What is Allopurinol 100mg used for?
Allopurinol 100mg is used to treat gout, kidney stones, and tophi (uric acid deposits in tissues), which are caused by excessive levels of uric acid in the blood. It is also used to prevent elevated blood uric acid levels in patients undergoing cancer chemotherapy. Allopurinol works by reducing the production of uric acid in your body. This medicine may also be used to treat other conditions as determined by your doctor.
What are the side effects of Allopurinol 100mg?
Common side effects of allopurinol 100 mg in Australia are usually mild but should still be monitored. Always let your doctor know if anything feels unusual.
- Skin rash or itching – may signal an allergic reaction
- Nausea or stomach upset after meals
- Diarrhoea or loss of appetite
- Tiredness or sleepiness
- Mild joint or muscle pain early in treatment
Serious signs: fever, mouth ulcers, yellow skin, or easy bruising – seek medical help immediately
What is the recommended dosage of Allopurinol?
The dosage of Allopurinol prescribed to each patient will vary. Always follow your physician’s instructions and/or the directions on the prescription drug label.
What if you miss a dose of Allopurinol?
If your physician has instructed or directed you to take Allopurinol medication in a regular schedule and you have missed a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, then skip the missed dose and go back to your regular dosing schedule. Do not double the doses unless otherwise directed.
What if you overdose on Allopurinol?
If you take too much allopurinol, seek immediate medical help or contact the Poisons Information Centre (13 11 26) in Australia. Overdose symptoms may include nausea, vomiting, dizziness, drowsiness, or rash. In severe cases, it can affect the liver, kidneys, or cause allergic reactions. Do not wait for symptoms to worsen—prompt treatment helps prevent complications. Always take allopurinol exactly as your doctor or pharmacist has advised.
What other drugs could interact with Allopurinol 100mg?
It’s important to note that medicines other than those listed above may also interact with allopurinol.
Drug interactions can occur when it’s taken with other medicines or certain foods. Before starting treatment, let your healthcare professional know about any other medicines you’re taking, including over-the-counter products or supplements such as vitamins, minerals, or herbal remedies, as these may affect how allopurinol works.
Allopurinol can interact with blood thinners and some antibiotics.
Always tell your doctor if you smoke, drink alcohol, consume caffeine, or use recreational drugs, as these can influence your treatment. Also, mention any existing health conditions or family history of medical problems. Never start or stop a medicine without checking with your doctor first.
Where can I buy Allopurinol 100mg over the counter in Australia?
A high uric acid level can lead to gout or gouty arthritis, causing joint pain and inflammation. Allopurinol, available in Australia, is a xanthine oxidase inhibitor that helps lower the amount of uric acid your body produces. This medicine, whether branded or generic, is only available with a doctor’s script. You can’t buy allopurinol without a prescription in Australia.
Can I buy Allopurinol 100mg without a prescription in Australia ?
Allopurinol 100 mg is used to treat gout and kidney stones, and it’s sometimes prescribed during certain cancer treatments that can raise uric acid levels. The medicine helps reduce uric acid build-up in the body. In Australia, allopurinol comes in 100 mg and 300 mg tablets and is only available with a doctor’s prescription, not over the counter.
Can you take colchicine with allopurinol?
Yes, you can take colchicine and allopurinol together under medical advice. In Australia, doctors often prescribe them alongside each other when starting gout treatment. Allopurinol helps prevent future attacks, while colchicine reduces inflammation and pain during the adjustment period. Always follow your doctor’s instructions and report any stomach upset, nausea, or unusual symptoms promptly.
How effective is allopurinol for gout?
Allopurinol is one of the most effective medicines for long-term gout management in Australia. It works by lowering uric acid levels, helping prevent painful flare-ups and joint damage. While it doesn’t treat pain during an active attack, regular use can stop future episodes altogether. Staying consistent with your daily dose and follow-up blood tests ensures the best results.
Why can't you take allopurinol during a gout attack?
Starting allopurinol during an active gout attack can make the flare worse by suddenly changing uric acid levels. In Australia, doctors recommend waiting until the inflammation settles before beginning treatment. However, if you’re already on allopurinol, don’t stop taking it. Your GP may add anti-inflammatory medicines like colchicine or ibuprofen to ease the current symptoms.
What are the questions to ask your doctor before taking Allopurinol 100mg tablet?
Is it possible for me to take Allopurinol with other drugs?
Should certain beverages, foods and other products be avoided when I take Allopurinol?
What are the possible drug interactions of Allopurinol?
How will Allopurinol work in my body?
How should Allopurinol be taken?
How to reduce the risk of Allopurinol drug interactions and side effects?
Warnings and Precautions
The health and medical information provided here is intended to supplement and not substitute for the expertise and judgment of your physician, pharmacists or other health care professional. It should not be understood to indicate that the use of Allopurinol is safe, appropriate or effective for you. Always consult your health care professional before using this, or any other, drug.
