Tadalafil enhances the rush of the blood to the penis by widening penile arteries, which allows a man to reach erection. Cialis comes in tablets of 10mg or 20mg, but at the discretion of a doctor a man may be prescribed to take 2.5mg or 5mg every day. Food doesn’t influence the effect of Tadalafil, so it can be taken before, during or after eating. With a carefulness it is necessary to apply tadalafil for patients with predisposition (for example, at a ischemia, plural or leukemia) or for patients with anatomic deformation of penis (for example, at fibrosis or illness). A patient must be informed about the necessity of immediate address to the doctor in case of origin of erection, proceeding to 4 and more. Ill-timed treatment of results in the damage of fabrics of penis of long duration loss of potency can come as a result of it. Tadalafil 20 mg is distributed in pill form and prescribed to men, suffering from erectile dysfunction (impotence). The medication is a PDE5 inhibitor and works by causing the smooth muscles of corpus cavernosum and the penile arteries to relax, which in turn leads to easier to obtain erection. Tadalafil 20mg has longer half-life than the other two currently approved oral ED medications and it is sold under the brand name Cialis. Tadalafil 20mg has been sold online for many years and many men prefer purchasing their ED medications off the Internet due to the lower prices and the discreet delivery. Even if you purchase the pills online, you should use them exactly as your doctor has directed. Tadalafil tablet comes in three different forms or dosages: tadalafil 20mg, 10mg, and 5mg. Most common and convenient side is tadalafil 20mg because it’s cost effective. If one needs a 10mg dosage, he can just split the pill in two with a pill splitter. 20mg pills usually cost less than twice the price of 10mg pills. Therefore you can buy cheap tadalafil and have a savings there. The most important measure one should take before sipping these generic drugs is that knows the proper use of the drug. The dosage is one of the most important things to keep in mind along with how many times and when to take the medicine. Many other researchers have showed the result that taking the medicine as early as 4 hours before the sexual activity is useless and detrimental to health.