l-carnitine recommended dose L-carnitine: Health Benefits, Side Effects, Uses, & Precautions Doctor's Best Acetyl-L-Carnitine, 1000 mg

Yes, it is worth supplementing with L-carnitine, especially if you don't eat meat, which is a natural, well-absorbed source of it (the body absorbs about 54-76%)

NDC 60687-953-42: 10 mL unit dose cup NDC 60687-953-56: Case contains 100 unit dose cups of 10 mL (60687-953-42) packaged in 10 trays of 10 unit dose cups each

Eaton S, Fukumoto K, Stefanutti G, Spitz L, Zammit VA, Pierro A: Myocardial carnitine palmitoyltransferase I as a target for oxidative modification in inflammation and sepsis

Clin Pediatr (Phila) (2020) 59:8168

I also faithfully followed the recommendation to have one to two ounces of 80 percent cacao per day, even carrying a large bar in my purse