General Information
What should I know before taking this drug
Dosage information
Adverse reactions
Additional information if any
Brand names and manufacturer
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Zyloprim (Prometheus labs inc.)
Lopurin (Knoll)
Aloprim (Bioniche pharma)
Aloric (Intas) 

Type: OTC/Prescription/schedule

Allopurinol is prescription drug. It is sold from the pharmacy store only in the presence of written instructions known as prescription from a licensed healthcare provider. 


Allopurinol is pronounced as: al oh PURE i nole 

What is allopurinol?

Allopurinol belongs to hyperuricemia and gout preparations. 

Common uses of allopurinol

Allopurinol is used in the treatment of gout and kidney stones.
Allopurinol is also used to decrease the levels of uric acid in patients receiving cancer therapy.  


Allopurinol should not be used in patients hypersensitive to it and in acute gout attack. 

What are the precautions I should follow for allopurinol?


Old people:

Pregnant woman:

Allopurinol belongs to FDA pregnancy category C. This means that allopurinol may harm an unborn baby if used during pregnancy but potential benefit may warrant use of the drug in pregnant woman despite potential risks. Always inform your doctor if you are pregnant or are planning for conception.
Lactating women:

It is not known whether allopurinol passes into breast milk or if it could harm the baby. Do not take allopurinol with out first talking to doctor if you are breast feeding a baby.

What are the dosage forms allopurinol is available in the market

Allopurinol is available in the form of tablet and injections. 

Doses for allopurinol

Allopurinol can be started with 100mg/ day to maximum of 800mg / day according to response for the treatment of gout.

Use as directed by your physician, your physician prescribes depending on the severity of disease. 
Use the complete course of medication as prescribed by your physician even though you feel better after one or two days of usage of medication.  

What about if I missed the dose of allopurinol

If it is almost the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not take two doses at same time to cover up the missed dose. 

What should I do if I over dosage allopurinol

In case of overdose contact your nearest poison control centre or emergency medical centre for immediate care by physician. 


Allopurinol side effects are

  • Diarrhoea
  • Nausea, vomiting
  • Headache
  • Alopecia   

When to consult the health expert about the side effects of allopurinol

If any of the above side effects become worse or any severe allergic reactions like difficult breathing, chest tightness, swelling of face, lips, mouth stop the allopurinol immediately and consult your doctor. 

Store allopurinol at room temp (15 – 30 degrees C / 59 – 86 degrees F). Avoid excessive heat, moisture or direct sunlight, never store in the bathroom.
Keep it out of reach of children. Make sure that any left over portion is disposed off safely.  

What is the most important information I should know about allopurinol    

Written by: Healthplus24 team
Date last updated: May 10, 2012