Sunday, October 2, 2011

Cialis Vs Viagra


The information pertaining to mode of action and side-effects of Cialis and Viagra is presented below. The Cialis vs Viagra reviews presented below should help us understand the difference between these two drugs.

Viagra
The chemical sold under names like Viagra and Revatio, is actually Sildenafil citrate. Viagra was introduced in 1998 by Pfizer, a pharmaceutical company. Common usage of Viagra is found in the treatment of erectile dysfunction. However, the drug is also used for the problem of Pulmonary Arterial Hypertension (PAH). Action of Viagra in the treatment of erectile dysfunction can be explained as follows: degradation of cyclic Guanosine Monophosphate (cGMP) which takes place by the action of phosphodiesterase type 5 (PDE5) is prevented. Level of cGMP increases as a result of the binding of guanylate cyclase receptors and nitric oxide present in corpus cavernosum. This increase in cGMP levels cause the relaxation of helicine artery intimal cushions. Flow of blood towards spongy tissues of penis therefore, increases and it causes erection.

Cialis
The Cialis drug is chemically known as tadafil. It was introduced by the names, Cialis and Adcirca for the treatment of erectile dysfunction and pulmonary arterial hypertension respectively. This FDA approved drug became available for sale on 21st November, 2003; it was introduced in the market by the ICOS Corporation, USA. Cialis' mechanism of action is similar to that of Viagra. The difference however, is in the duration for which the effect lasts. Effect of Cialis lasts for a period of 17 hours, while that of Viagra stays 4-5 hours. Information on the dosage of Cialis should be helpful for readers.

Cialis Vs Viagra Side Effects
The side effects observed with the usage of Viagra and Cialis are presented in separate paragraphs below.

Viagra Side-effects
Side-effects observed from the use of Viagra are as follows: headache, dyspepsia, flushing, impaired vision and nasal congestion. The problems associated with vision resulting from the intake of Viagra are photophobia and blurred vision. However these are only few of the side effects caused by Viagra.

Side-effects Resulting from Cialis
The side-effects that result from usage of Cialis are flushing, muscle aches, back pain, indigestion, headache, and runny nose. Effects like muscle aches and back pain occur within a period of 12-24 hours from the intake of Cialis; these problems stay for as long as 48 hours. Here are few of the side effects of Cialis, the information about which, should prove be useful for the readers.

Overview of Cialis Vs Viagra Comparison
Cialis holds an edge over Viagra as the former delivers quick results. It takes about sixteen minutes for the chemical action of Cialis to begin. Viagra on the other hand, requires approximately one hour for initiation of chemical action. Cialis stays in the body for a longer period, which makes it more effective than Viagra. The Cialis vs Viagra price comparison can be studied in a proper manner with the following information: Cialis is available in tablets of 10 mg and 20 mg. A single pack of 10 tablets each weighing 10 mg is priced at $39.95. Price of a pack containing 20 mg tablets (10 in number) is $44.95. The 50 mg and 100 mg tablets of Viagra are priced at $1.99 and $3.00 respectively. Therefore, a pack that contains ten 50 mg tablets is priced at $19.95; a pack of 100 mg tablets (10 in number) costs $29.95.

Facts pertaining to mode of action and side effects of both Cialis and Viagra are presented in the article above. The Cialis vs Viagra comparison presented in this article helps understand which is a better option. It is important to know that both, Cialis and Viagra have a similar kind of mechanism however, slight differences make one of the drugs better over other.

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