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Home / Travel Clinic / Altitude Sickness / Diamox (Acetazolamide)

Diamox (Acetazolamide)

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What is Diamox?

Diamox is a medication used to treat altitude sickness symptoms. It can help to decrease or eradicate headaches, dizziness and difficulty in breathing at high altitudes. Usually people suffer from altitude sickness when they ascent quickly to 10,000 feet or more. The advice for people showing altitude sickness symptoms is usually to descend slowly and stop lower down for a day before continuing, but this is not always an option. By preventing the symptoms with Diamox climbers are able to continue with their journey.

What are the benefits?

Using a medication to treat or prevent altitude sickness can be beneficial to anyone who is planning a trip which will involve climbing high mountains. This is because altitude sickness can present a significant risk to your health as well as limiting your enjoyment of the holiday. Diamox (Acetazolamide) can be used to prevent altitude sickness as well as to reduce the symptoms you may already be suffering from.

How does Diamox work?

When you suffer from altitude sickness the chemical balance in your blood is disturbed. Diamox is effective in correcting the imbalance which is why it is used as both a preventative and treatment when ascending about 10,000 feet. It is classed as an off label treatment for altitude sickness and can be prescribed to help prevent symptoms in those that have experienced them beforehand.

Although it is recommended to take Diamox before you leave, it can also be used to treat altitude sickness symptoms should they appear during your ascent.

The active ingredient in Diamox is acetazolamide, a diuretic which increases the amount of urine produced by the body which in turn changes the acidity of the blood. Although it is not currently licensed in the UK as a treatment for altitude sickness, it reduces the fluid around the lungs and brain which helps with breathing so it is often prescribed to people who are at risk of suffering from altitude sickness.

How do you take Diamox?

You can buy Diamox (Acetazolamide) capsules in doses of 250mg from euroClinix. To allow the body to get used to Diamox and ensure any common side effects are experienced before ascending it is advisable to start treatment a few days prior. Tingling of the extremities is often experienced while the body gets used to the medication, which in a home environment is easier to get used to that at a high altitude where the onset of symptoms could cause panic and distress.

  • Take one tablet twice a day starting at least 2-3 days before ascent
  • Take the tablet at the same time each day so the dose is evenly spread out
  • Continue to take the medication while ascending and for 2 days after you reach the top
  • Be sure to take the tablets whole with a meal. You should not increase your daily dose without consulting with a doctor and if you forget to take it at some point do not double your next dosage

Diamox, and its generic form Acetazolamide, should be used in conjunction with other methods of preventing altitude sickness. When climbing a high mountain it is important to allow the body time to acclimatise to the different altitudes and if you begin to suffer from severe symptoms you should always decrease immediately.

Diamox dosages

You can buy Diamox online at euroClinix at a dose of 250mg per tablet. Each pack contains 28 tablets.

Diamox precautions

Acetazolamide is usually safe and effective for anyone looking to prevent altitude sickness although there are people who will not be prescribed the medication.

Before buying Diamox online you should take extra precautions if you have:

  • Problems with your adrenal gland
  • Low sodium or potassium levels
  • Kidney or liver disease
  • Metabolic problems
  • Chronic breathing problems
  • Diabetes
  • High calcium levels
  • Gout
  • Glaucoma
  • Hyperthyroidism

If you are due to have any laboratory tests while on Diamox let your doctor/hospital know that you are taking it so results can be assessed accordingly.

During your online consultation you will be asked to mention any other health conditions or medications as it may affect the dosage of acetazolamide which you will be prescribed.

What are the side effects?

As with all medications there is a chance that you could experience side effects while your body gets used to the medication. This is why it is advisable to try the medication for few days before ascent. The most common Diamox side effects include:

  • Tingling of the extremities
  • Dizziness
  • Nausea
  • Diarrhoea
  • Tiredness
  • Temporary short sightedness
  • Tinnitus

You should not take Diamox if you have a known allergy to any of the ingredients. If you are showing any signs of allergy after taking Diamox you should seek medical attention immediately. Signs of allergy to Diamox include:

  • Difficulty breathing
  • Muscle weakness
  • Unexplained bruising
  • Swelling
  • Skin rashes

How to buy Diamox safely online

To buy Diamox safely online, the prescribing doctor at euroClinix must first be sure that you do not have any medical problems or are taking medication that could interact with it. To do this, you will first have to fill in a free online consultation form. Once this has been agreed by the qualified doctor, your medication will be sent to your address for delivery the next day. Our service is free including prescription and delivery, there are no hidden costs - you just pay for the medication.

If you do not use all of your Diamox and wish to take more at a later date, check the expiry date before leaving. Further prescriptions of Diamox can be ordered through the fast repeat prescription service at euroClinix.

Please note, Diamox will not always be packaged as shown in the picture above. If you choose the 28 or 56 tablet option, you will receive your medication in a plain white box with the dosage information included.

Note: You must complete a short online consultation so that our doctor can ensure that the treatment is suitable for you. The above pricing should only be used as a reference. The final decision to issue this treatment lies with the prescribing doctor.

Medically reviewed by Dr. Anand Abbot Written by our editorial team
Last reviewed 15-06-2022
Diamox (Acetazolamide) information
Product nameDiamox
Active ingredient(s)Acetazolamide
ManufacturerMercury Pharma
Trustpilot rating4.8/5
Trustpilot reviews5
AvailabilityOut of stock
DescriptionDiamox is a prescription treatment used to effectively prevent the symptoms associated with altitude sickness
ExemptionSubject to medical prescription
Available dosage250mg
ApplicationMen and women over 18 needing altitude sickness prevention treatment
UsageTake up to 4 tablets a day, starting 2 days before ascent
Drug classCarbonic anhydrase inhibitors
Alcohol consumptionCan cause side effects - take caution or avoid alcohol consumption, seek a GP for further advice
When breastfeedingCaution is recommended, ask your doctor and read the leaflet thoroughly for each treatment
When pregnantCaution is recommended, ask your doctor and read the leaflet thoroughly for each treatment
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