Bluebonnet Acetyl L Carnitine 500 mg 60 Veg Capsules Typical Natural Carnitine Content in Selected Feedstuffs Download Table L Carnitine and Creatine are both game changers for fitness, but they each shine in different ways! SAVE this as your quick guide! L Carnitine, found in red meat, fish, and chicken, supports fat Did You Know? Some people report a fishy smell after supplementing with L carnitine. This happens because certain gut bacteria convert carnitine to trimethylamine, a malodorous compound found in rotting fish.