L Carnitine Benefits, Dosage, Uses & Side Effects L Carnitine During Bulking L Carnitine For Muscle Building L Carnitine While Bulking L carnitine's acts as a fat burning supplement. During bulking periods, it can help limit fat gains and make a cleaner bulk. If you're cutting, it can help transport the fat you have into The Right Way to Take L Carnitine to Boost Your Training Beyond the health concerns of over consuming, dirty bulking hasn't been shown to have the promised athletic benefits and shouldn't be promoted. It increases your fat and your risk of chronic disease without