Get emergency medical help if you have signs of an allergic reaction to Jatenzo: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Jatenzo can increase your blood pressure, which can increase your risk of heart attack, stroke, or death. You may need to stop using Jatenzo or start taking blood pressure medication.
Call your doctor at once if you have:
swelling in your feet, ankles or legs;
pain or swelling in your breasts;
breathing problems during sleep (breathing may stop);
unusual changes in mood or behavior, new or worsening depression, thoughts about hurting yourself;
liver problems - nausea, vomiting, stomach pain (upper right side), dark urine, jaundice (yellowing of the skin or eyes);
signs of a blood clot in the lung - chest pain, sudden cough, wheezing, rapid breathing, coughing up blood;
signs of a blood clot deep in the body - pain, swelling, warmth, or redness in your leg; or
worsening symptoms of an enlarged prostate - increased urination, a weak stream of urine, an urgent need to urinate, or loss of bladder control.
Common Jatenzo side effects may include:
increased red blood cell counts;
an enlarged prostate;
erections that are more frequent or that last longer than usual;
increased blood pressure;
nausea, heartburn, burping;
diarrhea;
headache; or
swelling in your lower legs.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Jatenzo side effects (more detail)
