When using Xialla with injection, should the injection be done before or after putting on Xialla?

Can Xialla be put on a flaccid penis or do I need an erection to start?

Xialla can be put on a flaccid or erect penis. As you begin to get stimulated and blood flows into the penis, Xialla helps the erection to build by preventing blood from flowing back out too quick...

Is Xialla tested in clinical trials?

Yes. In two separate clinical trials Xialla demonstrated significant benefit to erectile function and sexual enhancement for the majority of men.