Siterone

Siterone (Cyproterone) is used to treat cancer of the prostate gland. The prostate gland is present only in males; therefore, females do not get prostate cancer. This medicine blocks the effect of the male hormone testosterone in the body. This decreases the amount of testosterone produced in the body and is one way of treating this type of cancer.

At first, Siterone (Cyproterone Acetate) often causes loss of strength and energy or tiredness. However, these effects are lessened after about the third month of treatment and it is very important that you continue to receive this medication. This medication should not be discontinued even if improvement of the disease occurs. The dose required will be different for different patients.

The dose that is used may depend on a number of things, including what the medicine is being used for, the patient`s body size, and whether or not other medicines are also being taken. If you are taking or receiving this medicine at home, follow your physician`s orders or the directions on the label. If you have any questions about the proper dose, ask your physician. Oral dosage form for treating prostate cancer is generally: 100 to 200 milligrams (mg) (2 to 4 tablets) a day divided into 2 to 3 doses and taken after meals.

Check with your physician as soon as possible if any of the following side effects occur while taking Siterone (Cyproterone Acetate):

Less common or rare: Abdominal pain or tenderness; agitation; back pain; black, tarry stools; blisters on skin; bloody urine; blurred vision; chest pain; chills; clay colored stools; confusion; cough; dark urine; decreased appetite; decreased urine output; difficulty swallowing; dilated neck veins; dizziness; drowsiness; dry mouth; fainting or light-headedness when getting up from a lying or sitting position; fast heartbeat; fatigue; fever; flushed, dry skin; fruit-like breath odor; general feeling of discomfort or illness; hallucinations; headache, sudden and severe; hives; inability to speak; increased blood pressure; increased hunger; increased thirst; increased urination; irregular breathing; irregular heartbeat; itching; loss of consciousness; lower back/side pain; mood or mental changes; nausea and vomiting; painful or difficult urination; pains in chest, groin, or legs, especially calves of legs; puffiness or swelling of the eyelids or around the eyes, face, lips or tongue; red, thickened, or scaly skin; seizures; shortness of breath; skin rash; slurred speech; sores, ulcers, or white spots on lips or in mouth; sore throat; stiff neck; stomachache; sudden loss of coordination; sweating; swelling of feet or lower legs; swollen and/or painful glands; temporary blindness; tightness in chest; unexplained weight loss; unusual bleeding or bruising; vision changes; weakness in arm and/or leg on one side of the body, sudden and severe; wheezing; yellow eyes or skin.

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 physician if any of the following side effects continue or are bothersome.

More Common: Decreased interest in sexual intercourse; inability to have or keep an erection; increase in sexual ability, desire, drive, or performance; increased interest in sexual intercourse; loss in sexual ability, desire, drive, or performance; swelling of the breasts or breast soreness in both females and males; unexpected or excess milk flow from breasts

Less common or rare: Bleeding, blistering, burning, coldness, or discoloration of skin; change in walking and balance; clumsiness or unsteadiness; hair loss; inability to move legs or arms; increased sensitivity of skin to sunlight; increase in bowel movements; loose stools; loss of strength or energy; muscle pain or weakness; paralysis of one side of the body; redness or other discoloration of skin; severe sunburn; soft stools; tiredness or weakness; unusual increase in hair growth; weight gain

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

Tell your physician if you have ever had any unusual or allergic reaction to Siterone (Cyproterone Acetate). Also tell your physician and pharmacist if you are allergic to any other substances, such as foods, preservatives, or dyes.