Viagra is the first medication launched way back in the year 1998 to fight against the abnormality of erectile dysfunction in males. The drug commands wide acceptability and has the biggest consumer base all across the globe. Cialis on the other hand is a more recent entrant into the erectile dysfunction control market. It is considered to be one of the strongest competitor of Viagra in the market and already has a very popular and growing customer base.

Cialis is one of the biggest aspirants of the number one throne in the erectile dysfunction control market which is currently with Viagra. The customer base of Cialis has increased manifolds in a short span of time, considered to the market share that Viagra commands despite being for so long in the market. The total revenues of the erectile dysfunction market have been $6 bn, Viagra, Cialis and Levitra combined, and out of which $1.5 bn have been generated by Viagra alone.  

The basic performance functions of both Cialis and Viagra are same, although the integral composition ingredients are different in both of them . Both of them function on the principal of increasing the supply of blood into the penis tissues resulting in erection. Apart from this, easy availability of the drug is a major difference between the two; where Cialis is available in countries like the United Kingdom, Finland, Australia, Sweden, etc. and very soon in the US too.

Cialis is not believed to have any major side effects and no specific diet is required while consuming Cialis. The only thing that one should keep in mind is to refrain from consumption of excess alcohol before taking these medications. This could have an effect of lowering the blood pressure levels of the user to alarming levels.      

Another advantage that Cialis enjoys over Viagra is that it works faster and for a much longer duration inside the body, enabling the user to have effective erections for longer durations. The ingredients of Cialis are retained in the body for a longer duration and their effect can be felt for almost 36 hours after intake, whereas in cases of Viagra, it effect can be experienced for 3 -4 hours.

All in all Cialis is a much better product when compared to Viagra, its inbuilt ingredients are different from Viagra and its effect lasts for a much longer duration of time when compared to Viagra.