l-carnitine causes cancer Carnitine, Choline, Cancer, & Cholesterol:

Associations of dietary selenium intake with the risk of chronic diseases and mortality in US adults

Neuroinflammation 18 (1), 239

Ashwagandha extract (KSM-66) and Grape seed extract: Boosts sperm count and male fertility

Carnitine and human assisted reproduction Due to their beneficial effects on female fertility, carnitines have been used in numerous in vitro studies focused on improving the health and maturation of oocytes, embryonic development in assisted reproduction, in fact they allow to reduce the delay in embryonic development due to ROS, the fragmentation of the DNA and the development of an abnormal blastocyst due to prolonged culture [93, 94]

Additionally, serum levels of iNOS and interleukin 6 (IL-6) were significantly reduced in the group receiving the supplement (108)