Cialis can be a long acting medication and can always be active on the body for approximately 36 hrs. Both tadalafil and Cialis have been used to address erectile dysfunction and benign prostatic hyperplasia (BPH), and enlargement of the prostate gland that can lead to difficulty urinating. Tadalafil is the form of the brand Cialis. Both medications function from the body. When some patients are worried with how well tadalafil works, the FDA comes with a very rigorous process before they hit on the marketplace for reviewing generic drugs. This process guarantees that medications contain the same active ingredients because their brand-name counter parts, so that there are differences between them. If you've never tried buying cialis online before, your physician will probably start you about a minimal dose, like 2.5 mg or 5 milligrams. The 20 mg tablet could be your maximum strength and it is not preferred because it's the potential to cause erections which last the day. Some medications might interact with all nutrients utilized in grapefruits, also tadalafil is one of them. Tadalafil, the active ingredient in Cialis, is broken down in the liver using a group of enzymes, but elements in grapefruits can alter these enzymes process medications and cause a build-up of tadalafil. This may boost your risk for experiencing unwanted effects. Cialis is really a form of medication called a PDE5 inhibitor that is used in the treatment of benign prostatic hyperplasia and erectile dysfunction. It will come in a number of different dosages and may be obtained either daily or as-needed for erection dysfunction. As more men can afford tadalafil and treat their own ED, it's likely that many could have questions. Generic tadalafil is over 50 percent more affordable than brand name Cialis.