Common side effects include:
These side effects may be minimized by starting with a lower dose and may improve or go away with time. Inform your healthcare professional if it becomes bothersome or does not go away.
Rare side effects include:
Very rarely, riociguat may cause abnormal bleeding. These symptoms may include one or more of the following:
Rarely, riociguat may cause low haemoglobin (a type of protein in red blood cells) levels. These symptoms may include one or more of the following:
The symptoms of a drug allergy include one or more of the following:
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.
Inform your healthcare professional if:
Avoid taking grapefruit or its juice when you are taking this medication as grapefruit may interact with your medication and increase the risk of side-effects.
If you are taking riociguat, you should avoid certain medications. Some examples are: nitrates (e.g. glyceryl trinitrate, isosorbide dinitrate, isosorbide mononitrate), phosphodiesterase-5 inhibitors (e.g. sildenafil, vardenafil, tadalafil), non-specific phosphodiesterase inhibitors (e.g. theophylline, dipyridamole).
Some medications may interact with riociguat and affect its effectiveness or increase the risk of side-effects. However, these medications may also be important for your treatment. Inform your healthcare professional of the other medications you are currently taking. Examples include:
Riociguat should be taken one hour apart from antacids (A type of medication used for reducing gastric acid).
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