The Benefits of Adding L Carnitine to Your Black Coffee Bella All Natural Caffeine Army Chocolate + Vanilla + Choconilla, 13.4 Greece Ubuy Black coffee is a simple and powerful addition to your weight loss routine. It helps boost metabolism, supports fat burning, and contains zero calories when consumed without sugar or cream. Add it When to take L carnitine: Dosage, forms, and side effects Black coffee (no sweetener)can support weight loss by naturally increasing your metabolism and promoting fat burning due to its caffeine content. It also acts as a low calorie beverage and potential appetite suppressant,