L-Citrulline DL-Malate 2:1 Powder

1. Enhanced Nitric Oxide (NO) Production, Arginine Bioavailability & Malate Synergy

L‑Citrulline DL‑Malate (2:1) is a compound that combines L‑citrulline with DL‑malic acid. Its ergogenic effects stem from two synergistic mechanisms:

First, the L‑citrulline component serves as a superior precursor for L‑arginine synthesis. Unlike L‑arginine, which undergoes extensive first‑pass metabolism in the liver (resulting in poor oral bioavailability), L‑citrulline bypasses hepatic degradation and is efficiently converted to arginine in the kidneys via the urea cycle. Studies show that L‑citrulline supplementation increases plasma arginine levels 2–3 times more than direct L‑arginine intake. This leads to sustained nitric oxide (NO) production, enhanced vasodilation, and increased blood flow to active muscles.

Second, the DL‑malate component is an intermediate in the Krebs (TCA) cycle, contributing to increased ATP generation during exercise. By boosting both NO‑mediated blood flow and ATP production, L‑citrulline DL‑malate improves aerobic and anaerobic exercise performance, reduces fatigue, and accelerates recovery.

2. Enhanced ATP Production (Malate Synergy)

Malate is an intermediate of the Krebs (TCA) cycle and contributes to increased ATP production, which is crucial for muscular work. The malate component plays an independent ergogenic role in energy metabolism. By enhancing ATP generation, increasing vasodilation and blood flow to active musculature, and boosting work capacity, L‑citrulline DL‑malate improves both aerobic and anaerobic exercise performance.

3. Increased Muscular Endurance & Upper‑Body Performance

L‑Citrulline DL‑Malate (2:1) supplementation has been shown to significantly increase upper‑body muscular endurance. Clinical research demonstrates that compared to a placebo, citrulline malate enables athletes to complete approximately 5–6 more repetitions during upper‑body resistance exercises (e.g., bench press and incline chest press). This improvement is attributed to the compound's ability to delay fatigue by enhancing the clearance of ammonia and lactate from active muscles.

Chronic use of L‑citrulline DL‑malate enhances upper‑body muscular endurance and supports post‑exercise recovery, making it a valuable ingredient for resistance‑training athletes seeking to optimize performance and training volume.

4. Reduced Perceived Exertion (RPE) & Fatigue

Studies consistently show that L‑citrulline malate supplementation reduces perceived exertion during and after exercise, allowing athletes to maintain intensity for longer periods. By improving oxygen utilization, enhancing ammonia clearance, and reducing lactate accumulation, L‑citrulline malate helps accelerate recovery post‑exercise. Research indicates L‑citrulline supplementation may also help reduce muscle soreness and fatigue, making it a promising option for resistance‑trained athletes seeking to optimize training performance.

5. HIIT & Combat Sports Performance

A narrative review on citrulline malate mechanisms concluded that the compound serves as an NO enhancer, leading to improved performance of high‑intensity strength and power tasks through increased vasodilation of blood vessels in active musculature. L‑Citrulline malate is commonly used by athletes in combat sports (mixed martial arts, boxing, wrestling) and high‑intensity interval training (HIIT) settings to support endurance, power output, and recovery between bouts.

6. Superior Alternative to Direct Arginine Supplementation

Compared to direct L‑arginine supplementation, L‑citrulline malate offers superior pharmacokinetics:

(1) bypasses first‑pass liver metabolism,

(2) produces 2–3 times greater increases in plasma arginine concentrations,

(3) results in sustained NO production over a longer duration,

(4) avoids the gastrointestinal side effects sometimes associated with high‑dose arginine, and

(5) includes malate for independent energy production benefits.

1. Sports Nutrition & Dietary Supplements

L‑Citrulline DL‑malate (2:1) is a well‑researched, mainstream ergogenic ingredient in the global sports nutrition industry. It is widely formulated into various fitness supplements to boost exercise performance and accelerate post-workout recovery. Its core application scenarios are as follows:

• Pre‑workout powder formulations - The most common application form. The single serving dosage ranges from 3–12 g. It is commonly compounded with creatine, beta‑alanine, betaine, and nitrates to achieve synergistic energy and performance enhancement effects.
• Intra‑workout and endurance support blends - Compatible with electrolytes, carbohydrates, and BCAAs, it helps maintain a continuous energy supply and delay physical fatigue during long-duration endurance exercise.
• Post‑workout recovery supplements - Effectively promote muscle recovery and relieve exercise-induced muscle soreness by accelerating ammonia and lactic acid clearance, and improving muscle oxygen utilization efficiency.
• Capsule and tablet formulations - Designed for consumers who prefer solid dosage forms. The conventional specification is 500–1,500 mg per capsule, with a daily intake of 1–3 capsules for daily maintenance.
• All‑in‑one comprehensive pre‑workout formulas - Most professional compound pre-workout products adopt a standard dosage of 6,000 mg per serving of L‑Citrulline DL‑Malate (2:1).
• Single-ingredient standalone powder - Pure L‑Citrulline DL‑Malate powder is available for flexible personalized dosing according to different exercise intensities and physical conditions.
• Typical Dosage Protocol: An acute single dose of 6–8 g L‑Citrulline DL‑Malate (2:1) is recommended before exercise. For periodic supplementation, 8–12 g per day is applicable, divided into two 4–6 g doses (taken 30–60 minutes before exercise and after exercise, respectively). For daily maintenance, 3 g taken twice daily with water is the standard regimen.

2. Functional Foods & Beverages

L‑Citrulline DL‑Malate is widely added to functional food and beverage products for sports and daily health care:

Sports drinks and ready-to-drink (RTD) performance beverages, energy drinks, and electrolyte water for endurance athletes; mixed into whey and plant-based protein powders as well as meal replacement powders to optimize post-exercise recovery effects; also applied to portable functional snacks, chewable tablets, and other on-the-go nutritional supplements.

3. Cardiovascular Health Research

As a key precursor of nitric oxide, L‑Citrulline DL‑Malate has been extensively studied to support normal vascular endothelial function and maintain healthy blood pressure levels by promoting nitric oxide-mediated vasodilation and improving blood circulation.

Disclaimer: This ingredient is used for sports nutrition and daily dietary supplementation, and serves as a research tool for in vitro, animal, and human trials. It is not intended to diagnose, treat, cure, or prevent any disease.

4. Pharmaceutical Industry

It is a high-purity bulk raw material for formal dietary supplement manufacturing, widely supplied to CMO factories and health product brands for formula production. With excellent water solubility and stable properties, it can be used as a functional raw material for various tablet and capsule formulations. In addition, it is commonly adopted in academic research and clinical trials related to exercise physiology, nitric oxide metabolism, and ergogenic nutrition.

5. Agriculture and Animal Feed

L‑Citrulline DL‑Malate is occasionally added to livestock and aquaculture feed formulations to regulate animal metabolic levels, relieve stress response, and improve the healthy growth state of breeding animals.

6. Biochemical Research & Biotechnology

It is a professional biochemical raw material and reference standard, widely used in HPLC and LC‑MS detection and quantitative analysis of amino acid compounds. It can be used as a specific substrate for urea cycle enzymes, such as argininosuccinate synthetase, for enzyme kinetics research. Meanwhile, it is applied in cell culture media preparation and serves as a core tool compound for exploring urea cycle metabolism and arginine‑citrulline metabolic pathways in life science research.