L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you 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. Amazon.com: Vital Nutrients Acetyl L Carnitine Powder Brain, Memory, and Cognitive Support Supplement Vegan Gluten, Dairy, Soy Free Non GMO 100 Grams : Health & Household Customer reviews for Nutricost L Carnitine Tartrate Supplement Powder (100 Grams) 1 Gram per Serving; 100 Servings Walmart.com What you eat can influence how you smell and even how attractive you seem to others. Foods like garlic, onions, and cruciferous vegetables (broccoli, cabbage) contain sulfur compounds that affect body Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis