Jatenzo can cause mild or severe side effects. The following lists contain some of the main side effects that can occur when taking Jatenzo. These lists do not include all possible side effects.
For more information about the possible side effects of Jatenzo, talk to your doctor or pharmacist. They can give you advice on how to deal with side effects that may be concerning or bothersome.
To note: The Food and Drug Administration (FDA) tracks the side effects of drugs it has approved. If you would like to notify the FDA about a side effect you have had with Jatenzo, you can do so via MedWatch.
Mild side effects
Mild side effects* of Jatenzo may include:
- stomach pains
- swelling of the ankles, feet, or lower legs
Most of these side effects may disappear within a few days or weeks. But if they get worse or don’t go away, talk to your doctor or pharmacist.
*This is a partial list of mild Jatenzo side effects. For more information about other mild side effects, talk to your doctor or pharmacist, or read the Jatenzo package leaflet. medication guide.
Serious side effects
Serious side effects from Jatenzo are not common, but they can occur. Call your doctor right away if you experience any serious side effects. Call 911 or your local emergency number if your symptoms are life-threatening or you think you have a medical emergency.
Serious side effects and their symptoms may include:
- Liver problems, such as jaundice or inflammation of the liver (hepatitis). Symptoms may include:
- jaundice (yellowing of the skin or the whites of the eyes)
- pain on the right side of your abdomen (tummy)
- Enlarged prostate. Symptoms can include:
- difficulty urinating or weak urine flow
- waking up more often at night to urinate
- urinate several times during the day
- Increased number of red blood cells or hemoglobin level. A high red blood cell count can increase your risk of stroke, blood clots, and heart attack. Your doctor will monitor you for high levels of red blood cells and hemoglobin while you are taking Jatenzo.
- Gynecomastia (abnormally enlarged breasts). Symptoms can include:
- Sleep Apnea. Symptoms can include:
- snoring, coughing, or choking while sleeping
- Allergic reaction.*
- Increase in blood pressure.*†
- Blood clots.*
- Decreased sperm count.*
- Mood changes. Symptoms may include:
* For more information on this side effect, see ‘Details of side effects’ below.
† Jatenzo has a
Details of side effects
Here are some details about some side effects that this drug can cause.
Increased blood pressure
Some people taking Jatenzo may experience an increase in blood pressure. Jatenzo has a boxed warning for this side effect. This is the most serious warning from the Food and Drug Administration (FDA).
Increased blood pressure was a commonly reported side effect in people taking Jatenzo in combination. Clinical studies. Most people who experienced this side effect had only small increases in blood pressure. However, a few people have had to either start new blood pressure medications or have their current blood pressure medications increased.
However, even small increases in blood pressure can increase your risk of heart attack or stroke. In rare cases, a heart attack or stroke can be fatal.
Before you start taking Jatenzo, your doctor should check your heart health and blood pressure to make sure Jatenzo is safe for you. He will need to check your blood pressure again in 3 weeks and each time your dose of Jatenzo changes.
If you develop high blood pressure while taking Jatenzo, your doctor may prescribe new medicines to treat it. If you are already taking medicines for high blood pressure, your dose may need to be increased during your treatment with Jatenzo.
If your blood pressure gets too high or you develop other heart problems while taking Jatenzo, your doctor will likely tell you to stop taking the medicine. They may suggest another treatment for your condition.
Taking Jatenzo may cause blood clots in some people. Although this side effect has not been reported in Clinical studiesit has been reported since the drug was approved.
Some people taking Jatenzo have developed blood clots in the legs or lungs. Symptoms of a blood clot in your leg may include swelling, pain, and redness or discoloration. Symptoms of a blood clot in the lungs may include chest pain and shortness of breath.
Before prescribing Jatenzo, your doctor will review your medical history to assess your risk of blood clots. Be sure to tell them about any medical conditions you currently have or have had in the past. If you develop blood clot symptoms while taking Jatenzo, call your doctor immediately. Your doctor will ask you to stop taking Jatenzo and will treat your blood clot.
Call 911 or your local emergency number if your symptoms are life-threatening or you think you have a medical emergency.
After the blood clot is treated, you and your doctor can discuss the risks and benefits of treatments for your low testosterone.
Reduced sperm count
It is possible that taking Jatenzo may reduce sperm count. This was not reported in Clinical studies people using Jatenzo. However, a decrease in sperm count has been reported in people using other testosterone replacement therapies. Based on how Jatenzo works, it could also lead to a decrease in sperm count.
People using testosterone replacement therapy have also experienced reduced fertility (the natural ability to have a child). This can also happen with Jatenzo. You and your doctor should discuss this risk before you start taking Jatenzo. Depending on your situation, your doctor may recommend a different treatment for your condition.
As with most medicines, some people may have an allergic reaction after taking Jatenzo.
Symptoms of a mild allergic reaction may include:
- itchy skin
- hot flashes (temporary warmth, redness or deepening of skin color)
A more serious allergic reaction is rare but possible. Symptoms of a severe allergic reaction may include:
- swelling under the skin, usually in the eyelids, lips, hands, or feet
- swelling of the tongue, mouth or throat
- difficulty breathing
Call your doctor right away if you have an allergic reaction to Jatenzo, as the reaction could become serious. Call 911 or your local emergency number if your symptoms are life-threatening or you think you have a medical emergency.