When choosing one, tell your doctor or other health care professional what your preferences are, such as cost, ease of use, how long the drug’s effects last and side effects. Often, these are prescribed for chest pain called angina. Stendra avanafil : This is an as-needed medication taken 30 minutes before sex and can last up to six hours. Patients should be advised to contact their healthcare provider for dose modification if they are not satisfied with the quality of their sexual performance with LEVITRA or in the case of an unwanted effect. People with heart conditions should never take ED medications without consulting a doctor.Sildenafil (Viagra) has a half-life of 4 hours and vardenafil (Levitra) has a half-life of hours while tadalafil (Cialis) has a half-life of hours. This means that vardenafil (Levitra) should act longer than sildenafil (Viagra) but the clinical significance is not known. Cialis, tadalafil, Viagra, sildenafil, Stendra, Levitra, vardenafil: Yes: GoodRx Best Low Cost: Starting at $ per dose; $19 to $59 for consultations: Yes: Viagra, Cialis, Levitra: Yes: Blink Health Fastest Delivery: $10 for initial consult and first month of medication; $ per month + prescription cost after that: Yes: Sildenafil. LEVITRA (vardenafil HCl) is formulated as orange, film-coated round tablets with debossed “BAYER” cross on one side and “10” and “20” on the other side equivalent to 10 mg and 20 mg of vardenafil, respectively. Vardenafil HCl (Levitra) 10mg tablets are supplied in bottles of 2, 4, 6, 12 and 18 tablets per bottle.