Diamox is a medicine prescribed off-label to treat AMS, or altitude sickness. It works by helping the body to acclimatise to high altitude environments.
Please note that we do not offer this medication through our online service. Speak to your GP in person to find out if Diamox is suitable for you to use.
Each Diamox SR tablet contains 250mg of acetazolamide. For altitude sickness, treatment may be one or two tablets a day for a specified number of days.
Secure doctor consultation
Your case is confidentially reviewed by a qualified practitioner
Dispensed by a UK pharmacy
Our regulated pharmacy works to the highest possible standards
All of our orders are delivered by 24-hour tracked courier
Diamox SR is a medication made by Mercury Pharma, used to medicate a number of conditions. It is sometimes prescribed off-label for the treatment of altitude sickness, or AMS, an illness characterised by feelings of dizziness, exhaustion and headaches, and is induced by a lack of oxygen at high altitudes. Sometimes, this condition can lead to more serious symptoms, including loss of consciousness, and the coughing up of a white or pink foam.
- Effective at preventing sickness
- Sustained-release capsule
- Easy to swallow treatment
The higher a person climbs, the more severe symptoms are likely to be; however, it is more the rate at which one travels to these altitudes than the height which makes a difference. This is because the body needs to acclimatise to its new environment. Although it is rare, complications can result and prove fatal; so be aware that while treatment can help, it is recommended to get the advice of a climbing expert before embarking on your trip.
When someone encounters altitude sickness, their symptoms may be caused by: irregularities in the balance of fluid and electrolytes in the body; altered pH levels in the blood; and raised pressure in the lungs. The active ingredient in Diamox SR tablets is acetazolamide, and this works by increasing the secretion of alkali, or bicarbonate from the kidneys, into urine. This then raises the acidity level of the blood, spurring the body on to increase its circulation of oxygen; and helps it to become accustomed to its new surroundings.
Carefully follow the directions provided by your doctor when applying this treatment.
We do not provide Diamox through our online service. If you want to know more about this treatment and whether it is suitable for you, make an appointment with your GP. They will be able to give you specific guidance and issue a prescription where necessary.Buy now
How to use Diamox
It is vital to read the safety information leaflet fully before using this product, and to adhere to the guidelines provided by your prescriber. Doing so will help you to get the most out of the medication and reduce the potential for side effects.
- Take as directed by your prescribing doctor.
- This may be one or two capsules a day, taken before food.
- Begin the treatment two days before ascent, so that you can become accustomed to any side effects it may cause.
- Swallow capsules whole and do not chew or crush them prior to use.
- Never take more than your doctor has told you to.
- If you miss a dose, do not compensate by taking a double dose. Ask your doctor for advice.
These directions are supplied as a guide only. Follow the instructions provided by your doctor during use.
Diamox side effects
As with any medicine, it is important to be aware of the potential side effects this product may cause so that you can seek advice from your doctor in the event that they occur.
Visit your nearest doctor or hospital immediately if you experience any of the following: signs of an allergic reaction; a reduction in the number of white blood cells and ‘platelets’, resulting in unusual bruising or bleeding, fever, severe chills, sore throat or mouth ulcers; bruises or tiny red or purple spots on your skin; a severe condition of the skin that may affect the mouth and other parts of the body; weakness or paralysis, and reduced muscle tone; fits; pain or burning when you pass urine, have difficulty in passing urine, or have blood in your urine; stools which are black or tarry, or bloody; signs of liver disease such as jaundice; anaemia or bone marrow depression; pain in your lower back; or pale stools.
Other side effects include:
Headache, diarrhoea, feeling or being sick, loss of appetite, thirst, dizziness, loss of full control of arms or legs, flushing, increased urinary urgency, tiredness or irritability, feeling over-excited, a tingling or numbness in the fingers or toes, or coldness in the extremities, depression, drowsiness or confusion, loss of libido, tinnitus, or sight problems.
This is not a complete list of the side effects associated with this product. For a more detailed account, refer to the patient information leaflet supplied.
Taking it with other medications
Let your doctor know if you are currently using any other medications during consultation. These may be prescription, non-prescription or remedial products.
Diamox SR may interact with the following: medicines for your heart such as cardiac glycosides; treatments to reduce blood pressure; blood-thinners such as warfarin; anti-diabetic medications such as metformin; antiepileptics such as phenytoin, primidone or carbamazepine or topiramate; drugs which interfere with folic acid, such as methotrexate, pyrimethamine, or trimethoprim; steroids such as prednisolone; aspirin and related medicines; carbonic anhydrase inhibitors; amphetamines; quinidine; methenamine; lithium; sodium bicarbonate therapy; or ciclosporin.
Conditions to look out for
It is vital to tell your doctor if you have or have ever had any medical conditions which may affect your suitability to the medicine, including: kidney problems; lung problems; Addison’s disease; diabetes; or epilepsy.
Pregnancy and breastfeeding
Do not take Diamox if you are pregnant or breastfeeding, or trying to conceive.
Driving and using machinery
If you become dizzy or drowsy after taking Diamox, or have any sight problems, do not drive or use machines.
Q&A: our Diamox discussion forum
Can I still drink alcohol?
Yes. Alcohol is not known to affect the way Diamox works. But it may be advisable not to drink alcohol if you are experiencing symptoms of altitude sickness (AMS), as this may make the condition worse.
Will I still be able to drive?
Yes. However, if you notice any side effects which may make driving dangerous, refrain from doing so and speak to a doctor.
Can I take this medicine while pregnant?
No. You must not use it if you are pregnant or suspect you might be, and talk to a consultant before use if you are breastfeeding.
How do I store it?
In a safe and secure environment at room temperature, below 30°C and out of the reach of children.
Am I allergic to anything in the medicine?
Each Diamox SR capsule contains 250mg acetazolamide, microcrystalline cellulose (E460), sodium lauryl sulphate, purified water, ethylcellulose, mineral oil, hydroxypropyl methylcellulose (E464), Pigment Blend PB-230005 Orange [hydroxypropyl cellulose, titanium dioxide and FD&C Yellow #6/Sunset yellow FCF aluminium lake (15-18% grade), Talc and FD&C Yellow #6/Sunset yellow FCF aluminium lake (38-42% grade)], gelatin, titanium dioxide (E171), yellow iron oxide (E172) and erythrosine (E127). Do not take them if you are allergic to any of these ingredients.
Is it available over-the-counter?
No. You can only buy Diamox with a prescription from a doctor. This is so that they can check whether it is appropriate for you to take.
Is it right for me?
We recommend that you speak to your GP in person if you want to find out whether Diamox is suitable for you. They will be able to give you specific advice and issue a prescription if suitable.
- GMC Doctors
- Genuine Medication
- 24hr Delivery
- Secure Payment & Data
- Registered Pharmacy
- Easy Repeat Orders
We promise to keep your details secure and private. We will never sell your information or share it with third parties. Whatever treatment you buy online from us, we will send in plain, unmarked packaging via our secure courier service.
Delivery on all items is included in the price. After your order has been dispatched, you’ll be supplied with a tracking number, allowing you to follow the progress of your items every step of the way. We deliver to anywhere in the UK, so whether you’re in London, Birmingham, Manchester, Glasgow or Cardiff, your order will be at your door within just 24 hours of approval from our doctor.
Recent Diamox Reviews
Find the treatment you need.
A GMC-registered doctor will review your answers.
Next-day delivery. Every order is sent by tracked courier.
We keep your details secure so you can reorder with ease.