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l carnitine and astaxanthin swisse pre workout dose L-Carnitine – Paket Glutathione Quantity:50 Pack Scenedesmus Rubescens Extract – Unflavoured ensuring well L-carnitine: The Endurance Sports Flavor:Berry 31serv (Best Before Jan 1, 2024) – Flavor:Lemonade Gluta White L Glutathione Capsules Emerald Labs Setria L-Glutathione

Emerald Labs Setria L-Glutathione for Healthy Liver/Cell Support, Immune System Support, Antioxidant-Rich, Skin Health and Anti-Aging Support - 30 Vegetable Capsules

Adding a fatty acid chain changes the molecule, and research on one is not research on another

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That's not a reason to default to the simpler formulation when the research question calls for KPV's specific mechanism, but it's a legitimate factor when the added component isn't actually relevant to what's being studied