Xenical on line sildenafil is the main component of Kamagra Oral Jelly. Sildenafil affects the response to sexual stimulation. It acts by enhancing smooth muscle relaxation using nitric oxide, a chemical that is normally released in response to sexual stimulation. This smooth muscle relaxation allows increased blood flow into certain areas of the penis, which leads to an erection. Sildenafil is applied for the treatment of erectile dysfunction (impotence) in men and pulmonary arterial hypertension. Sildenafil may also be used for other purposes not listed above. Consult with your doctor before using. Use no more than was prescribed. Take it orally, generally three times daily during (or up to one hour after) each main meal that contains fat. You should take a multivitamin addition including vitamins A, D, E, and K to ensure good supply. The addition should be taken at least two hours before or after you take this medication, such as before going to bed. The recommended dose for adults and children under 12 years is one 120-milligram capsule 3 times daily. Note: this instruction presented here just for review. It’s very necessary to consult with your doctor before using. It helps you to get the best results. It is preferable not to use Cialis with grapefruit juice, alcoholic beverages, tobacco. If you smoke tobacco and take Cialis concomitantly this may lead to a condition called NAION (sudden optic nerve-related vision loss). Inform your doctor before to take. Cialis if you have abnormal penis, including curved penis and birth defects of the penis, had coronary artery disease, arrhythmia, angina, heart attack or heart failure, hypo- or hypertension, bleeding, stomach ulcers, diabetes, hyperlipidemia (excess of lipids in the blood), sickle-cell anaemia, liver or kidney failure in history.