Drug Interaction Report

Eltrombopag may increase the blood levels of riociguat. You may be more likely to experience serious side effects such as low blood pressure and bleeding. The risk of other side effects such as dizziness, lightheadedness, fainting, headache, flushing, palpitation, nasal congestion, upset stomach, and constipation may also increase. Talk to your doctor if you have any questions or concerns. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Food may reduce the absorption and blood levels of eltrombopag. In addition, minerals such as aluminum, calcium, iron, magnesium, and zinc can also interfere with eltrombopag absorption into the bloodstream, which may make the medication less effective in treating your condition. You should take eltrombopag on an empty stomach one hour before or two hours after a meal. Eltrombopag should also be taken at least 2 hours before or 4 hours after products like antacids, mineral supplements, dairy products, and fortified juices. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Chemical substances present in cigarette smoke may reduce the blood levels of riociguat. This means that the medication may be less effective if you smoke during treatment. Let your doctor know if you are a smoker, or if you start smoking or stop smoking during treatment with riociguat, because the dosage may need to be adjusted. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Food may affect the absorption and blood levels of riociguat. To avoid significant fluctuations in blood levels of the medication, riociguat should be taken about the same time each day consistently either with or without food.