Side Effects of This Medicine

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. When this medicine is used for a short time, side effects are not generally serious. However, if this medicine is used for a long time and/or in high doses, other more serious side effects may occur.

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

Less common

Black, tarry stools; blood in urine or stools; cough or hoarseness accompanied by a fever or chills; pinpoint red spots on skin; skin rash, redness, itching or peeling; unusual bleeding or bruising

Rare

Vision changes; yellow discoloration of eyes and skin

Note:

Yellow discoloration of skin, without involvement of the eyes, may be due to the dye characteristics of quinacrine. Check with your doctor if you have questions about yellow discoloration.

Symptoms of Overdose

Get emergency help immediately if any of the following symptoms of overdose occur

Convulsions (seizures); fainting; irregular heartbeat

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome.

More Common

Abdominal or stomach cramps; diarrhea; dizziness; fever; headache; loss of appetite; nausea or vomiting

Quinacrine is a dye-like medicine and commonly causes yellow discoloration of the skin and urine, and darkening of the fingernails and toenails . These side effects are only temporary and will go away when you stop taking this medicine. However, if you notice yellow discoloration of your eyes, check with your doctor as soon as possible because medical attention may be required.

Less common

Chest pain (for injection form only)

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your doctor.