What is KYZATREX®?
KYZATREX® (testosterone undecanoate) is a prescription drug that is used to treat adult men who have low or no testosterone levels due to certain medical conditions.
KYZATREX® is a controlled substance (CIII) because it contains testosterone.
It is not known if KYZATREX® is safe or effective in males younger than 18 years old. Improper use may affect bone growth in children.
It is not known if KYZATREX® is safe or effective in men with "age-related hypogonadism" (also referred to as "late-onset hypogonadism").
KYZATREX® is not meant for use by women.
Important Safety Information for KYZATREX®
Do not take KYZATREX® if you: have breast cancer; have or might have prostate cancer; are a woman who is pregnant (KYZATREX may harm your unborn baby); or are allergic to KYZATREX® or any of its ingredients.
Before you take KYZATREX®, tell your healthcare provider about all of your medical conditions, including if you: have high blood pressure or are treated for high blood pressure; have a history of diabetes; have heart problems; have high red blood cell count (hematocrit) or high hemoglobin laboratory value; have urinary problems due to an enlarged prostate; have liver or kidney problems; or have problems breathing while you sleep (sleep apnea).
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Taking KYZATREX® with certain other medicines can affect each other. Especially, tell your healthcare provider if you take: insulin; medicines that decrease blood clotting (blood thinners); corticosteroids; or medicines that increase blood pressure, such as some cold medicine and pain medicines.
KYZATREX® may cause other serious side effects including:
- Increase in red blood cell count (hematocrit) or hemoglobin, which can increase the risk of blood clots, strokes, and heart attacks. You may need to stop KYZATREX® if your red blood cell count increases.
- If you already have an enlarged prostate, your signs and symptoms may worsen while taking KYZATREX®. These may include: increased urination at night; trouble starting your urine stream; urinating many times during the day; urge to go to the bathroom right away; a urine accident; inability to pass urine or weak urine flow.
- Increased risk of prostate cancer.
- Blood clots in the legs or lungs. Signs and symptoms of a blood clot in your leg can include pain, swelling or redness. Signs and symptoms of a blood clot in your lungs can include difficulty breathing or chest pain.
- Abuse. Testosterone can be abused when taken at higher than prescribed doses and when used with other anabolic androgenic steroids. Abuse can cause serious heart and psychological side effects.
- In large doses, KYZATREX® may lower your sperm count.
- Liver problems. Symptoms of liver problems may include: nausea or vomiting; yellowing of your skin or whites of your eyes; dark urine; pain on the right side of your stomach area (abdominal pain).
- Swelling of your ankles, feet, or body (edema), with or without heart failure.
- Enlarged or painful breasts.
- Breathing problems while you sleep (sleep apnea).
Call your healthcare provider right away if you have any of the serious side effects listed above.
The most common side effect of KYZATREX® is high blood pressure. Other side effects may include: headache, joint or back pain, diarrhea, increased red blood cell count, anxiety, constipation, swelling of the legs, and increased prostate specific antigen (PSA) levels.
These are not all the possible side effects of KYZATREX®. For more information, ask your healthcare provider or pharmacist.
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