BioTechUSA Citrulline Malate Powder

How Citrulline Malate by BiotechUSA supports your objectives

💉 Nitric oxide precursor — extreme muscle pump and vasodilation L-citrulline is converted to L-arginine in the kidneys, where it serves as the direct substrate for nitric oxide synthase (NOS) — the enzyme that produces nitric oxide (NO). Elevated NO levels relax and dilate blood vessel walls, increasing blood flow, oxygen delivery and nutrient supply to working muscles. This mechanism produces the characteristic muscle pump experienced during training and supports both mechanical performance and recovery through improved tissue perfusion.

⚡ Malic acid for Krebs cycle support and ammonia clearance Malic acid (malate) is an intermediate of the Krebs cycle — the central metabolic pathway for aerobic ATP generation. By directly supplementing this cycle intermediate, malate supports sustained mitochondrial energy production during prolonged exercise. Critically, malate also facilitates the conversion of ammonia to urea, reducing the accumulation of this fatiguing metabolite in exercising muscle. This ammonia-clearing function is one of the key mechanisms by which citrulline malate delays the onset of muscular fatigue.

🏃 Delayed fatigue and extended endurance capacity The dual action of citrulline (vasodilation, reduced ammonia) and malate (Krebs cycle support, ammonia clearance, lactate reduction) produces a compound endurance benefit. Research with citrulline malate at doses of 6 to 8g per day has demonstrated meaningful improvements in both high-intensity exercise performance and aerobic endurance, with reduced perceived exertion and muscle soreness. The BiotechUSA formula is designed for flexible dosing — 1 serving (3g) as a baseline, up to 2 to 3 servings (6 to 9g) for athletes targeting the higher research doses.

🔄 Accelerated post-exercise recovery Citrulline malate supplementation reduces muscle soreness (DOMS) in the 24 to 72 hours following intense resistance exercise. This effect has been linked to improved blood flow during and after training, facilitating the clearance of metabolic waste products (lactate, ammonia, hydrogen ions) and the delivery of repair substrates to damaged muscle tissue.

🧩 Unflavored variant — the ideal stack base The unflavored variant contains only three ingredients: L-citrulline, malic acid and silicon dioxide. This extreme minimalism makes it the perfect base for custom pre-workout stacks. It can be combined with creatine, BCAA Zero, beta-alanine or any other powder supplement without adding competing flavours, sweeteners or colourants. Athletes who mix their own formulas frequently use the unflavored citrulline malate as their pump foundation.

🎯 Goal guide

🏋️ Mass gain: 1 to 2 servings pre-workout. Maximises pump and nutrient delivery to muscle during training under a caloric surplus.

🔥 Weight loss / cutting: 1 to 2 servings pre-workout. Zero calories, enhanced blood flow during caloric deficit training.

⚖️ Body recomposition: 1 to 2 servings pre-workout. Sustained endurance and pump support for high-frequency training.

Serving suggestion

Mix 1 serving (3g = ½ scoop = 1 level teaspoon) in 300ml of cold water or sparkling water. Shake well in a shaker bottle. Consume before or during training. Can be taken up to 3 servings per day for athletes targeting the higher research doses. Do not exceed the recommended daily dosage. Not recommended for children or pregnant and nursing women.

Best times to enjoy it

⏰ 15 to 30 minutes before training The optimal pre-workout window: citrulline malate reaches effective plasma concentration within 30 to 60 minutes of consumption. Taking it 15 to 30 minutes before the first set ensures peak nitric oxide production aligns with the start of training.

🏋️ During training (intra-workout) For longer sessions (over 60 minutes), splitting the dose between pre-workout and mid-workout maintains citrulline plasma levels throughout the entire session, preventing the drop-off that occurs when a single pre-workout dose is exhausted mid-session.

🍋 In sparkling water (lime variant) The lime flavour pairs naturally with sparkling water for a refreshing pre-workout sparkling citrus drink. The acidity of the malic acid component amplifies the citrus sensation.

🧪 In a custom pre-workout stack (unflavored variant) The unflavored variant is specifically designed for stack mixing. Combine with BCAA Zero, creatine monohydrate and beta-alanine in the same shaker for a complete custom pre-workout with no conflicting flavours.

Daily protein target reminder

Citrulline Malate is a performance supplement, not a protein source. For training adaptations to fully materialise, adequate daily protein intake remains essential. Current sports nutrition science recommends 1.6 to 2.2g of protein per kg of body weight per day for active individuals.

Goal-specific guidance

For strength and bodybuilding: Use 1 to 2 servings (3 to 6g) 15 to 30 minutes before resistance training. The vasodilation effect maximises intra-workout muscle pump — a function that goes beyond aesthetics to provide genuine performance benefit through improved oxygen and nutrient delivery to working muscles throughout every set.

For endurance sports: Use 2 to 3 servings (6 to 9g) before endurance training or competition. The malate component's Krebs cycle support and ammonia-clearing function are most significant during prolonged aerobic efforts where mitochondrial energy demand and ammonia accumulation are highest. For cycling, running, triathlon and rowing, citrulline malate at the research-supported 6 to 8g dose range is one of the most evidence-grounded performance supplements available.

🏅 Sport Nutrition "Did you know?"

L-citrulline is a more effective oral nitric oxide precursor than L-arginine — a fact that surprised researchers when it was first demonstrated. The reason is pharmacokinetics: orally administered L-arginine is substantially degraded by the enzyme arginase in the gut and liver before it can reach the bloodstream ("first-pass effect"), meaning that much of an arginine supplement never reaches the blood vessels where it would increase NO production. L-citrulline bypasses this first-pass degradation entirely and is converted back to L-arginine specifically in the kidneys, where it enters circulation directly. Studies comparing oral citrulline to oral arginine at equivalent doses consistently show that citrulline produces higher plasma arginine levels and greater NO-dependent vasodilation than arginine itself — making citrulline the pharmacologically superior choice for nitric oxide supplementation.

Full ingredient list by variant

Unflavored: L-citrulline 49.8%, acid (malic acid) 49.8%, anti-caking agent (silicon dioxide).

Lime: L-citrulline 46.5%, acid (malic acid) 46.5%, flavourings, sweetener (sucralose), bulking agent (polydextrose), anti-caking agent (silicon dioxide), colourants (tartrazine, indigotine).

Key ingredient breakdown

Allergens

Allergens: No major allergens in the formula itself. Made in a plant that also manufactures products containing milk, egg, gluten, soy, peanuts, nuts, celery, fish, crustaceans, molluscs and sulphur dioxide. Always refer to the current product label for the most up-to-date allergen information.

Product characteristics:

• Sugar-free
• Aspartame-free
• Gluten-free (in composition)
• GMO-free
• Vegan (both variants)
• No preservatives
• No stimulants — suitable for caffeine-sensitive individuals
• Unflavored variant: 3-ingredient formula, ideal for custom stacks

Nutritional values per serving

Active ingredient profile per serving

Flexible dosing guide

Bag duration guide

Q1 — What is the difference between L-citrulline and citrulline malate? L-citrulline is the pure amino acid. Citrulline malate is L-citrulline bound to malic acid in a 1:1 ratio. The malate component is not a passive excipient — it actively contributes to energy metabolism as a Krebs cycle intermediate and adds specific endurance and fatigue-reduction benefits that pure L-citrulline does not provide alone. For performance-oriented supplementation, citrulline malate is generally the preferred form. For pure vasodilation and pump with minimal additional compounds, pure L-citrulline may be preferred. Most sports science research on citrulline for athletic performance has used citrulline malate — making the malate form the better-evidenced choice for training contexts.

Q2 — Does Citrulline Malate contain any stimulants? No. Citrulline Malate by BiotechUSA contains no caffeine, no stimulants, no thermogenic compounds and no hormonal modulators. It works entirely through the nitric oxide pathway (vasodilation) and the metabolic pathway (Krebs cycle, ammonia clearance). This makes it suitable for athletes who are caffeine-sensitive, who train in the evening, or who want a non-stimulant performance supplement that can be stacked with or used instead of caffeine-containing pre-workouts.

Q3 — Can people with high blood pressure take Citrulline Malate? Yes — BiotechUSA confirms this on their official FAQ. The vasodilatory effect of citrulline (via nitric oxide) may actually be beneficial for individuals with hypertension by supporting normal blood vessel tone. However, individuals on medication for hypertension should consult their physician before beginning citrulline malate supplementation to confirm there are no interactions with their specific treatment.

Q4 — Which variant should I choose — Unflavored or Lime? Choose Unflavored if you regularly mix your own pre-workout stacks with multiple powder supplements, prefer to avoid any additional flavourings, sweeteners or colourants, or want to add citrulline to an existing flavoured product without altering the taste. Choose Lime if you prefer a standalone ready-to-drink pre-workout with a pleasant citrus flavour, particularly in sparkling water. Both variants deliver identical citrulline malate doses and nutritional profiles at the serving level.

Q5 — How many servings does the 300g bag provide and what is the optimal daily dose? At 3g per serving, the 300g bag provides 100 servings. At 1 serving per day, this represents over 3 months of use. The research-supported dose range for citrulline malate performance benefits is 6 to 8g per day (2 to 3 servings), which gives approximately 33 to 50 days per bag. Athletes should calibrate their daily dose to their training intensity and objectives, starting at 1 serving and progressing to 2 to 3 servings as tolerance and need dictate.