Alcohol inherently causes difficulty in the initiation of an erection. Kindly consult your doctor if a dose is consumed by mistake. Additionally, it is a depressor of the central nervous system, leading to a fall in blood pressure and dizziness, thereby exaggerating the side effects of Levitra 10 mg tablet. What should I do if I missed a dose of Levitra Vardenafil? More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. · Levitra works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. Levitra is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Levitra does not cure erectile dysfunction or increase sexual g: india. LEVITRA 10 mg – 20 mg Vardenafil Tablets, Erectile Dysfunction. The active drug ingredient in Levitra is vardenafil. Vardenafil is a PDEs inhibitor used for treating erectile dysfunction that is sold under the trade names Vivanza, Staxyn and Levitra. It is a prescription medicine to treat impotence. Generic Availability. Print Save. Generic Levitra Availability. Last updated on Levitra is a brand name of vardenafil, approved by the FDA in the following formulation (s): LEVITRA (vardenafil hydrochloride – tablet;oral) Manufacturer: BAYER HLTHCARE. Approval date: August 19, Missing: india.