Altretamine Side Effects

Not all side effects for altretamine may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to altretamine: oral capsule

Along with its needed effects, altretamine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Also, because of the way these medicines act on the body, there is a chance that they might cause other unwanted effects that may not occur until months or years after the medicine is used. These delayed effects may include certain types of cancer, such as leukemia. Discuss these possible effects with your doctor.

Check with your doctor immediately if any of the following side effects occur while taking altretamine:

Less common or rare
  • Black, tarry stools
  • blood in urine or stools
  • cough or hoarseness, accompanied by fever or chills
  • fever or chills
  • lower back or side pain, accompanied by fever or chills
  • painful or difficult urination, accompanied by fever or chills
  • pinpoint red spots on skin
  • unusual bleeding or bruising
  • unusual tiredness

Check with your doctor as soon as possible if any of the following side effects occur while taking altretamine:

More common
  • Anxiety
  • clumsiness
  • confusion
  • convulsions (seizures)
  • dizziness
  • mental depression
  • numbness in arms or legs
  • weakness
  • Skin rash or itching

Some side effects of altretamine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
  • Nausea and vomiting
Less common
  • Diarrhea
  • loss of appetite
  • stomach cramps

For Healthcare Professionals

Applies to altretamine: oral capsule


Gastrointestinal side effects include nausea and vomiting (33%), and increased alkaline phosphatase (9%).

Nervous system

Nervous system side effects include peripheral sensory neuropathy (31%), anorexia and fatigue (1%), and seizures (1%).


Hematologic side effects include anemia (33%), thrombocytopenia (9%), and leukopenia (5%).


Renal side effects include serum creatinine levels of 1.6 to 3.75 mg/dl (7%) and increased blood urea nitrogen levels (9%).

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.