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  1. Karen says:

    While looking for best erectile dysfunction drug, the most common names we come across are Viagra, Cialis, and Levitra. All three of them work in the same way to provide adequate erection strength required for satisfactory sexual intercourse. These medicines have shown great results in most cases and have some side effects as well. The difference between the three is that Cialis lasts longer otherwise there are only minor differences.
    Which is the best erectile dysfunction drug and how they work?
    Under sexual stimulation, body produces nitric oxide which is needed to widen the blood vessels inside penis. Viagra, Levitra, and Cialis increase the production of nitric oxide thereby aiding the process of achieving and maintaining the maximum erection. There is only a slight dissimilarity in the chemical constitution of the three medicines and this affects their results with each individual. Doctor’s consider their side effects and reaction with other medicines before prescribing them for a particular patient. These medicines should be taken 30 to 60 minutes before sexual intercourse on empty stomach and not more than once a day. Effect of Viagra and Levitra lasts up to 4 hours while Cialis is effective till 36 hours from intake.
    http://www.super-cialis.com which has it’s Headquarters in Montreal, Canada
    http://www.mysuperpharma.com which is located in Manchester, UK.
    http://www.cialis-uk.com which is located in London, UK.

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