Vardenafil, sold under the brand name Levitra among others, is a medication that is used for treating erectile dysfunction.

[1] Vardenafil's indications and contraindications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis).

Also, in rare cases, vardenafil use may cause priapism, a very painful emergency condition that can cause impotence if left untreated.

Thus, because of European Union trade rules, parallel imports might result in Vivanza sold next to Levitra in the EU.

An orally disintegrating form, marketed as Staxyn and Levitra Soft, has been gaining approvals in countries such as the United States[11] and Canada.