Cialix Male Enhancement : However, there are also medical studies that indicate that the lengthening effects can be negligible. Other surgical treatments include the injection of dermal fillers, silicone gel, or PMMA. Dermal fillers are also not approved by the US Food and Drug Administration for use in the penis. There are several surgical penis enlargement treatments, most of which carry a risk of significant complications. Procedures by unlicensed surgeons can lead to serious complications.