More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. Knowledge is Power It’s imperative to consult a healthcare professional before starting any medication, including Cialis. Privacy: Confirm that your personal data and payment details are confidential. It is therefore essential that you check every combination with your physician who will let you know whether Levitra can be used concomitantly with the medications you are already using. We also looked at additional services, such as access to digital pharmacies and home delivery options. Over 60 per cent of all spam mail is about erectile dysfunction medication, and most of them offer, not Levitra or other pharmaceuticals, but natural medication, they say is more effective. Swallow several times as the tablet dissolves.The cost for Levitra oral tablet 20 mg is around $16 for a supply of 2 tablets, depending on the pharmacy you visit. Quoted prices are for cash-paying customers and are not valid with insurance plans. This price guide is based on using the test1.ru discount card which is accepted at most U.S. pharmacies. It contains the same active ingredient as Levitra and can begin working in about 15 minutes. Viagra takes around 30 minutes to become effective and lasts about 4 hours. Cialis lasts much longer. You save 99% off the average U.S. pharmacy retail price of $ per tablet for 90 tablets. Vardenafil International Price Comparison Highlight. Lowest U.S. Pharmacy Coupon Price: $ per tablet for 90 tablets. Lowest International Mailorder Pharmacy Price: $ per pill/unit for 90 pill/units. Currently Viewing.