acetyl l carnitine increases choline Acetyl-L-carnitine physical-chemical, metabolic, and therapeutic properties: relevance for its mode of action in Alzheimer's disease and geriatric depression L-carnitine and Acetyl-L Carnitine: A

Any procedure involving anesthesia and surgery does carry some risk, but your cats vital signs will be carefully monitored throughout the entire neutering procedure

Hao et al., 2024)

More importantly non-metabolised synthetic Folic acid blocks DHFR that is needed for its reduction but also prevents MTHFR activity (one of the most important enzymes for the SAMe production.) Adding 5-MTHF instead of synthetic folic acid can overcome all the above-related blockages, with studies demonstrating that the folate status undeniably improved after such intervention

That dependence imposes a strict ceiling on vitamin C bioavailability