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Levitra (vardenafil) was approved for usage in the U.S. on the 19th of August, 2003. Before its introduction to the market the only ED (Erectile Dysfunction) treatment option was Viagra (sildenafil). Levitra can work in as little as 12 minutes and stay in a person’s system for up to 24 hours. Bayer and GaxoSmithKline, the manufacturers, Bayer and GlaxoSmithKline, believe this will lead to more spontaneous and thus more enjoyable sexual encounters for people requiring erectile dysfunction treatment.
Levitra works as a PDE5 inhibitor, rapidly entering the bloodstream and relaxing the main arteries which feed blood to the penis. The PDE5 enzyme in the penis is what controls how much blood is pumped into the main shaft. When this enzyme is disabled, the blood can flow freely, and upon sexual arousal or stimulation, an erection is easily achieved and maintained for a prolonged period of time.
Levitra comes in 2.5-mg, 5-mg, 10-mg, and 20-mg tablets. Usually the starting dose for Levitra is 10-mg. Your physician will dispense the right dosage for you based upon your medical history and situation, as each patient’s needs are unique. Always make sure to tell your doctor all of the medications that you are currently taking, whether they are prescription or over-the-counter.
While all three of these leading ED drugs are PDE5 inhibitors, there are some minor differences between them. Viagra was the first ED drug and is considered to be the strongest; however it only lasts about 4-5 hours in the system. Cialis is the newest of the ED drugs and touts a hefty 24-36 hour presence in the system, while Levitra falls in between Cialis and Viagra–kicking in fast and lasting roughly 4-8 hours or more. Also, Levitra has been shown to work for many ED patients when these other two ED drugs have not.
Mohammed Azim Dad was read his sentence today: 250 hours of community service for selling counterfeit versions of the popular three leading ED drugs, Levitra, Cialis and Viagra. Charged with violating the Trade Marks Act of 1994, he was found guilty by a court of law. He had admitted that he was regularly purchasing these ED drugs from counterfeiters in China, and then reselling them on the popular auction site, Ebay.com. Police officials seized over £45,000 from his residence in all.