Pump supplements are designed to boost nitric oxide production, increasing blood flow to muscles during training for fuller, more vascular pumps. The best formulas combine ingredients like L-citrulline, L-arginine, and nitrates to enhance vasodilation, improve nutrient delivery, and support endurance through intense workouts.
Quick Comparison
Product
Key Ingredient
Form
Best For
Rating
Snap Supplements Nitric Oxide
L-Arginine, L-Citrulline
Capsules
Best Overall
9.5/10
Iron Brothers Nitric Oxide
L-Arginine, Beetroot
Capsules
Best for Vascularity
9.4/10
Jacked Factory N.O. XT
Nitrosigine, L-Citrulline
Capsules
Best Premium
9.3/10
Natures Craft Nitric Oxide
L-Arginine, L-Citrulline
Capsules
Best Value
9.2/10
Carlyle Nitric Oxide
L-Arginine, L-Citrulline
Capsules
Best Budget Pick
9.0/10
FORCE FACTOR Nitric Oxide
L-Arginine, L-Citrulline
Capsules
Best for Beginners
8.9/10
Horbäach Nitric Oxide Beet Root
Beetroot, Nitrates
Capsules
Best Beet-Based
8.8/10
1. Snap Supplements Nitric Oxide – Best Overall
Sale
Snap Supplements Nitric Oxide Supplement with L-Arginine to Support Energy, Quick Recovery, Heart Health, Muscle Growth & Circulation, 90 Vegetarian Capsules
Supports Oxygen Delivery & Natural Energy – Nitric Oxide plays a role in circulation and energy production, supporting healthy circulation and daily vitality. Our Nitric Oxide Booster supports natural nitric oxide levels and features ginseng root, traditionally used to promote stamina, endurance, and sustained energy—without stimulants or added sugars.
Promotes Healthy Circulation & Cardiovascular Wellness – By supporting healthy blood flow throughout the body, our nitric oxide supplement promotes natural circulation and helps maintain heart and overall circulatory wellness. This blend helps you stay active and feel good, naturally.
L-Arginine & L-Citrulline For Active Energy & Performance – Formulated with three forms of L-Arginine and L-Citrulline, key amino acids that help support the body’s natural nitric oxide production, this supplement promotes energy production, supports healthy immune function, and helps maintain muscle health and recovery. Because natural production may vary, supplementing with L-Arginine can help support circulation, stamina, workout endurance, and overall wellness for an active lifestyle.
Enhance Your Wellness Routine: Ideal for fitness enthusiasts and active adults who want to support natural energy, workout recovery, and healthy circulation. Best used alongside a balanced diet, regular exercise, and your favorite gym supplements. Convenient for use at home, in the gym, or on the go.
Quality You Can Trust: Our vitamins and supplements are crafted by health experts and manufactured in the USA with globally sourced ingredients. This supplement is non-GMO, free of major allergens, gluten-free, and manufactured in a GMP-certified facility to ensure purity, potency, and quality. It contains no gelatin, dairy, or other animal-derived substances – making it a great option for vegans & vegetarians.
Snap Supplements delivers a well-rounded nitric oxide booster that combines proven pump-enhancing ingredients with circulation support for gym performance and cardiovascular health.
Each serving provides L-arginine and L-citrulline alongside beetroot extract and other nitric oxide precursors to support vasodilation and blood flow. The formula comes in easy-to-swallow vegetarian capsules with a 60-count bottle providing a full month’s supply. Snap Supplements is third-party tested and manufactured in a GMP-certified facility in the USA.
Pros:
Combines L-arginine, L-citrulline, and beetroot for multi-pathway NO support
Third-party tested for quality assurance
Vegetarian capsules with no artificial fillers
Cons:
Proprietary blend makes exact dosages unclear
Only available in capsule form
Best for: Athletes wanting a comprehensive nitric oxide supplement that covers multiple NO production pathways
2. Iron Brothers Nitric Oxide – Best for Vascularity
Iron Brothers Nitric Oxide Supplement for Men & Women | Pre-Workout Nitric Oxide Booster for Enhanced Muscle Pump, Blood Flow & Endurance | L-Arginine, L-Citrulline, Pine Bark Extract | 120 Vegan Caps
Full, Energized Muscle Pump with Iron Brothers Nitric Oxide Supplement for Men & Women: Features a Quad-Action Nitric Oxide Formula with L-Arginine, L-Citrulline & Agmatine Sulfate to support a full muscle pump that lasts longer and doesn’t fade right away.
Support Healthy Blood Flow & Circulation: Our nitric oxide for women is formulated with Pine Bark Extract, Niacin & BioPerine, to support smooth circulation, efficient nutrient & oxygen delivery to active muscles – fueling your body during physical activity.
Boost & Sustain Your Nitric Oxide Levels with a Double-Lock Formula: This blend combines Niacin to support blood vessel dilation, maintain nitric oxide availability, and support sustained blood flow, endurance, and performance during intense workouts.
100% Caffeine-Free, Stimulant-Free Composition: Our pre-workout nitric oxide booster for men is designed to support clean workout energy & endurance without jitters or crashes. Ideal for late-day training or stacking with other performance supplements.
Vegan, Easy-To-Swallow Capsules with Maximum Absorption: What’s the point of a pump formula if your body can’t absorb it? Our nitric oxide capsules for men include black pepper extract to enhance nutrient uptake and absorb the key ingredients efficiently.
Iron Brothers delivers a pre-workout nitric oxide booster specifically formulated for enhanced muscle pumps and visible vascularity during training.
This formula features L-arginine, L-citrulline, and beetroot extract to support nitric oxide production through multiple metabolic pathways. The capsule format provides 60 servings per bottle and is designed for both men and women. Iron Brothers manufactures in GMP-certified facilities and includes no artificial colors or unnecessary fillers.
Pros:
Designed specifically for gym performance and vascularity
Clean formula without artificial additives
Suitable for both men and women
Cons:
May require stacking with a stimulant pre-workout for energy
Capsule dosing requires multiple pills per serving
Best for: Bodybuilders and strength athletes focused on maximizing visible vascularity and muscle fullness
3. Jacked Factory N.O. XT – Best Premium
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Jacked Factory’s N.O. XT uses patented Nitrosigine alongside clinically studied L-citrulline and L-glutathione for a science-backed approach to nitric oxide production.
Each 3-capsule serving delivers Nitrosigine (inositol-stabilized arginine silicate), which research shows provides faster and more sustained arginine elevation compared to standard arginine supplements. The formula also includes BioPerine for enhanced absorption. N.O. XT is third-party tested by Informed Sport, making it suitable for competitive athletes. Each bottle contains 90 capsules for a 30-day supply.
Pros:
Patented Nitrosigine for superior arginine bioavailability
Informed Sport certified for banned substance testing
Stimulant-free for stacking with any pre-workout
Cons:
Premium price point compared to basic NO boosters
Only available in capsule form
Best for: Serious athletes who want clinically dosed, third-party verified pump ingredients
4. Natures Craft Nitric Oxide – Best Value
Natures Craft Energizing Nitric Oxide Supplement for Men – Nitric Oxide Pills for Men with L-Arginine L-Citrulline Amino Acids for Intense Muscle Growth Intense Energy and Smooth Recovery – 60 Count
Get those Gains – Our natural nitric oxide pre workout for men is powered by flavonoids and amino acids to increase nitric oxide levels and give you that ripped look
Natural formula – Unlike many other nitric oxide supplements for men our formula has no unnecessary additives to make space for extra L arginine and citrulline beet powder and AKG for real results
Amino acids supplement – Enhance your manly lifestyle with our muscle builder pre workout pills for better energy and size enlargement that won’t let you down in the gym or at home
Natural Energy – Just try our NO Rush preworkout energy pills and feel the Natures Craft difference in your daily exercise unlike so many other natural energy supplements for men
Natures Craft Quality – We are proud to be a leading name in natural mens health and muscle gainer bodybuilding supplements because we believe real results come from real ingredients you can trust
Natures Craft offers an affordable nitric oxide pill that packs L-arginine, L-citrulline, and supporting nutrients into a budget-friendly formula without sacrificing quality.
This energizing nitric oxide supplement combines L-arginine with L-citrulline and additional circulation-boosting ingredients to support blood flow and workout performance. The formula is designed for daily use and comes in easy-to-swallow capsules. Natures Craft products are manufactured in GMP-certified facilities in the USA.
Pros:
Excellent price-to-value ratio for a nitric oxide supplement
Clean ingredient profile with no artificial fillers
GMP-certified manufacturing
Cons:
Lower doses compared to premium competitors
May need to double up servings for experienced users
Best for: Budget-conscious lifters who want reliable pump support without spending on premium brands
5. L-Arginine with L-Citrulline Capsules – Best Simple Formula
L-Arginine Capsules with L-Citrulline – Nitric Oxide Supplement – L Arginine and L Citrulline Blend – 120 Count – Vegan, Non-GMO Capsules for Performance, Endurance and Muscle Support – 2 Month Supply
L-Arginine L-Citrulline Complex – Each serving contains a 1200mg blend of L-Arginine and L-Citrulline, ensuring maximum performance and muscle support during physical activities.
Supports Nitric Oxide Production – Our l arginine supplement for men and women helps support nitric oxide production, which may promote peak performance during exercise and support overall physical vitality.
Exercise Endurance – Fuel your active lifestyle with l-arginine for men and women, formulated to assist with endurance and recovery, helping you stay on top of your fitness goals.
Two-Month Supply – With 120 capsules per bottle, our L-Arginine and L-Citrulline supplement offers a convenient 2-month supply, providing long-term support for your fitness and wellness goals with ease.
Vegan & Non-GMO – Crafted with vegan and non-GMO ingredients, our L-Arginine capsules are produced to meet high standards, ensuring you get a reliable and hassle-free supplement for your active lifestyle.
This straightforward two-ingredient nitric oxide supplement pairs L-arginine with L-citrulline for a clean, no-nonsense approach to boosting blood flow and muscle pumps.
The formula focuses exclusively on the two most research-backed nitric oxide precursors without extra fillers, proprietary blends, or unnecessary additives. Each serving delivers a combined dose of L-arginine and L-citrulline in capsule form. The simplified formula makes it easy to know exactly what you’re putting into your body and allows for flexible dosing based on individual needs.
Pros:
Transparent formula with just two proven NO precursors
No proprietary blends or hidden ingredients
Easy to stack with other supplements
Cons:
Lacks additional pump-enhancing ingredients like beetroot or nitrates
Multiple capsules required per serving
Best for: Minimalists who want a clean, two-ingredient nitric oxide supplement they can stack with other products
6. FORCE FACTOR Nitric Oxide Booster – Best for Beginners
No products found.
FORCE FACTOR provides an entry-level nitric oxide supplement with a gentle formula that’s well-suited for those new to pump supplements.
Each serving delivers L-arginine and L-citrulline to support nitric oxide production and enhance blood flow during workouts. The formula comes in a 120-capsule bottle and is designed for daily pre-workout use. FORCE FACTOR is a well-known sports nutrition brand widely available on Amazon with thousands of positive reviews from gym-goers at every level.
Pros:
Established brand with extensive customer reviews
Gentle formula suitable for first-time NO supplement users
120 capsules per bottle for extended supply
Cons:
Individual ingredient doses on the lower side
Experienced athletes may need to stack with additional products
Best for: Beginners looking for an accessible, well-reviewed introduction to nitric oxide supplementation
7. Carlyle Nitric Oxide 3000mg – Best Budget Pick
No products found.
Carlyle delivers a high-potency 3000mg nitric oxide formula at one of the lowest price points in the category, making it an excellent budget option for consistent pump support.
Each serving provides 3000mg of a nitric oxide complex featuring L-arginine and L-citrulline. The 120-capsule bottle offers a full 60-day supply at roughly half the cost of many premium competitors. Carlyle products are non-GMO, gluten-free, and manufactured in the USA under strict quality standards.
Pros:
Among the most affordable nitric oxide options on Amazon
60-day supply per bottle at the recommended dose
Non-GMO and gluten-free
Cons:
Basic formula without patented or premium ingredients
Large capsules may be difficult for some to swallow
Best for: Anyone wanting a reliable, no-frills nitric oxide supplement at the best possible price
8. Horbäach Nitric Oxide Beet Root – Best Beet-Based
No products found.
Horbäach combines beetroot extract with nitric oxide precursors in a vegetarian capsule format for those who prefer a natural, plant-based approach to boosting blood flow.
This formula features 180 capsules of concentrated beetroot alongside nitrates and precursor compounds that support nitric oxide production through the nitrate-nitrite-NO pathway. Beetroot is one of the most research-backed natural sources of dietary nitrates, with studies showing improved exercise performance and blood flow. Horbäach products are non-GMO, gluten-free, and made in the USA.
Pros:
Natural beetroot-based formula using the nitrate pathway
180 capsules for a generous supply
Vegetarian-friendly and non-GMO
Cons:
Beetroot alone may produce less intense pumps than amino acid-based formulas
May cause temporary red-colored urine (harmless)
Best for: Athletes who prefer natural, plant-based pump support through dietary nitrates rather than synthetic amino acids
How to Choose the Best Pump Supplement
The most effective pump supplements contain clinically studied ingredients that boost nitric oxide production through one or more metabolic pathways. L-citrulline is widely considered the gold standard, with research supporting doses of 6-8g for significant improvements in blood flow and exercise performance. L-arginine is the classic nitric oxide precursor, though it has lower bioavailability than citrulline when taken orally. The best formulas combine both amino acids or pair them with nitrate sources like beetroot extract for dual-pathway activation.
Dosage matters significantly with pump supplements. Many budget products include L-citrulline or L-arginine at doses well below what clinical studies use. Look for products that either disclose exact ingredient amounts or provide at least 3000mg of combined NO precursors per serving. Patented ingredients like Nitrosigine offer improved bioavailability at lower doses, which can justify a higher price point.
Choose between capsules and powders based on convenience and flexibility. Capsules are portable and pre-dosed but may require taking 3-4 pills per serving. Powders allow for custom dosing and often contain higher overall amounts, but require mixing. Stimulant-free formulas are ideal for stacking with a caffeinated pre-workout or for evening training sessions.
Quality certifications add a layer of confidence. Look for products manufactured in GMP-certified facilities, and prioritize those with third-party testing through organizations like Informed Sport, NSF, or USP. Competitive athletes should specifically seek Informed Sport certification to ensure the product has been tested for banned substances.
Frequently Asked Questions
What are pump supplements and how do they work?
Pump supplements contain ingredients that boost nitric oxide production in the body, primarily L-citrulline, L-arginine, and dietary nitrates from sources like beetroot. Nitric oxide relaxes and widens blood vessels (vasodilation), which increases blood flow to working muscles during exercise. This enhanced blood flow delivers more oxygen and nutrients while creating the “pump” sensation of fuller, more vascular muscles during training.
When should I take a pump supplement?
Most pump supplements work best when taken 30-60 minutes before training to allow the ingredients to enter your bloodstream and begin boosting nitric oxide levels. Capsule-based products may need slightly more lead time than powders for absorption. For beetroot-based products, some research suggests benefits from consistent daily use rather than acute pre-workout dosing, as dietary nitrate levels build up over several days.
Can I stack a pump supplement with a pre-workout?
Yes, stim-free pump supplements are specifically designed to be stacked with caffeinated pre-workouts. This combination lets you get both the energy and focus from caffeine alongside enhanced blood flow and muscle pumps from nitric oxide boosters. Just avoid doubling up on ingredients that appear in both products, particularly L-citrulline and beta-alanine, to stay within safe dosage ranges.
Are pump supplements safe?
Pump supplements based on L-citrulline, L-arginine, and beetroot are generally well-tolerated with a strong safety profile. Common mild side effects include stomach upset when taken on an empty stomach and occasional headaches from increased blood flow. Anyone taking blood pressure medications or nitrate drugs should consult a healthcare provider before use, as nitric oxide supplements can affect blood pressure levels.
How long does it take for pump supplements to work?
Most users notice enhanced pumps during their first workout after taking a pump supplement, typically within 30-60 minutes of ingestion. However, the full benefits tend to build over 1-2 weeks of consistent use as nitric oxide levels optimize. Beetroot-based products in particular may take 3-5 days of daily supplementation before producing peak nitrate levels in the body.
Do pump supplements actually build muscle?
Pump supplements don’t directly build muscle the way creatine or protein does. However, the increased blood flow they provide delivers more oxygen and nutrients to working muscles, which can support better training performance, endurance, and recovery. Over time, the ability to train harder and longer with improved nutrient delivery can indirectly contribute to greater muscle growth when combined with proper training and nutrition.