l-carnitine cats hyperthyroidism BestLife4Pets Thyroid Cat Support for Weight Management and Hormone Balance, Unflavored Capsules LiquiCarn for Dogs and Cats

Deficiency in short-chain fatty acids (SCFAs) may impair hypothalamic regulation of appetite via GPR41/GPR43 signaling pathways, thereby contributing to dysregulated energy homeostasis (Ley et al., 2006)

For deeper ammonia removal, I recommend targeted amino acids that help with detoxification, such as NOW Foods Ornithine (500-2000 mg) at bedtime

It Might Be a Vitamin B12 Deficiency Overview of vitamin b12 deficiency anaemia : Vitamin B12 or B9 (commonly called folate) deficiency anaemia occurs when a lack of vitamin B12 or folate causes the body to produce abnormally large red blood cells that cannot function properly

Crucially, BPC 157 might act as the particular peptidergic agent that implements the cytoprotective capabilities, and pleiotropic beneficial effects [1,3,4,5,6,9,32,33,34,92] (as noted above, largely involving the muscle healing and function recovery of striated, smooth and heart muscle) [1,3,4,5,6,9,32,33,34,92]

That means ruling out celiac disease, anemia, bleeding, and true IBD