L-citrulline is an amino acid found naturally in watermelon, and the body also makes it. It is a popular ingredient in sports nutrition and general wellness, available as pure L-citrulline powder, citrulline malate, capsules and tablets, as well as in pre-workout and amino acid blends from trusted brands.

Compare the amount of L-citrulline per serve and whether the product contains pure L-citrulline or citrulline malate, as the ratio of the two affects how much citrulline you actually get. Check the other ingredients, including any caffeine or sweeteners in blends. L-citrulline may interact with blood pressure medication, nitrates and erectile dysfunction medicines, so check with your doctor or pharmacist if you take medication, have a medical condition, or are pregnant or breastfeeding. Our team in store are happy to help you choose.