Zyloprim Oral

In Depth

Generic Name: ALLOPURINOL - ORAL
Pronounced: (AL-oh-PURE-i-nol)

Zyloprim Oral Side Effects

Stomach upset, nausea, diarrhea, or drowsiness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these rare but very serious side effects occur:

numbness/tingling of arms/legs
easy bleeding/bruising
signs of infection (e.g., fever, persistent sore throat)
unusual tiredness
painful/bloody urination
change in the amount of urine
yellowing eyes/skin
severe stomach/abdominal pain
persistent nausea/vomiting
dark urine
unusual weight loss
eye pain
vision changes

A very serious (possibly fatal) allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:

rash
itching/swelling (especially of the face/tongue/throat)
severe dizziness
trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.

In Canada, you may report side effects to Health Canada at 1-866-234-2345.