Generic Name: arsenic trioxide

What is the most important information I should know about arsenic trioxide?

Arsenic trioxide should only be administered under the supervision of a qualified healthcare provider experienced in the use of cancer chemotherapeutic agents.

Serious side effects have been reported with the use of arsenic trioxide including: allergic reactions (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); acute promyelocytic leukemia (APL) differentiation syndrome (fever, shortness of breath, weight gain, and lung problems); heart problems; and others. Talk to your doctor about the possible side effects from treatment with arsenic trioxide.

What is arsenic trioxide?

Arsenic trioxide is a cancer medication. Arsenic trioxide interferes with the growth of cancer cells and slows their growth and spread in the body.

Arsenic trioxide is used in the treatment of acute promyelocytic leukemia (APL).

Arsenic trioxide may also be used for purposes other than those listed in this medication guide.

What should I discuss with my healthcare provider before taking arsenic trioxide?

Serious side effects have been reported with the use of arsenic trioxide including: allergic reactions (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); acute promyelocytic leukemia (APL) differentiation syndrome (fever, shortness of breath, weight gain, and lung problems); heart problems; and others. Talk to your doctor about the possible side effects from treatment with arsenic trioxide.

Do not use arsenic trioxide without first talking to your doctor if you have

• heart disease (especially irregular heartbeats or a long QT interval);

• liver disease; or
• kidney disease.

You may not be able to use arsenic trioxide, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.

Arsenic trioxide is in the FDA pregnancy category D. This means that it is known to be harmful to an unborn baby. Do not use arsenic trioxide without first talking to your doctor if you are pregnant or could become pregnant during treatment. Arsenic trioxide passes into breast milk and may be harmful to a nursing baby. Do not take arsenic trioxide without first talking to your doctor if you are breast-feeding a baby.

How should I use arsenic trioxide?

Arsenic trioxide should only be administered under the supervision of a qualified healthcare provider experienced in the use of cancer chemotherapeutic agents.

Arsenic trioxide is administered intravenously.

Your doctor will determine the correct amount and frequency of treatment with arsenic trioxide depending upon the type of cancer being treated and other factors. Talk to your doctor if you have any questions or concerns regarding the treatment schedule.

Your doctor may want you to have blood tests or other medical evaluations before starting and periodically during treatment with arsenic trioxide to monitor progress and side effects.

Your healthcare provider will store arsenic trioxide as directed by the manufacturer. If you are storing arsenic trioxide at home, follow the directions provided by your healthcare provider.

What happens if I miss a dose?

Contact your doctor if you miss a dose of arsenic trioxide.

What happens if I overdose?

If for any reason an overdose of arsenic trioxide is suspected, seek emergency medical attention or contact your healthcare provider immediately.

Symptoms of a arsenic trioxide overdose may include muscle weakness, confusion, and convulsions.

What should I avoid while using arsenic trioxide?

Other drugs that affect the way the heart beats may interact with arsenic trioxide and increase the risk of dangerous irregular heartbeats. Do not take any other prescription or over-the-counter medications, including herbal products, during treatment with arsenic trioxide without first talking to your doctor.