Similar to tirzepatide, retatrutides activation of GLP-1 and GIP receptors promotes insulin secretion, decelerates digestion, and reduces appetite, contributing to notable weight loss [6, 7, 8]
Studies in overweight cats have evaluated supplemental oral L-carnitine during rapid weight loss, focused on metabolic management rather than quick cosmetic change (Center SA, 2000) which matters because cats respond poorly to aggressive calorie restriction even when the intent is "healthy weight." A practical approach: pick a product with conservative, clearly stated amounts, then align use with your veterinarian's plan, especially if your cat is on a prescription diet or has reacted to supplements before
Darwish, A
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Select FDA-approved GLP-1s start at $149/month with a manufacturer savings card
But the Eli Lilly vials don't contain a preservative and are labeled for single-use, which the patients say complicates their cost-saving strategy