Like all drugs and medications available in pharmacies in the United States, Levitra was first tested in clinical trials, the results of which were reported to and approved by the U.S. Food and Drug Administration (FDA). That means the developer of the drug has successfully carried out the tests and clinical trails documenting vardenafil’s (Levitra’s generic name) benefits and side effects.
In particular, Levitra was tested in more than 50 clinical trials that involved more than 4,400 men who suffered from erectile dysfunction (ED). ED is defined as the “repeated inability” to achieve and maintain an erection long enough for successful sex. Other sources quantify that inability to be more than approximately 25 percent of the time.
Levitra’s makers reported that the trials showed the drug provided first-time success when given to ED patients and “reliable improvement of erectile function.” Overall, based on a broad patient population from the trials, as many as 85 percent of the men given Levitra achieved improved erections. Those tested also reported harder erections and better sexual experiences overall.
The drug also was effective in treating men suffering from other health problems, such as diabetes and prostate cancer, achieve better erections. The testing showed that Levitra was able to help men mild or moderate ED, or as the drug’s website proclaims: “It’s for the guy who needs a little help once in a while and the guy who needs more frequent help.”
The testing also delineated the side effects and possible drug interactions for Levitra. According to FDA regulations, any advertising of the drug that explains it use and benefits also must include information about its drawbacks or downsides. The clinical tests provided statistics about these side effects in addition to the stats on its effectiveness.
Generally, the side effects reported most commonly were headache, flushing, and stuffy or runny nose, all of which were said to be mild or to go away quickly. The testing report also listed other medications that should not be taken with Levitra and other medical conditions that would making taking the drug dangerous. In most cases, the medical conditions and drug interactions are the same for the entire class of drugs, not specifically Levitra itself.