Cialis is a prescription medication used to treat Erectile Dysfunction (ED) in men. ED is when a man is unable to achieve or maintain an erection until orgasm is reached. Cialis is one of the brand names for drugs with the main ingredient being Tadalafil. This article will give detailed information about the benefits, precautions, side effects, and warnings.

Before a decision is made to buy Cialis, it is important to understand how it works in the body. Cialis blocks the chemical PDE5, which inhibits erections. By blocking PDE5, other chemicals are allowed to work to create and maintain an erection. PDE5 is created prematurely in men with ED before they are able to achieve an erection. Cialis blocks this chemical, therefore allowing men with ED to maintain an erection. It also relaxes the blood vessels, which increases blood flow to the penis. It also works in the same way to relax the heart muscle in the case of a rare condition called pulmonary hypertension. It does not target any other muscles, which increases the safety of this medicine.

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This medicine will not work unless a man is sexually excited or sexual activity is initiated. Sexual activity is necessary for this medicine to work since blood must start to flow to the penis in order to achieve erection. This medicine blocks the chemical that makes a man lose an erection. Cialis takes 30-60 minutes to start to work in most men

There are several indications where a man should not buy Cialis or should at least discuss it thoroughly with a doctor or other medical professional. The most common side effects of Cialis include headache, nasal congestion, red/flushed face, upset stomach, and blurred vision. In some cases, men have reported a blue tinge to their vision or loss of peripheral vision. Rarely, an erection may last for more than 4 hours or become painful. In this case, medical attention may become necessary. Medical professionals should also be consulted in the if there is any loss of vision, chest pain, or arm pain.

To reduce side effects or to make them more tolerable, taking a half dose is often found to be useful. A half dose can many times reduce bothersome side effects without reducing the effectiveness of this medicine.

Drug interactions are possible if this medicine is taken in conjunction with nitrite or nitrates (for heart problems), certain drugs used for yeast infections (fluconazole, itraconazole, ketoconazole, and voriconazole), medicine for high blood pressure, cimetidine (used for peptic ulcers and heartburn), rifampin (antibiotic), erythromycin (antibiotic), and other sildenafil citrate medicines.