best acetyl l carnitine 2018 Naturals L-Carnitine (ALCAR) 500mg, 120 Capsules, 120 Servings noting an increase in energy and overall well Acetyl L-Carnitine - aSquared Brands

10.1038/nm873

In individuals with IBD, proinflammatory cytokines downregulate OCTN2 through the PPAR/RXR pathway, resulting in reduced carnitine uptake by intestinal epithelial cells that leads to the dysfunction of intestinal regeneration and repair and further deterioration of IBD [232]

Stacking both could over-stimulate you, particularly if you're prone to jitters if you drink coffee or tea

ALCAR has a better absorption rate

Emerging role of mitochondrial DNA as a major driver of inflammation and disease progression

However, it is important to note that the suitability of L-Carnitine injections for an individual should be determined by a healthcare professional based on their specific needs and medical history