Let's take a minute to talk about your medication.  

This is allopurinol.  You should take it as prescribed by your doctor, and you should drink plenty of water each day while taking this medicine.  

It can take 2 to 6 weeks of regular use, but allopurinol decreases your chance of having gout attacks or kidney stones.   

At first, some side effects could occur, like diarrhea, nausea or upset stomach, but taking your dose after a meal should lesson this. You could also feel drowsy, so, avoid doing activities that require you to be alert, like driving, until you know how it affects you. If these or other side effects become reasons you want to stop taking this medication, please talk to your doctor or pharmacist.   

It is uncommon, but serious side effects could occur, so call your doctor right away if you notice unusual changes to your body, like swelling of your mouth, irritated eyes, or pain or bleeding when you urinate. You should also call right away at the first sign of any rash, no matter how mild.  

For best results, continue taking allopurinol as directed, and follow your doctor's advice about diet and lifestyle changes that may help your condition.