Vardenafil also does not have an effect on PDE6, which means that it does not have vision adverse effects. Other medications for ED, such as sildenafil , tadalafil and Stendra , offer similar effects to Levitra. This is a very uncommon side effect of PDE5 inhibitors. Of these, Levitra and generic vardenafil only accounted for a small number of cases of priapism related to ED medication. Sildenafil was approved by the FDA to treat erectile dysfunction back in , making it the oldest of the three most widely used ED medications used today. However, vardenafil, sold under the brand name Levitra, comes in several doses for different applications.Brand name: $ to $1, for ten to thirty 10 mg tablets Generic: $ to $ for ten 10 mg tablets But your out-of-pocket cost for Levitra may depend on a few Missing: online. · Levitra should be taken approximately 60 minutes before sex, either with or without food. Make sure that you’re familiar with how to use Levitra before taking it prior to sex. Look into other ED medications. Other medications for ED, such as sildenafil, tadalafil and Stendra, offer similar effects to Levitra. Depending on your personal needs. · General Dose Information. For most patients, the recommended starting dose of LEVITRA is 10 mg, taken orally, as needed, approximately 60 minutes before sexual activity. The dose may be increased to a maximum recommended dose of 20 mg or decreased to 5 mg based on efficacy and side effects. The maximum recommended .