Best Citrulline Supplements for Pump & Performance (2026) – Top 10 Reviewed
L-citrulline has become one of the most popular performance supplements for athletes and gym-goers chasing better pumps, improved endurance, and faster recovery. This amino acid converts to L-arginine in the body, boosting nitric oxide production and enhancing blood flow to working muscles.
The best citrulline supplements deliver clinically effective doses (3-6g for pure L-citrulline, 6-8g for citrulline malate) without unnecessary fillers. Here are our top 10 picks for 2026.
| Product | Key Ingredients | Servings | Form | Best For |
|---|---|---|---|---|
| BulkSupplements L-Citrulline Powder | Pure L-Citrulline 3g | 167 | Powder | Best Overall |
| Nutricost L-Citrulline Capsules | L-Citrulline 1.5g | 90 | Capsules | Best Value |
| NOW Sports L-Citrulline Extra Strength | L-Citrulline 1.2g | 120 | Tablets | Best Budget Option |
| Kaged L-Citrulline Powder | Fermented L-Citrulline 2g | 100 | Powder | Best for Purity |
| L-Arginine with L-Citrulline Capsules | L-Arginine + L-Citrulline | 60 | Capsules | Best Combo Stack |
| Doctor’s Best L-Citrulline Powder | Pure L-Citrulline 3g | 66 | Powder | Best for Vegans |
| Organic Beet Root with L-Citrulline Gummies | Beet Root, L-Citrulline, L-Arginine | 60 | Gummies | Best Gummies |
| EVL ENGN Shred Pre-Workout | Citrulline + Thermogenics | 30 | Powder | Best Pre-Workout with Citrulline |
| Double Wood L-Citrulline Capsules | L-Citrulline 1.2g | 105 | Capsules | Best High-Potency Capsules |
| Sunwarrior Pre-Workout with L-Citrulline | L-Citrulline, Beta-Alanine, Caffeine | 30 | Powder | Best Clean Pre-Workout |
1. BulkSupplements L-Citrulline Powder – Best Overall
Why it stands out: BulkSupplements delivers pharmaceutical-grade L-citrulline in a no-frills powder format that lets you control your exact dosage. With 167 servings per container, it’s also one of the most economical options on the market.
Each 3g serving provides a clinically relevant dose of pure L-citrulline with zero additives, fillers, or artificial ingredients. The unflavored powder mixes easily into water, juice, or your existing pre-workout stack—simply add half a tablespoon to your beverage of choice and stir until dissolved. BulkSupplements manufactures in a cGMP-certified facility and conducts third-party testing at every production stage, ensuring you’re getting exactly what’s on the label. The resealable bag keeps the powder fresh through all 167 servings.
What sets BulkSupplements apart is their commitment to transparency and purity. The company publishes certificates of analysis for their products, allowing customers to verify potency and confirm the absence of contaminants like heavy metals. For athletes seeking maximum pump and blood flow support, you can easily double the serving to 6g for high-intensity training days without breaking the bank.
Pros:
- Pure single-ingredient formula with no fillers
- Third-party tested for purity and potency
- Excellent value at around $0.12 per serving
- Flexible dosing allows you to dial in your ideal amount
Cons:
- Unflavored powder may not appeal to everyone
Best for: Anyone who wants a clean, versatile citrulline powder they can add to any drink or supplement stack.
2. Nutricost L-Citrulline Capsules – Best Value
Why it stands out: Nutricost strikes the perfect balance between quality and affordability, delivering 1,500mg of L-citrulline per two-capsule serving in an easy-to-swallow format that requires no mixing or measuring.
The 180-count bottle provides 90 servings, making it one of the most cost-effective capsule options available. Nutricost manufactures in an FDA-registered, GMP-compliant facility and keeps the formula simple—just L-citrulline in a gelatin capsule with minimal excipients. The capsules are non-GMO and gluten-free, though not suitable for vegetarians due to the gelatin shell. For optimal pump benefits, take 2-4 capsules 30 minutes before training.
Pros:
- Affordable price point under $20 for 90 servings
- Convenient capsule format—no mixing required
- Manufactured in GMP-compliant facility
- Non-GMO and gluten-free
Cons:
- Lower dose per serving means taking multiple capsules
- Contains gelatin (not vegan-friendly)
Best for: Budget-conscious athletes who prefer the convenience of capsules over powders.
3. NOW Sports L-Citrulline Extra Strength – Best Budget Option
Why it stands out: NOW Foods has been producing quality supplements since 1968, and their extra-strength L-citrulline tablets deliver 1,200mg per tablet—significantly more than their standard 750mg capsules.
Each bottle contains 120 tablets with a vegetarian-friendly coating, making this accessible to a wider range of users. NOW holds an NPA A-rated GMP certification, meaning every aspect of their manufacturing process meets strict quality standards. The tablets support nitric oxide production, protein metabolism, and immune function. Take 1-2 tablets between meals for best absorption, or 30-60 minutes before training for performance benefits.
NOW’s L-citrulline also plays a role in the urea cycle, helping rid the body of ammonia—a byproduct of protein metabolism that can contribute to fatigue during intense exercise. This makes it particularly valuable for high-volume training sessions or endurance activities. The family-owned company packages all products in the USA and has built a reputation for consistent quality across their extensive supplement line. While you’ll need 2-3 tablets to reach the clinical dose range of 3-6g, the affordability makes this a smart choice for everyday supplementation.
Pros:
- Trusted brand with over 50 years in the supplement industry
- Higher potency than standard citrulline capsules
- Vegetarian-friendly tablet coating
- GMP-certified manufacturing
Cons:
- Tablets can be large and difficult to swallow for some
- Need 2-3 tablets to reach optimal pre-workout dose
Best for: Those who want a reputable, budget-friendly option from an established supplement brand.
4. Kaged L-Citrulline Powder – Best for Purity
Why it stands out: Kaged uses a patented fermentation process to create 100% plant-based L-citrulline that’s banned-substance tested—critical for competitive athletes subject to drug testing.
Unlike citrulline malate products that are only about 50% actual citrulline by weight, Kaged delivers pure L-citrulline with no malic acid filler. Each 2g scoop provides exactly what’s advertised, and you can easily double up for a 4g pre-workout dose. The unflavored powder dissolves cleanly in any beverage without affecting taste. With 100 servings per container at around $0.25 per scoop, it’s premium quality without the premium price tag. Kaged’s Informed Sport certification means every batch is tested for over 200 banned substances.
Pros:
- 100% plant-based via patented fermentation process
- Banned substance tested (Informed Sport certified)
- Pure L-citrulline—not diluted with malic acid
- 100 servings per container
Cons:
- Slightly higher price than bulk powder options
- 2g serving may require doubling for full effect
Best for: Competitive athletes who need third-party verification and the cleanest possible formula.
5. L-Arginine with L-Citrulline Capsules – Best Combo Stack
Why it stands out: This combination formula delivers both L-arginine and L-citrulline together, targeting nitric oxide production through two complementary pathways for enhanced pump and performance benefits.
The 120-count bottle provides a 2-month supply with a blend designed for performance, endurance, and muscle support. L-citrulline converts to L-arginine in the body, but taking both together can saturate the nitric oxide pathway more effectively than either alone. While citrulline is superior for raising sustained arginine levels, adding direct arginine supplementation provides an immediate boost that complements citrulline’s longer-acting effects.
The vegan, non-GMO capsules are free from common allergens including gluten, dairy, and soy, and manufactured in a GMP-compliant facility. Research suggests this combination may improve exercise tolerance and reduce muscle soreness more effectively than single-ingredient supplements. The capsules are easy to swallow and don’t require any mixing—simply take with water 30-60 minutes before training or between meals for general circulation support.
Pros:
- Synergistic combination targets multiple NO pathways
- Vegan and non-GMO formula
- 2-month supply in one bottle
- Supports both performance and recovery
Cons:
- May not suit those who prefer single-ingredient supplements
- Proprietary blend doesn’t disclose exact amounts of each ingredient
Best for: Users who want the combined benefits of arginine and citrulline in one convenient supplement.
6. Doctor’s Best L-Citrulline Powder – Best for Vegans
Why it stands out: Doctor’s Best provides a clean, vegan-friendly L-citrulline powder that’s third-party tested for purity and free from common allergens including gluten, soy, and GMO ingredients.
Each 3g serving delivers a clinically effective dose of pure L-citrulline to support circulatory health, exercise performance, and muscle recovery. The powder has no added flavors, sweeteners, or fillers—just pharmaceutical-grade L-citrulline that mixes smoothly into your beverage of choice. Doctor’s Best has built a reputation on science-based formulations, and their citrulline meets strict quality standards including being manufactured in a GMP-certified facility. The 200g container provides approximately 66 servings.
Pros:
- Certified vegan and free from animal-derived ingredients
- Third-party tested for quality assurance
- Clean formula with no artificial additives
- Reputable brand known for science-backed supplements
Cons:
- Fewer servings per container than some competitors
- Unflavored powder requires mixing with flavored beverages
Best for: Vegans and vegetarians who want a pure, plant-based citrulline supplement without any animal derivatives.
7. Organic Beet Root with L-Citrulline Gummies – Best Gummies
Why it stands out: These sugar-free gummies combine L-citrulline with organic beet root, L-arginine, grape seed, pomegranate, and saffron for a comprehensive nitric oxide formula in a tasty, convenient format that requires no mixing or pill-swallowing.
The 120-count bottle provides 60 servings of vegan gummies that deliver multiple nitric oxide precursors in one delicious dose. Beet root is naturally rich in dietary nitrates, which the body converts to nitric oxide independently of the arginine-citrulline pathway—this dual-pathway approach may enhance blood flow and oxygen delivery more effectively than citrulline alone. The addition of grape seed extract provides antioxidant support, while pomegranate has been shown in studies to further enhance nitric oxide bioavailability.
These gummies are sugar-free, making them suitable for those watching their carbohydrate intake or following ketogenic diets. The vegan formula contains no gelatin or animal-derived ingredients. Take 2 gummies daily, ideally 30-60 minutes before exercise for performance benefits or any time for general circulation and vitality support. While the citrulline dose is lower than pure powder supplements, the synergistic multi-ingredient formula may compensate for individual ingredient amounts.
Pros:
- Multi-ingredient nitric oxide support formula
- Convenient, great-tasting gummy format
- Sugar-free and vegan-friendly
- Combines beet root nitrates with amino acid precursors
Cons:
- Lower citrulline dose than pure powder supplements
- More expensive per serving than capsules or powders
Best for: Those who dislike pills and powders but still want comprehensive nitric oxide support.
8. EVL ENGN Shred Pre-Workout – Best Pre-Workout with Citrulline
Why it stands out: EVL’s thermogenic pre-workout delivers citrulline alongside a complete performance formula including caffeine, beta-alanine, and metabolism-supporting ingredients for energy, focus, and fat-burning support during training.
This isn’t just a citrulline supplement—it’s a full pre-workout experience with a Viral Score of 77, indicating strong market performance and customer satisfaction. The formula combines citrulline for pumps with caffeine for energy, beta-alanine for muscular endurance, and thermogenic compounds like green tea extract to support metabolic rate during training. Available in Fruit Punch and other flavors, it mixes smoothly and tastes significantly better than unflavored citrulline powders.
EVL designed ENGN Shred to be creatine-free, making it suitable for those who prefer to cycle creatine separately or avoid water retention. Each container provides 30 servings—a full month of pre-workout support. The combination of pump-enhancing citrulline with energy and thermogenic ingredients makes this ideal for those pursuing both performance and body composition goals simultaneously. Take one scoop mixed with 6-8 oz of water 15-30 minutes before training.
Pros:
- Complete pre-workout formula with citrulline plus energy compounds
- Thermogenic ingredients support fat-burning goals
- Great taste in multiple flavor options
- No need to stack multiple supplements
Cons:
- Contains caffeine (not ideal for stimulant-sensitive users)
- More expensive than standalone citrulline
- Citrulline dose may be lower than standalone products
Best for: Those who want citrulline as part of a comprehensive pre-workout rather than a single ingredient.
9. Double Wood L-Citrulline Capsules – Best High-Potency Capsules
Why it stands out: Double Wood delivers 1,200mg of L-citrulline per serving in their 210-count bottle, providing excellent value with over 100 servings per container from a brand known for quality nootropics and sports supplements.
Double Wood has built a loyal following for their straightforward, effective supplements, and their L-citrulline continues that tradition. The formula focuses on supporting muscle pump, recovery, and nitric oxide production without unnecessary additives. Each bottle provides 105 servings (at 2 capsules per serving), making it one of the better values in the capsule category. The company manufactures in the USA in a GMP-compliant facility and conducts third-party testing for purity and potency.
Pros:
- 210 capsules provide excellent long-term value
- Trusted brand with strong customer reviews
- Made in USA in GMP-compliant facility
- Third-party tested for quality assurance
Cons:
- Requires 2 capsules per 1,200mg serving
- May need 4+ capsules for optimal pre-workout dosing
Best for: Users who want a high-quality capsule option with enough supply to last several months.
10. Sunwarrior Pre-Workout with L-Citrulline – Best Clean Pre-Workout
Why it stands out: Sunwarrior’s plant-based pre-workout delivers L-citrulline alongside beta-alanine and natural caffeine in a clean formula designed specifically for women and health-conscious athletes.
This Citrus Sunrise flavored powder combines performance ingredients with a focus on clean, plant-based nutrition. The formula includes L-citrulline for pumps and blood flow, beta-alanine for endurance, and natural caffeine for clean energy without the jitters. Each container provides 30 servings—a full month of pre-workout support. Sunwarrior is known for their commitment to organic, plant-based supplements, making this ideal for those who prioritize natural ingredients in their fitness stack.
Pros:
- Clean, plant-based formula with natural caffeine
- Designed with women’s performance needs in mind
- Includes beta-alanine for enhanced endurance
- Pleasant Citrus Sunrise flavor
Cons:
- Contains caffeine (may not suit evening workouts)
- Higher price point than basic citrulline powders
- Smaller serving count than standalone citrulline
Best for: Health-conscious athletes and women who want a clean pre-workout with citrulline and natural energy support.
What is L-Citrulline and Who Should Take It?
L-citrulline is a non-essential amino acid named after the Latin word for watermelon (citrullus), where it was first discovered. Your body naturally produces citrulline in the liver and intestines, but supplemental doses can significantly boost nitric oxide production beyond what diet alone provides. Once consumed, L-citrulline converts to L-arginine in the kidneys, which then becomes nitric oxide—a molecule that relaxes blood vessels and improves circulation.
Interestingly, research shows that supplementing with L-citrulline raises blood arginine levels more effectively than taking arginine directly. This is because oral arginine undergoes extensive breakdown in the liver before reaching systemic circulation, while citrulline bypasses this first-pass metabolism and converts to arginine in the kidneys. The result is more sustained elevation of both arginine and nitric oxide for better pumps and performance.
Athletes and gym-goers benefit most from citrulline supplementation, particularly those focused on strength training, endurance sports, or achieving better muscle pumps during workouts. Studies have shown citrulline can increase training volume by allowing more reps before failure, reduce muscle soreness by up to 40% post-exercise, and improve tolerance to high-intensity exercise. Beyond the gym, citrulline may also support cardiovascular health, help manage blood pressure in those with elevated levels, and even improve symptoms of mild erectile dysfunction by enhancing blood flow.
How to Choose the Right Citrulline Supplement
Key Forms to Understand
Pure L-citrulline and citrulline malate are the two main forms you’ll encounter. Pure L-citrulline delivers 100% of the amino acid, while citrulline malate combines citrulline with malic acid (typically in a 2:1 ratio). Both forms work, but citrulline malate products often contain only 50-67% actual citrulline by weight. If a label claims 6g of citrulline malate, you’re getting roughly 3-4g of actual citrulline. For this reason, many experts recommend pure L-citrulline or adjusting citrulline malate doses accordingly.
The malic acid in citrulline malate isn’t useless—it plays a role in energy production through the Krebs cycle and may help buffer lactic acid during intense exercise. Some athletes prefer citrulline malate for this reason, though research hasn’t conclusively shown it outperforms pure L-citrulline for performance benefits.
Optimal Dosing
Clinical research suggests 3-6g of pure L-citrulline or 6-8g of citrulline malate for performance benefits. Take your dose 30-60 minutes before training for best results, as blood levels peak within this window. Some users also benefit from splitting doses throughout the day for sustained nitric oxide support, particularly those using citrulline for cardiovascular or blood pressure benefits rather than purely athletic performance.
For beginners, start with 2-3g and assess tolerance before increasing. Most people experience no side effects, but starting lower allows you to gauge your individual response. On high-intensity training days, you can push toward the higher end of the 6g range for maximum pump and performance support.
Forms Compared: Powder vs. Capsules vs. Gummies
Powders offer the best value per gram and allow precise dosing, but require mixing. They’re ideal for those taking clinical doses of 3-6g, as this would require swallowing 6-12 capsules. Capsules provide convenience for travel and those who dislike powder taste, but cost more per serving and make high-dose supplementation impractical. Gummies offer palatability and convenience but typically contain lower doses and added sugars or sugar alcohols.
What to Avoid
Steer clear of supplements with proprietary blends that hide actual citrulline amounts, excessive fillers, or doses below 2g per serving. Also watch for products marketing “citrulline malate” at doses typically used for pure citrulline—you may be getting half the active ingredient you expect. Check for third-party testing certifications like NSF Certified for Sport, Informed Sport, or USP verification to ensure label accuracy and purity.
Side Effects and Precautions
L-citrulline is generally well-tolerated, with most people experiencing no adverse effects at recommended doses. The most commonly reported side effects include mild stomach discomfort, heartburn, and changes in bowel movements—particularly when taking higher doses on an empty stomach. Taking citrulline with food or starting with a lower dose (1-2g) and gradually increasing over a week can minimize digestive issues.
Because citrulline affects blood flow and can lower blood pressure, those taking antihypertensive medications, nitrates (including medications for angina), or drugs for erectile dysfunction (like sildenafil or tadalafil) should consult their doctor before supplementing. The combination could potentially cause blood pressure to drop too low, leading to dizziness, lightheadedness, or fainting. Pregnant and nursing women should also seek medical advice before use, as safety data in these populations is limited.
If you’re scheduled for surgery, discontinue citrulline at least two weeks beforehand, as its blood-flow effects could complicate procedures or interact with anesthesia. Those with kidney disease should use caution, as the kidneys are responsible for converting citrulline to arginine. When in doubt, consult a healthcare provider before adding citrulline to your supplement routine.
FAQs
How much L-citrulline should I take for better pumps?
Most research supports 3-6 grams of pure L-citrulline taken 30-60 minutes before training. If using citrulline malate, aim for 6-8 grams to get an equivalent amount of actual citrulline. Start at the lower end and increase based on your response.
When is the best time to take citrulline?
For workout benefits, take citrulline 30-60 minutes before training to allow blood levels to peak during exercise. For general cardiovascular support, timing matters less—just take it consistently each day.
How long does it take to notice results from citrulline?
Many users notice improved pumps and endurance within 1-2 weeks of consistent use. Blood pressure benefits may take 4-8 weeks to become apparent. Acute effects like enhanced pumps can be felt during your first workout after taking an adequate dose.
Can I stack citrulline with other supplements?
Yes, citrulline stacks well with most pre-workout ingredients including caffeine, beta-alanine, creatine, and beetroot. Combining citrulline with L-arginine may provide synergistic nitric oxide benefits. Avoid stacking with blood pressure medications without medical supervision.
Is L-citrulline better than L-arginine for pumps?
Research suggests L-citrulline is actually more effective at raising blood arginine levels than taking arginine directly. This is because citrulline bypasses liver metabolism and converts to arginine in the kidneys, resulting in more sustained elevation of both arginine and nitric oxide.
Are there any differences between citrulline powder and capsules?
Both forms deliver the same benefits—the main differences are convenience and dosing flexibility. Powders allow precise dosing and typically cost less per gram, while capsules offer portability and no mixing. Choose based on your preferences and whether you need larger doses (powders are often more practical for 3g+ servings).
Final Verdict
For the best overall citrulline supplement, BulkSupplements L-Citrulline Powder delivers unbeatable value with pure, third-party tested citrulline at around $0.12 per serving. The flexible dosing lets you dial in exactly what you need, whether that’s 3g for daily support or 6g for intense training sessions.
If you prefer capsules, Nutricost L-Citrulline offers excellent quality at a budget-friendly price point, though you’ll need multiple capsules to reach clinical doses. For an even more affordable tablet option, NOW Sports Extra Strength provides solid quality from a trusted brand.
Athletes who need verified purity should consider Kaged L-Citrulline—its Informed Sport certification and plant-based fermentation process make it ideal for competitive use where banned substance testing is a concern. And if you want citrulline as part of a complete pre-workout formula, EVL ENGN Shred combines pump ingredients with energy and thermogenic compounds for an all-in-one solution that supports both performance and body composition goals.
For those who prefer a multi-ingredient approach, the Organic Beet Root with L-Citrulline Gummies provide a tasty alternative that targets nitric oxide production through multiple pathways—perfect for people who don’t enjoy pills or powders.
