How Altitude Sickness Prevention Works in Kilimanjaro Groups
Understanding Altitude Sickness on Kilimanjaro
Altitude sickness, also known as Acute Mountain Sickness (AMS), is the most common health concern on Kilimanjaro. It occurs when you ascend too quickly and your body doesn't have time to adjust to the lower oxygen levels at high altitude.
The good news? With proper prevention strategies, altitude sickness is highly manageable. At Bush Lion Tours, we take altitude sickness prevention very seriously.
How We Prevent Altitude Sickness
1. Smart Route Selection
The route you choose has the biggest impact on altitude sickness risk. We recommend:
- 8-day Lemosho (95% success) — Best acclimatization of any route
- Northern Circuit (98% success) — Most gradual ascent
- 7-day Machame (90% success) — Good "hike high, sleep low" strategy
- Avoid 5-day Marangu — Only 60% success rate due to rapid ascent
2. "Hike High, Sleep Low" Strategy
Our itineraries are designed with the mountaineering principle of "hike high, sleep low." This means you climb to a higher altitude during the day but descend to sleep at a lower altitude. This helps your body acclimatize gradually.
For example, on Day 4 of the Lemosho Route, you climb to Lava Tower at 4,640m but descend to sleep at Barranco Camp at 3,960m.
3. Daily Health Monitoring
Every morning and evening, our guides check each climber's vital signs using pulse oximeters. We measure:
- Oxygen saturation (SpO2): Normal is 95-100%. Below 90% is concerning.
- Pulse rate: Elevated heart rate can indicate altitude stress.
- General symptoms: Headache, nausea, dizziness, fatigue.
If your readings are concerning, our guides will take immediate action — either slowing your pace, descending, or administering medication.
4. Diamox (Acetazolamide)
Diamox is a medication that helps prevent altitude sickness by stimulating breathing. We recommend it for all climbers above 3,500m. It's not mandatory, but our guides will discuss it with you during the pre-climb briefing.
Common Diamox protocol: 125mg twice daily, starting 1 day before ascent.
5. Hydration & Nutrition
Staying well-hydrated is crucial for altitude sickness prevention. Our guides encourage:
- 3-4 liters of water per day on the mountain
- Regular meals even when appetite is reduced
- Avoiding alcohol and caffeine at altitude
6. Gradual Ascent Profiles
Our itineraries never increase sleeping altitude by more than 500m per day above 3,000m. This gives your body the time it needs to produce more red blood cells and adjust to lower oxygen levels.
What Happens If You Get Altitude Sickness?
If you develop symptoms of AMS, our guides follow a clear protocol:
- Stop and rest — Don't continue ascending
- Assess symptoms — Mild AMS can often be managed
- Descend if necessary — Even 500m descent can provide relief
- Administer medication — Diamox, ibuprofen, or other treatments
- Evacuate if severe — We have emergency protocols and can arrange helicopter evacuation if needed
Summit Night Safety
Summit night is when altitude sickness risk is highest. Our guides carry supplemental oxygen and will administer it if any climber shows signs of severe altitude sickness. We also carry a comprehensive medical kit including:
- Pulse oximeters
- Supplemental oxygen tanks
- Diamox
- Ibuprofen
- Dexamethasone (emergency use)
Climb with Confidence
With Bush Lion Tours, you're in safe hands. Our guides have summited Kilimanjaro hundreds of times and know exactly how to manage altitude sickness. Join a group climb or contact us to learn more about our safety protocols.
