L-Citrulline has been shown to improve energy, high intensity exercise performance, endurance and recovery. This amino acid relaxes blood vessels, improves blood flow and consequently reduces blood pressure and toxin build up in the body.
Research has demonstrated L-Citrulline’s effectiveness in reducing fatigue and increasing high intensity sport performance. This unique amino acid is derived naturally from watermelon and raises nitric oxide levels, increases blood flow, oxygen delivery to the muscle and enhances your body’s ability to remove waste toxins such as lactic acid. L-Citrulline may therefore help combat physical and mental fatigue, ideal for both increasing daily energy and providing that edge in both training and competition.
1 week supply, 250g Powder, 500g Powder, 1kg Powder
We recommend taking between 5-6g of L-Citrulline daily with or without food. On training days, take 3g (approximately a teaspoon) 60 minutes before, and 3g within 60 minutes after your workout. On rest days, take 3g in the morning and 3g late afternoon. Please note that it may take 2-4 weeks for the full benefits of L-Citrulline to become apparent, however, increased blood flow – due to raised nitric oxide – should be noticeable within hours.
100% pure and natural L-Citrulline powder.
Food supplements should not be used as a substitute for a varied diet and healthy lifestyle. If you are pregnant, breastfeeding, taking any medications or under medical supervision, please consult a doctor before use. Discontinue use and consult a doctor if adverse reactions occur. Not intended for use by persons under the age of 18. Keep out of reach of children. Store in a cool, dry place. Do not exceed the stated dose.
Here are some studies that support the content on this page. We’ve tried to present a good mix of relevant research and have included page links if you want to do some further reading. This is by no means an exhaustive list of the studies carried out on the effects of L-Citrulline, but we hope that you find it useful.
Bailey, S.J., Blackwell, J.R., Lord, T., Vanhatalo, A., Winyard, P.G. & Jones, A.M. (2015) l-Citrulline supplementation improves O2 uptake kinetics and high-intensity exercise performance in humans. Journal of Applied Physiology, 119(4), 385-395.
Cormio, L., De Siati, M., Lorusso, F., Selvaggio, O., Mirabella, L., Sanguedolce, F. & Carrieri, G. (2011) Oral L-citrulline supplementation improves erection hardness in men with mild erectile dysfunction. Urology, 77(1), 119-122.
Curis, E., Crenn, P. & Cynober, L. (2007) Citrulline and the gut. Current Opinion in Clinical Nutrition and Metabolic Care, 10(5), 620-626.
Hickner, R.C., Tanner, C.J., Evans, C.A., Clark, P.D., Haddock, A., Fortune, C., Geddis, H., Waugh, W. & McCammon, M. (2006) L-citrulline reduces time to exhaustion and insulin response to a graded exercise test. Medicine and Science in Sports and Exercise, 38(4), 660-666.
Ochiai, M., Hayashi, T., Morita, M., Ina, K., Maeda, M., Watanabe, F. & Morishita, K. (2012) Short-term effects of L-citrulline supplementation on arterial stiffness in middle-aged men. International Journal of Cardiology, 155(2), 257-261.
Pérez-Guisado, J. & Jakeman, P.M. (2010) Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. Journal of Strength and Conditioning Research, 2010, 24(5), 1215-1222.
Romero, M.J., Platt, D.H., Caldwell, R.B. & Caldwell, R.W. (2006) Therapeutic use of citrulline in cardiovascular disease. Cardiovascular Drug Reviews, 24(3-4), 275-290.
Sureda, A., Cordova, A., Ferrer, M.D., Tauler, P., Perez, G., Tur, J.A. & Pons, A. (2009) Effects of L-citrulline oral supplementation on polymorphonuclear neutrophils oxidative burst and nitric oxide production after exercise. Free Radical Research, 43(9), 828-835.
Suzuki, T., Morita, M. & Kobayashi, Y. & Kamimura, A. (2015) Oral L-citrulline supplementation enhances cycling time trial performance in healthy well-trained males. Journal of the International Society of Sports Nutrition, 12(1), 52.
Suzuki, T., Morita, M., Kobayashi, Y. & Kamimura, A. (2016) Oral L-citrulline supplementation enhances cycling time trial performance in healthy trained men: Double-blind randomized placebo-controlled 2-way crossover study. Journal of the International Society of Sports Nutrition, 13, 6.
van Wijck, K., Wijnands, K.A., Meesters, D.M., Boonen, B., van Loon, L.J., Buurman, W.A., Dejong,C.H., Lenaerts, K. & Poeze, M. (2014) L-citrulline improves splanchnic perfusion and reduces gut injury during exercise. Medicine and Science in Sports and Exercise, 46(11), 2039-2046.