The generic versions are just as effective and much less expensive. The body takes longer to absorb it after a high-fat meal or alcohol. Cialis tadalafil : This ED medication works with the same principle as Viagra, but lasts up to 36 hours. Often, these are prescribed for chest pain called angina. We also looked at additional services, such as access to digital pharmacies and home delivery options.Tadalafil (Cialis) is used to treat erectile dysfunction (ED, impotence; inability to get or keep an erection), and the symptoms of benign prostatic hyperplasia (BPH; an enlarged prostate) which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency in adult men. The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. A generic version of Cialis is available. See tadalafil prices (from $ for 30 tablets). Cialis prices Oral Tablet. mg Cialis oral tablet. from $ for 30 or free samples. Certain offers may be printable from a site while others may require registration, completing a questionnaire, or obtaining a sample from a medical.