Ingredient Guides
Reference reads on the ingredients that show up in pet supplements — probiotics, fibers, amino acids, carotenoids, fatty acids. Mechanisms, evidence, and honest limits.
Inulin ferments fast. That's both its strength and its weakness — and understanding the difference between inulin types explains why some products use it and others avoid it.
Unlike most mammals, cats cannot synthesize taurine. Deficiency leads to dilated cardiomyopathy and retinal degeneration. Here's what that means for daily nutrition.
Lutein is a carotenoid found in the retina that filters harmful blue light and supports macular density. Learn what it does in pets and why it appears in eye-support supplements.
L-Lysine appears in more cat supplements than almost any other amino acid. The science behind it is genuinely interesting — and more complicated than most product pages let on.
Lactoferrin shows up in tear stain formulas for two distinct reasons. Most product pages only explain one of them.
Psyllium isn't just a human fiber supplement. In cats, it plays a specific mechanical and microbiome-supporting role that makes it a genuinely useful ingredient.
