When Did Levitra Receive FDA Approval?
Levitra, also known by its generic name vardenafil, received FDA approval on October 21, 2003. It is used to treat erectile dysfunction [1].
What Is Levitra Used For?
Levitra is prescribed to help adult men with erectile dysfunction, a condition where a man cannot achieve or maintain an erection sufficient for satisfactory sexual performance [1]. It works by increasing blood flow to the penis during sexual stimulation [2].
How Does Levitra Work?
Levitra belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors [2]. The medication functions by blocking the action of an enzyme called PDE5, which is found in the penis. By inhibiting PDE5, Levitra allows for the relaxation of smooth muscles in the penis, facilitating increased blood flow and enabling an erection when sexual stimulation is present [3].
What Are the Potential Side Effects of Levitra?
Common side effects associated with Levitra use include headache, flushing, nasal congestion, and visual disturbances, such as blurred vision or increased sensitivity to light [2]. More serious, though less common, side effects can include priapism (a prolonged erection lasting more than four hours), sudden vision loss in one or both eyes, and sudden hearing decrease or loss [4].
Are There Any Contraindications for Levitra Use?
Levitra should not be taken by individuals using nitrate medications, such as nitroglycerin, isosorbide mononitrate, or isosorbide dinitrate, as the combination can lead to a dangerous drop in blood pressure [2]. It is also contraindicated in patients with known hypersensitivity to vardenafil or any of its inactive ingredients [4].
What is the Difference Between Levitra and Other Erectile Dysfunction Medications?
Levitra (vardenafil) is a PDE5 inhibitor, similar to Viagra (sildenafil) and Cialis (tadalafil) [5]. While they share the same mechanism of action, differences exist in their onset of action, duration of effect, and metabolic pathways [6]. For example, Cialis has a longer half-life than Levitra and Viagra, allowing for a longer treatment window [7]. DrugPatentWatch.com tracks patent information for these and other medications, which can impact their market availability and the introduction of generic versions [8].