Cialis is a long acting medication and will always be busy in the body for approximately 36 hrs. Both tadalafil and Cialis are used to address erectile dysfunction and benign prostatic hyperplasia (BPH), and enhancement of the prostate gland that may lead to difficulty urinating. Tadalafil is the standard type of the brand Cialis. Both medications perform similarly from your system. The FDA has a very rigorous process for reviewing generic medication before they hit on the marketplace, while some patients are worried about how well standard tadalafil works. This process helps to ensure that generic medications contain the same active ingredients because of their brand name counter parts, in order that there are hardly any differences between these. When you've never tried Cialis before, your doctor will probably start you about a very low dose, like 2.5 mg or 5 mg. The 20 mg tablet could be your strength that is highest and it is not preferred because it's the potential to cause erections that last a day. Some medications can interact with all nourishment found in grapefruits, and tadalafil is one of them. The active ingredient in Cialis, tadalafil, is broken down in the liver using a group of enzymes, but elements in grapefruits can change these enzymes process medications and make a build-up of tadalafil. This may increase your risk. Cialis is really a kind of drug known as a PDE 5 inhibitor that is used as a treatment for erectile dysfunction and benign prostatic hyperplasia. It is available in different doses and can be taken either daily or orally to get erection dysfunction. It's very likely that many may have questions, as men can afford tadalafil and treat their own ED. Generic tadalafil is over 50% more affordable than buy cialis.