5 Worthy Holistic Reasons to Use Propionyl L Carnitine Trying to get back into my healthy routine one step at a time , Ive been adding these L Carnitine drinks from @BotaniqueHeaven into my daily routine lately and honestly they taste so refreshing If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy. 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.