Generally speaking, Viagra is also called sildenafil citrate, and its main function can last for about four hours. After four hours, generally speaking, the efficacy will drop significantly. Viagra is mainly used to treat male erectile dysfunction and belongs to PDE5 inhibitor. Of course, in the same drug, there are also drugs that last longer, such as Xin Wei Geda Rafi, which also belong to this kind of drugs.
This medicine may have some advantages over Viagra. First of all, it is not affected by diet. In addition, it takes a relatively fast time to take effect, usually about half an hour, and its duration is longer. Generally speaking, the drug effect can be exerted within 36 hours after taking Wei Xin Ge Da Lafei.
It is recommended to go to a regular professional hospital as soon as possible to avoid delaying the illness. I hope it helps you, and I wish you health! Hope to adopt.