Although one rodent study noted fairly remarkable increases in testosterone over the course of five days with the use of Fadogia agrestis,[1] more and lengthier studies are required to investigate this effect, as there is also a possible cytotoxic effect that can manifest after around a month, which could interfere with the testosterone-boosting properties of the plant.[2] It’s worth noting that the potential cytotoxic effects of Fadogia agrestis may not be limited to the testicles, with more studies required to determine what exactly is occurring.