glutathione wiki synthetase File:Glutathione structure.png - Wikimedia Commons

However, for precise localized tissue models, researchers prefer the pure lyophilized powder format used for target injections, as it avoids any degradation within the digestive tract

Oral supplements are available, but most veterinarians prefer the injections, the thought being that they are more reliable since were dealing with cats who have demonstrated a compromised ability to absorb cobalamin through their GI tracts

Persistent symptoms should trigger a review of dose, hydration, sleep, and product quality

This product is Food Chemical Codex (FCC) certified and verified for quality and purity, making it a trusted oxidizer for dilution-based cleaning, sanitation, and processing applications

So I would just say spend more time on that conversation