity. Simply put, your body may be able to do the same amount of work while using slightly less energy.
On an extended expedition in a remote area where weight is a concern, you should consider a high quality beetroot supplement.
This becomes particularly interesting at high altitude, where the air contains less oxygen. As you ascend above 11,500 feet (3,500m), many people begin to notice the effects of altitude. Common symptoms include fatigue, shortness of breath, reduced exercise capacity, poor sleep, headaches, and sometimes nausea. These symptoms occur because the body is working harder to obtain the oxygen it needs.
Over time, the human body adapts through the acclimatization process. Breathing increases, heart rate changes, and the body gradually produces more red blood cells to transport oxygen more efficiently. However, acclimatization takes time—often several days, weeks, or even months depending on the altitude and the individual.
If your goal is to reduce the likelihood of altitude sickness and maximize your chances of success on the mountain, the single most important factor remains proper acclimatization. There is no shortcut for spending enough time at altitude and allowing your body to adapt naturally.
That said, researchers continue to investigate whether dietary nitrates from beet juice may offer additional benefits in low-oxygen environments. Some studies suggest that beet juice may help maintain exercise performance and improve oxygen utilization when oxygen availability is reduced. While the evidence is still evolving, many climbers and endurance athletes now include beet juice as part of their training and expedition nutrition strategy.
Personally Speaking
Personally, I view beet juice as a potential supplement to good acclimatization practices rather than a replacement for them. If you’re preparing for a high-altitude trek or climb, consider incorporating beet juice into your training and perhaps during your expedition. It is a natural source of dietary nitrates, widely available, and may provide a small performance advantage when every bit of energy matters.
As always, remember that no supplement can replace a well-designed itinerary, gradual ascent, proper hydration, good nutrition, and listening carefully to your body. In the mountains, success almost always comes from patience and acclimatization first, with supplements playing only a supporting role.
6). Ginkgo Biloba
Ginkgo Biloba is one of the most widely studied herbal supplements in relation to high-altitude travel and acclimatization. Derived from one of the oldest tree species on Earth, Ginkgo has been used for centuries in traditional medicine and is commonly taken today to support circulation, cognitive function, and overall brain health.
One of the reasons Ginkgo has attracted attention from mountaineers and trekkers is its ability to improve blood flow, particularly to the brain. Ginkgo also acts as an antioxidant, helping to protect cells from oxidative stress. At high altitude, where oxygen levels are reduced, both circulation and oxygen delivery become increasingly important as the body works to adapt to a low-oxygen environment.
Some studies have suggested that Ginkgo may help reduce the incidence of Acute Mountain Sickness (AMS) and improve symptoms such as headaches, fatigue, dizziness, and difficulty concentrating. Researchers believe these benefits may be linked to improved circulation and the body’s ability to cope with the physiological stress of altitude.
Ginkgo Biloba: Scientific Evidence is Mixed
However, the scientific evidence remains mixed. While some studies have found that Ginkgo may help prevent altitude sickness in certain individuals, others have shown little or no benefit. As a result, Ginkgo cannot be considered a proven alternative to Diamox, but many climbers and trekkers continue to use it as part of their overall altitude strategy.
Beyond altitude-related benefits, Ginkgo has also been studied for its effects on memory, concentration, and mental performance. Some research suggests that healthy individuals may experience modest improvements in cognitive function, memory retention, and mental processing speed. Other studies have found little measurable benefit. Nevertheless, maintaining mental clarity can be particularly valuable at altitude, where reduced oxygen levels often affect decision-making, concentration, and energy levels.
Begin Weeks Before Arriving at Altitude
Many trekkers begin taking Ginkgo several weeks before departure and continue using it throughout their trek or climb. While there is no guarantee it will prevent altitude sickness, some people report feeling more alert, focused, and better able to cope with the physical demands of high-altitude travel.
As with any supplement, Ginkgo should be viewed as a potential aid rather than a solution. The most reliable way to prevent altitude sickness remains a gradual ascent, proper hydration, good nutrition, and sufficient acclimatization time. No supplement can replace giving your body the time it needs to adapt to lower oxygen levels.
After leading treks and climbs at altitude for more than 20 years, I have found that the climbers and trekkers who succeed most often are those who focus on patience, pacing, and acclimatization first. Supplements such as Ginkgo may provide an additional benefit for some people, but they should always play a supporting role in a well-planned altitude strategy.
Whether you are trekking to Everest Base Camp, climbing Kilimanjaro, tackling Aconcagua, or attempting a Himalayan peak, beet juice has become one of the most popular natural supplements used by endurance athletes and mountaineers seeking to improve oxygen efficiency at altitude.
Remember These Natural Remedies
Prevention Tips:
- Acclimatize Slowly:
- Avoid abrupt ascents above 8,000 feet.
- Consider spending a few days at intermediate altitudes to allow your body to adjust gradually.
- Stay Hydrated:
- Maintain adequate hydration by consuming 4 liters of water daily.
- Minimize intake of diuretics like caffeine and alcohol.
Natural Remedies:
- Snack on Omega-3 Rich Foods:
- Walnuts, salmon, tuna, and fortified eggs possess anti-inflammatory properties that may alleviate altitude-induced headaches.
- Increase Carbohydrate Intake:
- High altitudes require more carbohydrates for energy.
- Opt for complex carbohydrates like whole oats and quinoa for sustained energy.
- Incorporate Beet Juice:
- Beet juice contains nitrates, which convert to nitric oxide, promoting vasodilation and enhancing oxygen delivery. However, it may not be suitable for individuals prone to kidney stones.
- Oxygenation:
- Supplemental oxygen can alleviate altitude-related symptoms but only in emergency and descent immediately.
- Oxygen supplementation systems, like Altitude Control Technology (ACT), simulate lower altitudes indoors, providing relief without the discomfort of traditional methods.
While descending to lower altitudes remains the most effective solution for altitude sickness, these natural remedies and prevention strategies offer relief and aid acclimatization, enabling individuals to enjoy high-altitude environments with minimal discomfort.
Contact the Experts
Are There Alternatives to Taking Diamox at High Altitude? yes, and our itineraries give you better acclimatization so you are not reliant on anything other than natural adaption to the lack of oxygen. We have been leading high quality treks and tours around the world with great success. Get in touch today and learn from our experience and how to fully prepare for your next high altitude adventure.