Do not use in larger or smaller amounts or for longer than recommended. Heat and damp can destroy some medicines. Talk to your doctor or pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products. Avoid medication errors by using only the form and strength your doctor prescribes. A couple of quick swings in one direction should be enough. It is not possible to determine whether these events were related directly to the use of PDE5 inhibitors or to other factors.In combination with sexual stimulation, vardenafil works by increasing blood flow to the penis to help a man get and keep an drug does not protect against sexually transmitted. Generic Name: Vardenafil Reviewed: March 21, Vardenafil is used in adult men to treat erectile dysfunction (impotence). Vardenafil may also be used for purposes not listed in this medication. MNT ‘s review. Lemonaid sells Cialis in these forms: Cialis: available in doses of 5, 10, and 20 mg, starting at $65 per tablet. Daily Cialis: 5 mg tablet with pricing starting from $50 per tablet.