Appeared competitors with Viagra

The US Food and Drug Administration (FDA) has approved a new fast-acting drug called Stendra used to treat erectile dysfunction, the US Today report said.

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New licensed drugs will become competitors of Viagra.

The active ingredient of Stendr a is avanafil . This new substance inhibits type 5 enzyme enzyme phosphodiesterase and belongs to the same family of Viagra, Levitra and Cialis active ingredients - three drugs with the same effect are widely circulated on the market.

Due to the effect of the drug, when sexually stimulated, the blood vessels in the penis will expand, causing blood to flow into it and thus, the male genitalia will erect.

According to the instructions, it is necessary to take the medicine 30 minutes before the start of the "visit" and 15 minutes later, the medicine will work. Clinical experiments prove that the efficacy of the drug is as good as the above 'seniors', lasting from 20 to 60 minutes.

Clinical trials also showed that only 2% of patients had side effects such as headache, flushed face and stuffy nose. Sometimes vision and hearing are temporarily weakened for a moment.

The FDA representative said: 'The introduction of a new drug for erectile dysfunction allows patients to choose a drug that they feel is most appropriate for them.'