Your focus should be on building a comprehensive treatment plan that includes not just the medication but also nutritional support, physical activity modifications, and monitoring for the more significant side effects that can accompany larger doses
Altunbasak, S., Baytok, V., Tasouji, M., Herguner, O., Burgut, R., and Kayrin, L
- Dictante de varias ponencias a nivel nacional e internacional sobre Medicina Oral
[ref] The highest sources of L-carnitine in the diet are meat and dairy products, with very little found in plant sources
Translating to humans, experts cautiously estimate a 26 hour half-life when given subcutaneously
"Effects of acetyl-L-carnitine in Alzheimer's disease patients unresponsive to acetylcholinesterase inhibitors." Curr Med Res Opin 2003;19:350-3