Vardenafil (<=2.5 mg)/Potent CYP3A4 Inhibitors
This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment.
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:
Some medicines may slow down how quickly your liver processes vardenafil.
What might happen:
Your blood levels of vardenafil may increase and cause harmful effects.
What you should do about this interaction:
Let your healthcare professionals (e.g. doctor or pharmacist) know you are using these medicines together. If your doctor decides that it is safe for you to use these medicines together, you may need to decrease the dose of vardenafil you can safely take. Discuss this with your doctor or pharmacist. Contact your doctor if you experience a painful or prolonged erection, fainting, dizziness, or changes in vision.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
1.Levitra (vardenafil hydrochloride) US prescribing information. Bayer Pharmaceuticals Corporation October, 2007.
2.Levitra (vardenafil hydrochloride) Canadian prescribing information. Bayer, Inc. October 24, 2006.
3.Levitra (vardenafil hydrochloride trihydrate) UK summary of product characteristics. Bayer plc December 20, 2006.