L-Citrulline Supplement

L-Citrulline is an amino acid which supports plasma levels of L-Arginine and L-Ornithine when taken as a supplement. It also supports the ammonia recycling process and the metabolism of nitric oxide. Overall, this helps support areas where nitric oxide is relevant including athletic performance and cardiovascular health.

• SUPPORTS ARGININE AND NITRIC OXIDE LEVELS — MORE EFFECTIVE THAN L-ARGININE SUPPLEMENTATION: L-Citrulline is an amino acid that bypasses first-pass liver metabolism — a limitation that makes direct L-Arginine supplementation less effective at raising plasma arginine levels. L-Citrulline is converted to L-Arginine in the kidneys via the urea cycle, consistently producing higher and more sustained plasma arginine levels than supplemental L-Arginine at equivalent doses. Each serving of Double Wood's L-Citrulline delivers 1200mg of pure L-Citrulline.
• NITRIC OXIDE SUPPORT FOR CARDIOVASCULAR HEALTH AND ATHLETIC PERFORMANCE: L-Citrulline supports the synthesis of nitric oxide (NO) — a signaling molecule that relaxes blood vessel walls, supporting healthy circulation and blood pressure. In sports contexts, increased NO production is associated with improved blood flow to working muscles, enhanced aerobic endurance, and the vascular "pump" during resistance training. Research has also examined L-Citrulline supplementation for cardiovascular support in adults with elevated blood pressure, with some studies showing reductions in systolic and diastolic pressure at doses of 3–6g per day.
• AEROBIC ENDURANCE AND MUSCULAR FATIGUE REDUCTION: Research suggests L-Citrulline may support aerobic exercise performance and muscular endurance by promoting ammonia clearance during exercise — a key contributor to exercise-induced fatigue. Some studies show improvements in exercise time to exhaustion and reduced post-exercise muscle soreness at doses of 6–8g taken 60 minutes pre-workout. Double Wood's L-Citrulline is typically taken 30–60 minutes before training for sports performance applications.
• NEARLY FOUR MONTH SUPPLY: Extra large bottle includes a whopping 210 capsules, enough to last nearly 4 months
• WE BOTTLE WELLNESS: At Double Wood we provide pure, potent supplements that deliver exceptional value, all backed by careful sourcing and rigorous third-party testing.

As a supplement for circulatory health support, take two 600 mg capsules in the morning with food. Repeat this dosage again with lunch and dinner. To support endurance when exercising, take 6-8 capsules about an hour before exercising.