Best L-Citrulline

  • 750mg of L-Citrulline Per Capsule, 1500mg Recommended...
  • 180 Capsules Per Bottle
  • High Quality L-Citrulline, Non-GMO, Gluten Free
  • MADE AND TESTED IN THE USA - Our L-Citrulline capsules are...
  • BOOST L-ARGININE LEVELS – Research shows that L Citrulline...
  • BOOST NITRIC OXIDE LEVELS – L-Citrulline supports the...
  • MADE AND TESTED IN THE USA - Our L-Citrulline capsules are...
  • BOOST L-ARGININE LEVELS – Research shows that L Citrulline...
  • BOOST NITRIC OXIDE LEVELS – L-Citrulline supports the...
  • SUPPORTS PROTEIN METABOLISM*: This non-essential amino acid...
  • VEGAN CAPSULES/HEALTHY IMMUNE SYSTEM FUNCTION*: Citrulline...
  • CERTIFICATIONS/CLASSIFICATIONS: Dairy Free, Egg Free,...
  • PREWORKOUT: Helps boost energy and aid exercise recovery*
  • Supports circulation, contributes to cardiovascular health,...
  • Fortifies the immune system*
  • BOLD CITRULLINE: Get peak support for your fitness routine...
  • MAXIMUM STRENGTH: Delivers 2,400 mg of L-Citrulline (Free...
  • EXPERTLY CRAFTED: Our premium formula is backed by our...

Citrulline has the special feature that it is extremely well tolerated. As part of a dietary supplement, the active ingredient then enters the bloodstream directly via the intestine, thus reaching the liver. At this point citrulline can then be converted into arginine. Arginine is the precursor for nitrogen monoxide and this is vital. If the arginine level is too low, serious secondary diseases are also possible, such as erectile dysfunction, diabetes mellitus, arteriosclerosis and high blood pressure. The arginine content in the body can be kept constant with argiline retard and this is a combination of L-citrulline and arginine. This provides very effective protection against cardiovascular diseases. Citrulline is known as a residence time prolonger and the arginine level is kept at a stable level. This is justified by the time-delaying transformation of citrulline into arginine, which takes place inside the liver. Argiline Retard thus provides a protective formula for patients’ vascular health. Citrulline is also produced as an intermediate product of the urinary cycle. The latter is responsible for the degradation of the nitrogen compounds. Citrulline is also the by-product of nitrogen monoxide synthesis.

Our Top L-Citrulline Pick

Nutricost L-Citrulline 750mg, 180 Capsules - 1500mg Per Serv, Gluten Free
  • 750mg of L-Citrulline Per Capsule, 1500mg Recommended Serving Size
  • 180 Capsules Per Bottle
  • High Quality L-Citrulline, Non-GMO, Gluten Free
  • Made in a GMP Compliant, FDA Registered Facility
  • Non-GMO and Gluten Free

Drugstore articles: L-Citrulline Video Guide

L-Citrulline is an amino acid which is non-proteinogenic. It is synthesized from animals and plants and was named after the watermelon. Watermelon contains a very high amount of natural citrulline. Citrulline is formed from carbamoyl phosphate and ornithine. The phophate residue is then delayed by the ornithine-carbamoyl transferase. In total there are twenty proteinogenic amino acids and in addition there are 250 other amino acids which also have biological functions and these are the non-proteinogenic amino acids. Although these are not as important for the human body as these elementary amino acids, they still play an important role for well-being and vascular health. L-Citrullin can also be used to improve performance in sports. Nitric oxide synthesis optimizes blood flow within the blood vessels. The power plants of the cells also have an improved function here. In a study with more than 20 trained men, it was found that after only 8 days the men covered a distance of 4 kilometres in a significantly shorter time. The feelings of weakness in the muscles could be reduced and thus the positive effect of citrulline is also proven for the subsequent regeneration of the muscles and for the athletic performance. As a non-proteinogenic amino acid, L-citrulline plays no role in protein synthesis. Even humans cannot produce them and therefore the intake through food is important. The name comes from the amino acid of the watermelon called Citrullus vulgaris. Here there is a particularly high concentration within the shells. With L-arginine, L-citrulline is a natural precursor and citrulline can thus be made into arginine. There is an important health benefit because blood pressure can be lowered, after exercise there is less muscle soreness, oxidative stress in the blood is reduced, the organs are better supplied by other vessels and the immune system is also improved by NO synthesis.

TOP 5 L-Citrulline Bestseller

Nutricost L-Citrulline 750mg, 180 Capsules - 1500mg Per Serv, Gluten Free
  • 750mg of L-Citrulline Per Capsule, 1500mg Recommended Serving Size
  • 180 Capsules Per Bottle
  • High Quality L-Citrulline, Non-GMO, Gluten Free
  • Made in a GMP Compliant, FDA Registered Facility
  • Non-GMO and Gluten Free
L Citrulline Capsules 1,200mg Per Serving, 210 Count (L-Citrulline Increases Levels of L-Arginine and Nitric Oxide) Muscle Recovery Supplement – Improve Muscle Pump by Double Wood Supplements
  • MADE AND TESTED IN THE USA - Our L-Citrulline capsules are made in the USA and safety tested for heavy metal / microbes in a state of the art New York facility.
  • BOOST L-ARGININE LEVELS – Research shows that L Citrulline may be more effective at increasing levels of L-Arginine in the body when compared to direct L Arginine supplementation.
  • BOOST NITRIC OXIDE LEVELS – L-Citrulline supports the synthesis of Nitric Oxide which may help enhance blood flow, circulation, and the “pump” experienced when lifting weights.
  • REDUCE FATIGUE – Some research suggests L Citrulline may reduce fatigue and improve endurance for aerobic and anaerobic exercise.
NOW Supplements, L-Citrulline 750 mg, Supports Protein Metabolism*, Amino Acid, 180 Veg Capsules
  • SUPPORTS PROTEIN METABOLISM*: This non-essential amino acid is an important intermediate in the urea cycle, functioning along with other amino acids to rid the body of ammonia, a byproduct of protein metabolism.*
  • VEGAN CAPSULES/HEALTHY IMMUNE SYSTEM FUNCTION*: Citrulline also plays an important role in the healing process and in the maintenance of a healthy immune system.*
  • CERTIFICATIONS/CLASSIFICATIONS: Dairy Free, Egg Free, Kosher, Made without Gluten, Non-GMO, Nut Free, Soy Free, Vegan/Vegetarian
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968
L-Citrulline Powder by BulkSupplements (1 Kilogram)
  • Clean & Pure Powder. No Fillers.
  • Factory Sealed Foil Zip Pouch.
  • Lab Tested for Verification & Guaranteed Purity.
NOW Sports Nutrition, L-Citrulline, Extra Strength 1200 mg, Amino Acid, 120 Tablets
  • EXTRA STRENGTH: This extra strength NOW Sports product has more citrulline (1,200 mg per tablet) than our regular strength product (750 mg per capsule).
  • NITRIC OXIDE PROMOTER: Citrulline is a non-essential amino acid that is an important intermediate in the urea cycle, functioning along with other amino acids to rid the body of ammonia, a by-product of protein metabolism.
  • CLASSIFICATIONS/CERTIFICATIONS: Informed-Sport/Informed-Choice, Steroid Free, Non-GMO, Kosher, Vegan, Soy Free, Vegan/Vegetarian, Nut Free, Made without Gluten, Dairy Free, Egg Free, Keto Friendly
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968