Levitra (vardenafil) belongs to a class of medications called phosphodiesterase (PDE) inhibitors. Vardenafil relaxes muscles found in the walls of blood vessels and increases blood flow to particular areas of the body.
Levitra works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection.
Some medicines can cause unwanted or dangerous effects when used with Levitra. Tell your doctor about all your other medicines, especially riociguat (Adempas).
Do not take Levitra if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as “poppers.” Taking vardenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure.
Call your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis.
Stop using this medicine and get emergency medical help if you have sudden vision loss.
You should not use Levitra if you are allergic to vardenafil, or if you take other medicines to treat pulmonary arterial hypertension, such as riociguat (Adempas).
Do not take Levitra if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate.
To make sure Levitra is safe for you, tell your doctor if you have ever had:
Get emergency medical help if you have signs of an allergic reaction to Levitra: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Levitra and get emergency medical help if you have:
Levitra may cause serious side effects. Stop using Levitra and call your doctor at once if you have: