Medical Reviewer: John P. Cunha, DO, FACOEP Last updated on RxList: 11/24/2021
Aloprim Side Effects Center

What Is Aloprim?

Aloprim (allopurinol sodium) for Injection is a xanthine oxidase inhibitor used to manage patients with leukemia, lymphoma, and solid tumor malignancies who are receiving cancer therapy which causes elevations of serum and urinary uric acid levels and who cannot tolerate oral therapy. Aloprim is available in generic form.

What Are Side Effects of Aloprim?

Common side effects of Aloprim include:

  • injection site reactions
  • rash
  • hives
  • allergic reaction
  • itching
  • diarrhea
  • nausea
  • vomiting, or
  • kidney problems

Dosage for Aloprim

The recommended adult dose of Aloprim is 200 to 400 mg/m2/day, with a maximum dose of 600 mg/day. The recommended pediatric starting dose of Aloprim is 200 mg/m2/day.

What Drugs, Substances, or Supplements Interact with Aloprim?

Aloprim may interact with mercaptopurine, azathioprine, dicumarol, uricosuric agents, diuretics, cyclophosphamide and other cytotoxic agents, chlorpropamide, and cyclosporine. Tell your doctor all medications and supplements you use.

Aloprim During Pregnancy and Breastfeeding

During pregnancy, Aloprim should be used only if prescribed. Aloprim passes into breast milk. The effect of Aloprim on the nursing infant is unknown. Nursing mothers should exercise caution. Consult your doctor before breastfeeding.

Additional Information

Our Aloprim (allopurinol sodium) for Injection Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


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Aloprim Consumer Information

Stop using this medicine and get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).

Seek medical treatment if you have a serious drug reaction that can affect many parts of your body. Symptoms may include: skin rash, fever, swollen glands, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes.

Stop using allopurinol and call your doctor at once if you have:

  • any skin rash, no matter how mild;
  • painful urination, blood in the urine;
  • little or no urination;
  • easy bruising, unusual bleeding;
  • numbness, tingling, burning pain;
  • worsening gout symptoms; or
  • liver problems--loss of appetite, weight loss, stomach pain (upper right side), itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Common side effects may include:

  • an increase in gout attacks when you first starting taking allopurinol oral;
  • rash;
  • drowsiness;
  • fever, chills;
  • abnormal liver function tests;
  • nausea, diarrhea; or
  • joint pain.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Aloprim (Allopurinol Sodium for Injection)

Aloprim Professional Information


In an uncontrolled, compassionate plea protocol, 125 of 1,378 patients reported a total of 301 adverse reactions while receiving ALOPRIM (allopurinol sodium) for Injection. Most of the patients had advanced malignancies or serious underlying diseases and were taking multiple concomitant medications. Side effects directly attributable to ALOPRIM (allopurinol sodium) for Injection were reported in 19 patients. Fifteen of these adverse experiences were allergic in nature (rash, eosinophilia, local injection site reaction). One adverse experience of severe diarrhea and one incidence of nausea were also reported as being possibly attributable to ALOPRIM (allopurinol sodium) for Injection. Two patients had serious adverse experiences (decreased renal function and generalized seizure) reported as being possibly attributable to ALOPRIM (allopurinol sodium) for Injection.

A listing of the adverse reactions regardless of causality reported from clinical trials follows:

Incidence Greater Than 1%

Cutaneous/Dermatologic: rash (1.5%)

Genitourinary: renal failure/insufficiency (1.2%)

Gastrointestinal: nausea (1.3%), vomiting (1.2%)

Incidence Les s Than 1%

Body as Whole: fever, pain, chills, alopecia, infection, sepsis, enlarged abdomen, mucositis/pharyngitis, blast crisis, cellulitis, hypervolemia

Cardiovascular: heart failure, cardiorespiratory arrest, hypertension, pulmonary embolus, hypotension, decreased venous pressure, flushing, headache, stroke, septic shock, cardiovascular disorder, ECG abnormality, hemorrhage, bradycardia, thrombophlebitis, ventricular fibrillation

Cutaneous/Dermatologic: urticaria, pruritus, local injection site reaction

Gastrointestinal: diarrhea, gastrointestinal bleeding, hyperbilirubinemia, splenomegaly, hepatomegaly, intestinal obstruction, jaundice, flatulence, constipation, liver failure, proctitis

Genitourinary: hematuria, increased creatinine, oliguria, kidney function abnormality, urinary tract infection

Hematologic: leukopenia, marrow aplasia, thrombocytopenia, eosinophilia, neutropenia, anemia, pancytopenia, ecchymosis, bone marrow suppression, disseminated intravascular coagulation

Metabolic: hypocalcemia, hyperphosphatemia, hypokalemia, hyperuricemia, electrolyte abnormality, hypercalcemia, hyperglycemia, hypernatremia, hyponatremia, metabolic acidosis, edema, glycosuria, hyperkalemia, lactic acidosis, water intoxication, hypomagnesemia

Neurologic: seizure, status epilepticus, myoclonus, twitching, agitation, mental status changes, cerebral infarction, coma, dystonia, paralysis, tremor

Pulmonary: respiratory failure/insufficiency, ARDS, increased respiration rate, apnea

Musculoskeletal: arthralgia

Other: hypotonia, diaphoresis, tumor lysis syndrome

The most frequent adverse reaction to oral allopurinol is skin rash. Skin reactions can be severe and sometimes fatal. Therefore, treatment with ALOPRIM (allopurinol sodium) for Injection should be discontinued immediately if a rash develops (see WARNINGS). For further details on hypersensitivity reactions to treatment with oral allopurinol, refer to the package insert for allopurinol tablets.

Read the entire FDA prescribing information for Aloprim (Allopurinol Sodium for Injection)

© Aloprim Patient Information is supplied by Cerner Multum, Inc. and Aloprim Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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