Summit of Kilimanjaro | Eco-Africa Climbing
Summit of Kilimanjaro | Eco-Africa Climbing

Published on October 25 2018
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Taking Diamox to reach the roof of Africa


  • Kilimanjaro is 5895m above sea level

  • High altitude: 4,900 to 11,500ft (1,500 to 3,500m)

  • Very high altitude: 11,500 to 18,000ft (3,500 to 5,500m)

  • Extreme altitude: 18,000ft and above (5,500m and above)

  • Diamox was approved on July 27, 1953

  • Two-thirds of Kilimanjaro outfitters advocate the use of Diamox

  • Staying hydrated to avoid altitude sickness is the top piece of advice from over 100 tour operators

Taking Diamox to reach the roof of Africa

In August and September 2018, Your African Safari surveyed over 150 Kilimanjaro tour operators and several climbers to solicit their feedback on Diamox usage for altitude sickness. Two-thirds of tour operators surveyed said they advocate the usage of Diamox. Jump to survey results

66% of Kilimanjaro tour operators advocate Diamox usage

Kilimanjaro—Tanzania’s top tourist attraction

Kilimanjaro, the highest mountain in Africa, attracts an increasing number of hopeful climbers each year. As of 2017, an estimated 60,000 people attempt to summit Kilimanjaro each year, making it Tanzania’s top tourist attraction 1. Technical climbing skills aren’t needed for most routes and, while the summit is at 5895m/19340ft, the trek commences at 4900m, for a total ascent of around 1,100m/3300ft. Despite the short ascent, the summit is at extreme altitude. Each year, over 1,000 people must be evacuated 2 and an average of seven people die, mainly due to high altitude issues. See climbing Kilimanjaro reviews. 

Kilimanjaro base camp

High altitude sickness | Acute mountain sickness

It is generally agreed that going too high, too fast is a primary cause for altitude sickness. Symptoms of altitude sickness usually develop between 6 and 24 hours after reaching altitudes of more than 3,000m (9,842 feet) above sea level. These symptoms are not unlike those of a hangover: throbbing headache, nausea, dizziness, lethargy, a feeling of pressure on one’s chest, especially when recumbent and shortness of breath. As more people review their experience of Kilimanjaro, more of them mention the use of Diamox.

About Diamox

Manufactured by Teva Pharmaceutical Industries, an Israeli company, and initially approved on July 27, 19533, 125 mg and 250 mg Diamox tablets were originally created to treat patients with glaucoma. Diamox (acetazolamide) suppresses carbonic anhydrase, and it was soon discovered that these inhibitors have been shown to lessen acute mountain sickness symptoms. A slow-release version, called Diamox Sequels, was also marketed but has since been discontinued 4.

Kilimanjaro survey results

Your African Safari reached out to over 800 Kilimanjaro outfitters and had a response rate of just over 20%. Of the 150+ tour operators that participated, half said they noticed an increase in the number of clients that use Diamox. Two-thirds of tour operators recommend Diamox to their clients and more than 60% of them have been offering trekking for five or more years.

About half of climbers surveyed used Diamox

Climbers who used Diamox survey

Who's climbing Kilimanjaro?

Of the members surveyed, the majority were female.

Gender breakdown of Kilimanjaro climbers


Feedback from one YAS member who climbed this year (2018).

"Of the four of us, three took the altitude pills. One of our daughters stopped taking the pills before we started. We don't know if she was ill because of the pills or not. The other three of us had no symptoms associated with the medication. We all summited, but we all felt some effects of the altitude at the basecamp, e.g. fatigue, mild nausea and shortness of breath. Our daughter who was not on the pills began having symptoms of altitude sickness at the summit, blue lips, headache, etc. She and one of our guides pretty much ran back down to basecamp and her symptoms were quickly alleviated. I would highly recommend taking altitude sickness pills to anyone hiking Kili."                                                                                                                                                                                                       YAS member Laura

YAS surveyed mainly seasoned tour operators

How many years offering Kilimanjaro tours

Advice for those looking to summit Kilimanjaro

Kilimanjaro advice

Kilimanjaro and safaris

Kilimanjaro’s proximity to some of Africa’s top safari destinations: Serengeti, Ngorongoro Crater, Tarangire and Lake Manyara means a safari and a Killi trek holiday can effortlessly be combined into one.
Are you considering trekking Kilimanjaro? Why not browse packages from over 250 tour operators.

View Kilimanjaro tours


For media and press queries, please contact us.

Participating tour operators

Your African Safari would like to thank all tour operators who took the time to participate in this survey. Participants had the option to remain anonymous. Below are those who wished to be named.

Active Kilimanjaro

Adventure Savvy Africa Limited

Africa Starpal Safaris

African Breeze Tours

African Overland Ltd

African Route Adventures & Safaris

African Travel Tour

All About Africa

Altezza Travel

Bantu Pori Journeys

Bayango Tours

Beauty of Creation Tours & Safaris

Bless Africa tours and Safaris

Budget Safaris Tanzania

Cassiopea Tours and Travel

Chaz Tours and Travel

Chitu Safari & Services

Come and See Adventures

Costo Tours & Adventure Activities

Dallago Tours Kenya Tanzania Limited

Destinations Africa

Duma Explorer

East African Voyage

Eastland Adventures

Eco-Africa Climbing

Enosa Expeditions

eTrip Africa

Evarest-adventures ltd

Exclusive Wilderness Trails Ltd.

Experience Zanzibar Tours & Safaris

Genesis of Adventure

Gideon Tanzania Safari


Indigo Safaris

Infinite Safari Adventures

Jambo Kili Tours

Jiwe Adventures

Kenya Tanzania Trips

Kichao's Tanzania Safaris Ltd

Kili Treks Tanzania

Kilimanjaro Centre for Trekking and Ecotourism (KCTE)

Kilimanjaro Tanzanite Safaris Co.Ltd

Kilimanjaro Wonders Expedition Safari (KWESA TOURS)

Kubwa Five Safaris

Lappet Faced Safaris

Leading Expeditions

Leken Adventure

Maasai Wanderings

Marangu Treks & Safaris

Maryo Tours

Matea Tours & Safaris

Migration Venture Africa

Nature Bound Africa

Novi Travel & Tours

Nyange Adventures

Nyayo Tours and Safari

Pamoja Safaris

Paradise Safaris Africa

RA Safaris Limited

RajaTours Tanzania

Ringo Expeditions

Rondo Dwarf Safaris

Safari Bando Adventures

Safari Explorers

Safaribook Evolution

Selek Tours & Safaris

Selfmade expedition

Serac Adventure 

Simba Adventures

Summit Expeditions & Nomadic Experience

Summits Africa Ltd

Tanzania Choice Safaris

Tanzania Serengeti Adventure Ltd

Top Cream Tours and Safaris

Top of Tanzania

Trek & Hide Adventures

Unique Jungle Tours

Unique Pathways Ltd

Utalii Travel & Safaris

Voyage Africain Ltd

Wilds of Africa Tours & Travel

YHA Kenya Travel Tours and Safaris

Zanzibar Cholo Tours & Safaris


About the author

Has been on: 15 safaris

Your African Safari (YAS) is a safari-planning resource for anyone planning an African safari. It features information on over 2600 tour operators including company and vehicle descriptions, user reviews, safari itineraries and photos. It also features detailed information on 14 countries and 84 parks and game reserves.

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Said on 08 January 2019 12:46

Thank you both for making this survey a reality! Please do help us by sharing it.

Said on 18 March 2019 16:49

Jiwe, you were in the survey! Thanks for your help.


Said on 08 January 2019 12:00

Thank you YAS for chance to share our opinions regarding using Diamox for summiting Kilimanjaro. Congratulations to YAS for great results which will help Mount Kilimanjaro climbers. Kilimanjaro Tanzanite Safaris Ltd - CEO Tourism


Said on 08 January 2019 12:00

Thank you YAS for chance to share our opinions regarding using Diamox for summiting Kilimanjaro. Congratulations to YAS for great results which will help Mount Kilimanjaro climbers. Kilimanjaro Tanzanite Safaris Ltd - CEO Tourism

Edgar Sirikwa

Said on 07 March 2019 18:04

First of all, we advice our clients on the routes that they are going to choose, the route with the higher level of acclimatization such as Lemosho,northern circuit and machame route where you climb high and sleep low reduces the chances to get altitude sickness. We also advice our clients to use diamox but should make sure that they drink as much as they can(not less that 3 liters of plain water daily) to stay hydrated all the time. Walking slowly (pole pole) helps climbers to cope with the altitude. Cheers!!


Said on 04 January 2019 13:55

Thank you guys for the opportunity. Bantu Pori Journeys - Managing & Operational Director.

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About YAS

Your African Safari is a safari-planning and safari review site. It was created to help support a healthy African wildlife population. All reviews are vetted before being approved and only ethical tours are published