Used as prescribed, Levitra is a safe and effective medication for treating ED that rarely causes anything more than minor side effects. Consider other treatment options for ED. Vardenafil is taken only when needed, about 60 minutes before sexual activity. The medicine can help achieve an erection when sexual stimulation occurs. Avoid consuming grapefruit products and orange marmalades. An erection will not occur just by taking a pill.Refill and transfer prescriptions online or find a CVS Pharmacy near you. Shop online, see ExtraCare deals, find MinuteClinic locations and g: levitra. • LEVITRA is taken as needed: For most patients, the starting dose is 10 mg, up to once daily. Increase to 20 mg or decrease to 5 mg based on efficacy/tolerability. () • A starting dose of 5 mg LEVITRA should be considered in patients ≥65 years of age. () • LEVITRA is taken orally, approximately 60 minutes before sexual activity. A new drug application (NDA) for vardenafil was submitted to the FDA in September The other new PDE5 inhibitor is tadalafil. It has a unique chemical structure and a pharmacokinetic and pharmacodynamic profile that differs from both sildenafil and vardenafil. The manufacturer of tadalafil submitted an NDA for it in June