letairis

This medicine is an endothelin receptor antagonist used to treat high blood pressure in the lungs (pulmonary arterial hypertension) in certain patients.

This medicine is an endothelin receptor antagonist used to treat high blood pressure in the lungs (pulmonary arterial hypertension) in certain patients.
CAUTIONS: DO NOT TAKE THIS MEDICINE if you have had an allergic reaction to it or if you are allergic to any ingredient in this product. DO NOT EXCEED THE RECOMMENDED DOSE of this medicine without checking with your doctor. DO NOT STOP TAKING THIS MEDICINE unless your doctor tells you to. Laboratory and/or medical tests, including liver function tests, hemoglobin levels, and hematocrit levels, may be performed while you take this medicine to monitor for side effects. KEEP ALL DOCTOR AND LABORATORY APPOINTMENTS while you are taking this medicine. BEFORE YOU HAVE ANY MEDICAL OR DENTAL TREATMENTS, emergency care, or surgery, tell the doctor or dentist that you are using this medicine. SERIOUS LIVER PROBLEMS have been reported with other medicines that are similar to this medicine (eg, bosentan). Contact your doctor right away if you develop symptoms of liver problems such as nausea, vomiting, loss of appetite, fever, stomach pain, yellowing of the skin or eyes, dark urine, pale stools, itching, or unusual tiredness or achiness. Discuss any questions or concerns with your doctor. SOME MEN TAKING ANOTHER MEDICINE SIMILAR TO THIS MEDICINE (BOSENTAN) have experienced a decrease in sperm count. A low sperm count may decrease the ability to father a child. It is not known if this medicine may cause the same effect on sperm count. Discuss any questions or concerns with your doctor. WOMEN WHO ARE ABLE TO BECOME PREGNANT must have a negative pregnancy test before they start to take this medicine, and monthly while they are taking it. Talk with your doctor for more information. WOMEN WHO ARE ABLE TO BECOME PREGNANT MUST USE 2 EFFECTIVE FORMS OF BIRTH CONTROL while they take this medicine and for at least 1 month after they stop taking it. Talk with your doctor about the use of effective birth control while you use this medicine. Talk with your doctor right away if you miss a menstrual period, if you have unprotected sex, if you think your birth control has failed, or think you may be pregnant. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE, either prescription or over-the-counter, check with your doctor. CAUTION IS ADVISED WHEN USING THIS MEDICINE IN THE ELDERLY because they may be more sensitive to the effects of the medicine, especially swelling of the arms, hands, legs, or feet. FOR WOMEN: DO NOT TAKE THIS MEDICINE if you are pregnant. It may cause harm to the human fetus. Avoid becoming pregnant while you are taking this medicine. IF YOU SUSPECT THAT YOU COULD BE PREGNANT, contact your doctor immediately. IT IS UNKNOWN IF THIS MEDICINE IS EXCRETED in breast milk. DO NOT BREAST-FEED while taking this medicine.
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