Moderate. These medicines may cause some risk when taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
When these two medicines are taken together, your body may not process your alprazolam properly.
What might happen:
The blood levels of alprazolam may increase. This may cause toxic effects such as drowsiness, slurred speech, incoordination, or difficulty breathing.
What you should do about this interaction:
Contact your healthcare professionals (e.g. doctor or pharmacist) as soon as possible about taking these two medicines together. They may already be aware of this drug interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
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5.Incivek (telaprevir) US prescribing information. Vertex Pharmaceuticals Incorporated October, 2013.