The 11 Best Nitric Oxide Supplements

Nitric Oxide Supplements are widely consumed because of the apparent health benefits that they provide.

L-arginine and L-citrulline are two popular non-essential amino acids that are used in such supplements. Both these lead to an increase in the production of nitric oxide in the body.

Nitric oxide is very critical for the health of the blood vessels. It acts as a vasodilator by relaxing the muscles of the vessels. It is also known to promote the release of insulin and growth hormones (1, 2).

Owing to their perceived benefits, many people take nitric oxide supplements to enhance their workout sessions or boost their libido (3, 4, 5).

However, as with all supplements, they work best with a combination of the right diet and exercise.

Let us take a look at some of the top nitric oxide supplements in the market, and review their advantages, dosages, and side effects.

Our Top Picks

1. Best All-in-One Nitric Oxide Formula: Formulation Factory Heart of Steel

2. Best Nitric Oxide Supplement for Virility: VigRX Nitric Oxide Support

3. Best Value Nitric Oxide Supplement: Nutricost Nitric Oxide Booster

4. Best for Muscle Recovery Support: Primaforce Nitric Oxide Booster

5. Best for Blood Flow and Vascularity: Nutrex Research NIOX Extreme Pumps

6. Best High Potency & Versatile Formula: Deal Supplement Nitric Oxide Booster 3,000mg

7. Best Overall: Double Wood Nitric Oxide Booster

8. Best Gluten-Free Nitric Oxide Supplement: BulkSupplements AAKG

9. Best Nitric Oxide Supplement Pills: UMZU Redwood Nitric Oxide Supplement

10. Best Nitric Oxide Powder: Old School Vintage Blast Pre-Workout

11. Best Nitric Oxide Supplement With Beetroot: Havasu Nutrition L-Arginine Nitric Oxide Booster

1. Best All-in-One Nitric Oxide Formula: Formulation Factory Heart of Steel

Price: $59.99

Formulation Factory’s Heart of Steel is a 10-in-1 metabolic maximizer that goes beyond a typical nitric oxide booster. With a synergistic blend of L-Citrulline, L-Arginine, Resveratrol, Ginseng, Ginkgo Biloba, Rhodiola Rosea, Coleus Forskohlii, CoQ10, Quercetin, and Capsaicin, it’s crafted for those seeking improved energy, stamina, cardiovascular health, and full-body resilience. This formula is stimulant-free, non-GMO, made in the USA, and GMP registered, appealing to users looking for a safe and effective all-in-one supplement.

Key Benefits

• Delivers a powerful, sustained energy boost without caffeine
• Supports healthy blood flow and blood pressure
• Promotes cardiovascular health with heart-friendly botanicals and antioxidants
• Enhances workout endurance, pump quality, and faster muscle recovery
• Helps reduce fatigue and improve overall well-being and focus

Key Ingredients

• L-Citrulline (1000 mg): Boosts nitric oxide for vascularity and muscle pumps
• L-Arginine (400 mg): Supports blood flow and cardiovascular health
• Resveratrol (200 mg): Antioxidant that protects the heart
• Ginseng, Ginkgo Biloba, Rhodiola Rosea, Coleus Forskohlii (200 mg each): Enhance stamina, stress response, and cognitive function
• CoQ10 (150 mg), Quercetin (150 mg): Support energy and recovery
• Capsaicin (50 mg): May help metabolism and fat oxidation

Pros

✔ True all-in-one formula—covers energy, endurance, heart, and recovery
✔ No stimulants or caffeine—energy without jitters or crashes
✔ High-potency clinical doses for maximum effect
✔ Convenient capsule form; easy to take, no mixing required
✔ Non-GMO, GMP registered, and third-party tested

Cons

❌ Premium price point compared to single-ingredient products
❌ 4-capsule serving size may not suit everyone
❌ Some users may prefer a simpler ingredient profile

Customer Feedback

• Energy Boost: Users frequently mention a dramatic increase in energy levels and stamina without any jitters.
• Endurance: Many report improved endurance and strength during various activities, from running to strength training.
• Pump Quality: Praised for helping with muscle pumps and providing a solid boost during workouts.
• Ingredients: Appreciated for being well-thought-out, effective, and including many heart-healthy, research-backed ingredients.
• Value for Money: Seen as a good all-in-one option, “worth every penny” thanks to the variety and quality of ingredients.
• Feel Good: Customers feel less fatigue, faster recovery, and lighter throughout the day.
• Focus: Many say it helps them stay focused, mentally sharp, and alert during the day.
• Ease of Use: Capsules are easy to take, swallow, and convenient for daily use.

Best Suited For

• Those seeking an all-in-one metabolic and nitric oxide supplement
• Individuals wanting more energy, better workout performance, and faster recovery
• Anyone who wants to support their heart health and blood pressure naturally
• People looking to avoid caffeine or stimulant-based pre-workouts

Usage Recommendations

Take 4 capsules daily with water, preferably before your workout or physical activity. For best results, use consistently and pair with a healthy lifestyle.

Summary: Formulation Factory Heart of Steel stands out as an all-in-one nitric oxide and metabolic booster, supporting energy, endurance, heart health, and muscle recovery with a powerful blend of 10 clinically-studied ingredients. It’s a top pick for those who want results across performance, well-being, and cardiovascular support—all in one convenient, caffeine-free formula.

2. Best Nitric Oxide Supplement for Virility: VigRX Nitric Oxide Support

One of the effects of nitric oxide on the human body is that it helps rush the blood to your nether areas, which results in a firm erection. With age and other factors, the body becomes less efficient in performing this function naturally, giving rise to the need for supplements.

About VigRX Nitric Oxide Support

VigRX Nitric Oxide Support is a stimulant-free nitric oxide supplement that uses a unique blend named Volex.

Volex is a trademark of Kyowa Hakko, an international health ingredients manufacturer, which is a clinically studied blend of Kyowa’s L-Citrulline and Kyowa’s L-Arginine.

According to a citation on the VigRX Nitric Oxide website, the blend was tested during research at the Fukada clinic in Japan, which came out with the result that the blend was efficient by 40 percent than either L-Arginine alone, or L-Citrulline alone, in maintaining sexual stamina and erection.

Velox, the main ingredient of the supplement, is a patented, vegetarian, non-GMO blend that is made in the USA.

What it Contains:

Each serving (3 pills) of VigRX Nitric Oxide contains:

• Velox – L-citrulline & L-Arginine – 3 grams

Each bottle of VigRX Nitric Oxide contains 90 tablets or 30 servings of three tablets each. The container’s instruction says it is ideal for taking the dosage with water, on an empty stomach in the morning.

The company also offers a 67-day money-back guarantee if you don’t feel the desired result within this period.

The Pros:

• Uses the patented formula Velox
• Made in the USA
• Non-GMO and Vegetarian formula
• 67-days money-back guarantee

Summary: VigRX Nitric Oxide Support is a product aimed to address your sexual needs. It uses a patented formula designed by Kyowa Hakko, a leading Japanese firm of biotech. The product is ideal for those who are looking to restore their flagging sexual stamina as a result of dropping nitric oxide levels.

3. Best Value Nitric Oxide Supplement: Nutricost Nitric Oxide Booster

Price: $14.95

Nutricost Nitric Oxide Booster is a budget-friendly supplement designed to enhance blood flow, energy, and vascular health. With a potent blend of L-Arginine (500 mg), L-Arginine HCl (500 mg), Arginine AKG 2:1 (500 mg), L-Citrulline (375 mg), and L-Citrulline Malate 2:1 (375 mg) per serving, it supports better pumps and cardiovascular function. The formula is gluten-free, non-GMO, and produced in an NSF certified, GMP-compliant, and FDA-registered facility.

Key Benefits

• Boosts nitric oxide production for enhanced circulation and muscle pump
• Supports workout performance and recovery
• Helps maintain cardiovascular health and stable blood pressure
• Increases energy levels for daily activities and gym sessions
• Convenient capsule form and easy to digest

Key Ingredients

• L-Arginine (500 mg)
• L-Arginine HCl (500 mg)
• Arginine AKG 2:1 (500 mg)
• L-Citrulline (375 mg)
• L-Citrulline Malate 2:1 (375 mg)

Pros

✔ High dose per serving for noticeable results
✔ Excellent value – affordable price per capsule
✔ Gluten-free, non-GMO, soy-free
✔ Produced in an NSF, GMP, and FDA-registered facility
✔ Third-party tested for safety and purity
✔ Fast-acting, with many users feeling effects within 2 hours

Cons

❌ Some users may prefer a more diverse ingredient blend
❌ Capsule size is large; requires taking 3 capsules per serving
❌ A small number of users reported joint pain or stomach discomfort

Customer Feedback

• Effectiveness: The majority report a fast and strong pump effect, improved vascularity, and quicker recovery.
• Energy Level: Most users feel a clear boost in energy and endurance, often noticing results within hours.
• Value for Money: Many consider it “worth every penny” for the quantity and quality; praised for its affordability.
• Quality: Recognized as a reliable, high-quality supplement from a trusted brand.
• Nitric Oxide Booster: Users observe benefits in heart and vascular health, with some calling it the best NO booster they’ve used.
• Blood Pressure: Several reviewers noticed more stable blood pressure and improved blood flow.
• Taste/Ease of Use: Capsules are generally easy to swallow and have no strong taste.
• Feel Good: Most users feel better post-workout, though a minority mention mild joint pain or digestive issues.

Best Suited For

• Budget-conscious buyers seeking maximum value and effective NO support
• Athletes and gym-goers who want better pumps, energy, and performance
• Individuals looking to support vascular and cardiovascular health without breaking the bank
• Those preferring a simple, focused formula

Usage Recommendations

Take 3 capsules per day with water, ideally before workouts or as part of your daily supplement routine. Consistent use may provide the best results.

Summary: Nutricost Nitric Oxide Booster delivers high doses of arginine and citrulline for a fast, noticeable increase in energy, pump, and blood flow—all at a price that’s hard to beat. It’s a smart choice for anyone seeking a reliable and affordable nitric oxide supplement for workouts and heart health.

4. Best for Muscle Recovery Support: Primaforce Nitric Oxide Booster

Price: $13.99

Primaforce Nitric Oxide Booster provides a science-backed blend of L-Arginine, L-Arginine HCl, Arginine AKG 2:1, L-Citrulline, and L-Citrulline Malate 2:1, totaling 2,250 mg per serving. Designed to increase nitric oxide production, this supplement aims to enhance workout performance, boost muscle strength, and aid recovery. Each batch is made in an NSF-certified, GMP-compliant facility and independently third-party tested for purity and potency.

Key Benefits

• Supports nitric oxide production for better blood flow and nutrient delivery
• Promotes muscle recovery and repair after intense workouts
• Enhances energy, muscle strength, and workout performance
• Helps with maintaining strength throughout the day
• Convenient, cost-effective, and easy to use

Key Ingredients

• L-Arginine (500 mg)
• L-Arginine HCl (500 mg)
• Arginine AKG 2:1 (500 mg)
• L-Citrulline (375 mg)
• L-Citrulline Malate 2:1 (375 mg)

Pros

✔ Potent 2,250 mg formula per serving
✔ Manufactured in an NSF, GMP-compliant facility
✔ Third-party tested for purity and potency
✔ Designed for both pre- and post-workout support
✔ Affordable and offers solid value per serving
✔ May help promote natural HGH release during exercise

Cons

❌ Only 40 servings per bottle (3 capsules per serving)
❌ Mixed feedback on “pump” effects—some did not feel significant muscle pumps
❌ A few users reported negative effects like no pump or mild heart rate changes

Customer Feedback

• Effectiveness: Most users are satisfied with noticeable improvements in energy, workout performance, and muscle recovery.
• Muscle Strength/Recovery: Users highlight reduced soreness and better muscle repair, especially after intense exercise.
• Energy Level: Some report feeling full, energetic, and able to maintain strength during the day.
• Vitamin Content: Appreciated for its added vitamins and support for healthy eating habits.
• Pumping Ability: Mixed results—some experienced good pumps, while others did not notice any effect or reported heart rate sensitivity.

Best Suited For

• Individuals prioritizing muscle recovery and reduced soreness after workouts
• Those looking for a high-potency nitric oxide blend from a brand focused on purity and independent testing
• Athletes and gym-goers seeking support for muscle strength, repair, and endurance
• Budget-conscious users wanting a reputable, third-party tested product

Usage Recommendations

Take 3 capsules per serving, ideally before or after workouts, with water. Consistency is key for best results—combine with regular training and a balanced diet.

Summary: Primaforce Nitric Oxide Booster stands out for its muscle recovery support, third-party testing, and potent ingredient blend. It’s a great fit for those looking to optimize workout recovery and maintain strength throughout the day.

5. Best for Blood Flow and Vascularity: Nutrex Research NIOX Extreme Pumps

Price: $28.48

NIOX Extreme Pumps by Nutrex Research is a nitric oxide supplement formulated to enhance muscle pumps, blood flow, and endurance during workouts. Designed for serious athletes and fitness enthusiasts, this product features a unique blend of arginine nitrate (NO3-T), AstraGin, and Vitamin C to support improved vascularity and workout performance.

Key Benefits

• Promotes enhanced blood flow and vascularity during workouts
• Supports muscle pump and oxygen delivery
• Increases endurance and helps elevate workout intensity
• Includes AstraGin for better nutrient absorption
• Formulated to deliver boundless energy for gym sessions

Key Ingredients

• Arginine Nitrate (NO3-T): 2,000 mg per serving (3 capsules)
• Vitamin C (as PureWay-C): 100 mg per serving
• AstraGin (Astragalus membranaceus root & Panax notoginseng root extract): 25 mg per serving

Other ingredients: Glycerin, vegetable capsule, purified water, chlorophyllin.

Pros

• Multi-pathway nitric oxide support for optimal muscle pumps
• Includes AstraGin for enhanced absorption
• Easy-to-swallow veggie capsules
• No artificial fillers; made in the USA

Cons

• Higher price per serving compared to some competitors
• Some users may not experience a strong pump effect
• Contains a proprietary blend, not all ingredient amounts specified

Customer Feedback

• Effectiveness: Users consistently report improved blood flow and solid results, with one noting it works well when stacked with other supplements.
• Energy Level: Customers say the product provides boundless energy for intense gym sessions and helps elevate their fitness game.
• Blood Flow: Multiple reviewers mention noticeable improvements in muscle pump and vascularity, with AstraGin specifically called out for enhancing blood flow.
• Taste/Ease of Use: Capsules are easy to take, and the product is convenient for daily use.
• Side Effects: Few reports of negative effects, though a minority did not experience a significant pump.

Highlighted Ingredients

• Arginine Nitrate (NO3-T): 2,000 mg (nitric oxide support)
• Vitamin C (PureWay-C): 100 mg (antioxidant and immune support)
• AstraGin: 25 mg (improves nutrient absorption)

Best Suited For

Ideal for athletes and fitness enthusiasts looking to maximize muscle pump, vascularity, and workout endurance. Especially beneficial for those seeking a stimulant-free pre-workout boost.

Usage Recommendations

Take 3 capsules daily, preferably before exercise. For optimal results, use consistently and combine with regular strength or endurance training.

Summary: NIOX Extreme Pumps stands out for its robust nitric oxide support, helping users achieve enhanced muscle pumps, better vascularity, and lasting workout endurance. Its formula is enriched with AstraGin for absorption and PureWay-C for antioxidant support, making it a strong choice for those who want maximum blood flow without stimulants

6. Best High Potency & Versatile Formula: Deal Supplement Nitric Oxide Booster 3,000mg

Price: $19.99

Deal Supplement Nitric Oxide Booster offers a 12-in-1 complex with a high 3,000mg equivalent dose per serving. This product is designed for adults seeking to boost energy, improve workout performance, and support overall cardiovascular and circulatory health. The formula is gluten-free, GMO-free, lab-tested, and comes in a large 300-capsule bottle for extended use.

Key Benefits

• Supports increased blood flow and better circulation
• Helps lower and stabilize blood pressure
• Boosts energy and stamina for workouts and daily activities
• Aids muscle pumps and nutrient delivery
• Contains botanicals for additional health support

Key Ingredients

• Arginine Complex (800mg/serving): L-Arginine (base), L-Arginine HCl, Arginine AKG 2:1, Arginine Pyroglutamate, Arginine Malate, Arginine Aspartate
• Citrulline Complex (400mg/serving): L-Citrulline, L-Citrulline Malate 2:1
• Proprietary Energy Blend (1,800mg/serving): Korean Red Ginseng, Tongkat Ali, Maca, Marshmallow Root

Pros

• High potency per serving (3,000mg)
• Comprehensive blend: amino acids + adaptogens + energy botanicals
• 300 capsules per bottle—excellent value for long-term use
• Easy to swallow, tasteless, no aftertaste
• Lab-tested, GMO-free, gluten-free

Cons

• High serving size (3 capsules per dose) may be inconvenient for some
• Contains a proprietary blend (not all ingredient doses are fully disclosed)
• Not suitable for those allergic to any included botanicals or gelatin capsules

Customer Feedback

• Effectiveness: Most users report higher potency than other brands, with noticeable improvements in blood flow, muscle pumps, and overall energy.
• Blood Pressure: Many users note lower or more stable blood pressure and improved circulation.
• Energy Level: Customers praise the energy boost and reduction in workout fatigue; some mention increased stamina for daily life.
• Value for Money: Widely viewed as a great deal for the price, especially considering the capsule count and effects.
• Ease of Swallow: Capsules are described as easy to take, tasteless, and manageable.
• Blood Flow: Users note “insane pumps” and better vascularity in the gym; others cite relaxed blood vessels for better health.
• Taste: No aftertaste, easy to add to a supplement routine.
• Beet Root Content: Appreciated for natural ingredients, no “funky beet burps.”

Best Suited For

• Fitness enthusiasts and athletes seeking enhanced muscle pumps and stamina
• Individuals with high blood pressure or those needing better circulation
• Anyone wanting a daily nitric oxide booster with adaptogenic and botanical support
• Those seeking a budget-friendly, long-lasting supplement

Usage Recommendations

• Take 3 capsules per serving (up to 100 servings per bottle)
• For optimal results, use daily with water—ideally 30-60 minutes before workouts or as part of your morning routine
• Can be taken on non-training days for cardiovascular support
• Consult a healthcare professional before use, especially if you are pregnant, nursing, or on medication

Summary: Deal Supplement Nitric Oxide Booster stands out with its high-potency, comprehensive formula and exceptional value. Customers report powerful pumps, improved blood pressure, and boosted energy—all in a tasteless, easy-to-swallow capsule. A strong contender for anyone looking to maximize blood flow and performance, both in and out of the gym.

7. Best Overall: Double Wood Nitric Oxide Booster

Double Wood’s Nitric Oxide Booster is designed to enhance blood flow, muscle pumps, and athletic performance. It contains a clinically studied 500 mg of Nitrosigine, combined with L-Citrulline, Arginine AKG, and L-Arginine HCl, all of which work synergistically to promote nitric oxide production. This supplement is stimulant-free, making it a great option for those who want a pre-workout boost without caffeine-related side effects.

Benefits:

• Enhances nitric oxide production to support blood circulation and muscle pumps
• Improves workout performance by increasing endurance and reducing muscle soreness
• Stim-free formula suitable for people avoiding caffeine-based pre-workouts
• Supports cardiovascular health by improving blood vessel function

What it Contains:

• 500 mg Nitrosigine (Arginine Silicate Inositol Complex) – A clinically backed nitric oxide booster
• 500 mg L-Citrulline – A precursor to nitric oxide, helping improve circulation
• 250 mg Arginine AKG 2:1 – A form of arginine that enhances blood flow and oxygen delivery
• 250 mg L-Arginine HCl – Supports nitric oxide synthesis and cardiovascular health

Pros:

✔ Clinically studied Nitrosigine formula for enhanced blood flow
✔ Caffeine-free – no jitters or crashes
✔ Vegetarian, Non-GMO, and gluten-free
✔ Third-party tested for purity and potency
✔ Manufactured in the USA with globally sourced ingredients

Cons:

❌ Some users may prefer higher doses of L-Citrulline for better performance
❌ Might not work as effectively for individuals with low nitric oxide response

Customer Feedback:

Mild results for some – A few users mentioned that the effect wasn’t as strong as beetroot-based nitric oxide boosters.

Improved blood flow and muscle pump – Many users noticed increased vascularity and stronger muscle pumps during workouts.

Energy boost without caffeine – Users appreciated the non-stimulant formula, stating that it provided energy without the jittery effects of pre-workouts.

Good value for money – Customers found it effective and well-priced compared to competitors.

Summary: Double Wood’s Nitric Oxide Booster is a stim-free pre-workout supplement designed to enhance circulation, muscle pumps, and performance. With 500 mg of Nitrosigine plus L-Citrulline and Arginine, it effectively supports blood flow and cardiovascular health. Ideal for those looking for a clean, caffeine-free nitric oxide enhancer.

8. Best Gluten-Free Nitric Oxide Supplement: BulkSupplements AAKG

Most health-conscious consumers prefer supplements without artificial sweeteners and flavors. Very few manufacturers provide clean, pure, and quality supplements to their customers’ liking, but BulkSupplements is one of the best-known names in this category.

About BulkSupplements AAKG (L-Arginine Alpha-Ketoglutarate)

AAKG is a compound of L-Arginine and Arginine Alpha-Ketoglutarate and is known to increase the production of nitric oxide in your body more than L-Arginine alone. BulkSupplement’s AAKG is popular with bodybuilders owing to its claim of increasing muscle mass, improving energy, and boosting performance by increasing nitric oxide levels.

Available in the powder form, the supplement contains only AAKG and is free from added sugar, additives, flavors, gluten, yeast, dairy, and soy.

In addition to being third-party tested and lab-verified, all BulkSupplement products are made in the USA, in an FDA-approved facility following the cGMP guidelines.

What it Contains:

Each serving (2600 mg) of L-Arginine Alpha-Ketoglutarate AAKG BulkSupplements contains the following:

• L-Arginine – 1768 mg
• Alpha-Ketoglutarate – 702 mg

The supplement is available in packs of 100 gms, 250 gms, 500 gms, 1 kg, 5 kg, and 25 kg. One 100 gm container of BulkSupplements AAKG includes 38 servings of 2600 mg (or one teaspoon) each.

BulkSupplements recommends taking up to three such servings in a day on an empty stomach for best results.

You can usually avail discount offers on subscribing to the product for recurring deliveries.

The Pros:

• Gluten-free
• Clean and pure formula
• Free of sugar, soy, and other additives
• Made in the USA

Summary: BulkSupplements is one of the most recognized brands in the world of health supplements, and is known for quality products. BulkSupplements AAKG (L-Arginine Alpha-Ketoglutarate) is a clean, raw, and gluten-free nitric oxide supplement, which helps the body during workout and bodybuilding sessions.

9. Best Nitric Oxide Pills: UMZU Redwood Nitric Oxide Supplement

UMZU Redwood Nitric Oxide Supplement is designed to support healthy blood flow and circulation. Formulated with natural ingredients like vitamins, garlic, and L-Leucine, it offers a holistic approach to improving stamina, energy, and immunity. It’s a vegan alternative to traditional supplements for nitric oxide support.

Benefits

• Enhances blood circulation for improved oxygen delivery.

• Boosts stamina and energy levels throughout the day.

• Supports immune health with ingredients like Vitamin C and garlic.

• Promotes better recovery and overall well-being.

What it Contains

The supplement includes Vitamin C, garlic root powder, horse chestnut seed extract, maritime pine bark extract, L-Leucine, and lactotripeptide (VasoDrive-AP®). These ingredients work synergistically to enhance blood flow, energy, and immune function.

Pros

• Vegan-friendly and easy to consume.

• Natural ingredients support multiple health benefits.

• Helps improve energy and endurance.

Cons

• Some customers mention the price being a bit high.

• A few reviews indicated minor side effects like digestive discomfort.

Customer Feedback

Most customers are satisfied with the effectiveness of the product, noting that it increases energy, improves blood circulation, and supports stamina. However, some users experienced side effects and felt that the price was on the higher side compared to similar supplements.

Summary: UMZU Redwood provides a natural, vegan-friendly boost to your energy, circulation, and overall health. With its carefully chosen ingredients, it’s a solid option for those looking for enhanced stamina and immunity support, although the price might be a consideration for some.

10. Best Nitric Oxide Powder: Old School Vintage Blast Pre-workout

Vintage Blast is one of the best nitric oxide supplements in the powder category. It’s a pre-workout mix that is designed to work in two stages, delivering two different sets of nutrients to the body to render you optimally charged during your workouts. The deferred delivery is designed based on the digestive and assimilative properties of different nutrients.

About Old School Vintage Blast Pre-Workout

Old School is a California-based food supplement firm and Vintage Blast is one of its most popular products. Vintage Blast consists of six different types of amino acids, four different types of B vitamins, vitamin C, and other minerals to boost your metabolism and the production of nitric oxide in your body.

The supplement has no artificial sweeteners and is sweetened using stevia. The nitric oxide powder is vegetarian and suitable for those following the keto diet as well. Furthermore, it has no dairy, gluten, and is also GMO-free.

What it Contains:

Each serving (one scoop or 15.3 gm) of Old School Vintage Blast Pre-workout contains:

Stage 1 Group: Start Strong

• L-Citrulline Malate – 5000 mg
• Beta-Alanine – 1000 mg
• L-Arginine AKG – 1000 mg
• L-Carnitine Tartrate – 250 gm
• Caffeine Anhydrous – 150 mg

Stage 2 Group: Finish Strong

• D-Aspartic Acid – 2000 mg
• N-Acetyl L-Tyrosine – 250 mg
• Microencapsulate Caffeine – 100 mg

Other ingredients include B vitamins, stevia leaf extract for sweetness, pineapple fruit powder, and natural fruit and vegetable juice. This product is available in the blueberry lemonade flavor.

Each container of Old School Vintage Blast contains 306 gm of supplement powder and includes 20 servings of 15.3 grams each. It is recommended to take a serving by mixing it with water, 15-30 minutes before the workout.

The Pros:

• Non-GMO and Gluten-free
• Suitable for vegetarians and keto-friendly 
• No artificial sweeteners 
• Two-part delivery of nutrients in the body for sustained results

Summary: Old School is one of the more trusted names in the market. Its Vintage Blast is unique in that it imparts the nutrients value in a graded manner for a long and sustained energy boost, which lasts the entire period of your workout. The fact that it contains no added sweeteners and is suitable for vegetarians makes it all the more appealing.

11. Best Nitric Oxide Supplement With Beetroot: Havasu Nutrition L-Arginine Nitric Oxide Booster

The world of health supplements is rife with products that deliver temporary results and fail to offer sustained benefits. This is usually due to substandard ingredients or quality. It is hence important to look for non-habit forming natural products that deliver long-term sustainable results.

About Havasu Nutrition L-Arginine Nitric Oxide Booster

Havasu Nutrition is a US-based health supplements firm known for products made from natural sources. The firm boasts of manufacturing all its products at an FDA-approved facility that is certified with Good Manufacturing Practices (GMP).

Havasu Nutrition L-Arginine Extra Strength is a non-GMO blend of amino acids and beetroot extracts that claims to increase the production of nitric oxide in your body. Ideal for both men and women, this product is perfect for anyone who wants to give their workout a boost.

What it Contains:

Each serving (2 capsules) of Havasu Nutrition L-Arginine Extra Strength contains:

• L-Arginine HCL – 400 mg
• AAKG (L-Arginine Alpha-Ketoglutarate) — 400 mg
• L-Citrulline Malate – 400 mg
• Beetroot powder (Beta Vulgaris) – 100 mg

Each bottle of Havasa Nutrition contains 60 capsules constituting 30 servings. It is recommended that you take each serving of two capsules right before your workout for maximum results. Also, there is a 60-day money-back guarantee if you are not satisfied with the results.

The Pros:

• 60 days money-back guarantee
• Beetroot powder for increase blood pressure
• Made in the USA 
• Non-GMO

Summary: Havasu Nutrition L-Arginine Extra Strength is an ideal product for both men and women with a limited budget to spend on food supplements. The product is one of the best nitric oxide supplements with beetroot. You can easily make this a part of your health and workout regimen.

The Dosage Instructions for Nitric Oxide Supplements

We’ve seen that nitric oxide supplements are available as capsules, pills, and in the form of powder. No specific studies have been undertaken to establish the daily requirement of L-arginine and L-citrulline.

However, some sources say that 5 grams of L-arginine is consumed daily through diet and is converted to nitric oxide and is used by the body for different functions (6).

When taken in appropriate limits, nitric oxide hasn’t shown any significant side effects (7, 8).

But, remember, since these supplements have not been proven to treat any medical conditions nor regulated by the FDA, they should be taken under expert guidance to avoid any severe health complications.

As far as the manufacturers are concerned, they usually suggest higher doses of their supplements for maximum benefit. Depending on whether it is in the form of tablets or powder, you can be required to take 2-3 servings each day. Most manufacturers recommend taking the supplement before the workout for the best results.

Please note that your nitric oxide levels can also increase by the intake of nitrate-rich foods, like beetroot, garlic, green leafy vegetables, broccoli, cauliflower, oranges, bananas, etc. Legumes, dairy products, meat, and poultry also help achieve optimal levels of the amino acids that produce nitric oxide in the body (9, 10, 11, 12, 13).

So, please be careful of your diet while taking nitric oxide supplements.

Summary: While there are no definitive studies that have helped set the daily intake value of nitric oxide, it is best to take it in moderation, as per the manufacturer’s suggestion. It would be best to set the dosage and discuss any change in it, with your physician. Also, remember to take into account all the natural sources of nitric oxide in your diet.

The Side Effects of Nitric Oxide Supplements

Nitric oxide supplements are generally not known to cause any severe adverse effects. However, some mild side effects may include the following:

• Diarrhea
• Nausea
• Heart Palpitations
• Bloating etc.

Similarly, nitric oxide supplements are not recommended for people who have allergies or asthma, cirrhosis, or had heart attacks in the past (14).

Those with the rare genetic disorder known as Guanidinoacetate methyltransferase should also not use the nitric oxide supplements owing to their body’s inability to convert arginine into creatine.

The supplements may also interfere with existing medication, so be sure to check with your doctor before taking the supplement.

There are isolated cases of more severe side effects, some of which also resulted in increased chances of death after undergoing heart surgery (15).

Summary: Though the consumption of nitric oxide supplements is considered safe with no significant side effects, those with underlying health conditions should avoid using these supplements. There is clearly a greater need for detailed studies examining the side effects of these supplements to help administer more accurate dosages.

Frequently Asked Questions (FAQs)

The Final Note

Nitric oxide supplements are gaining popularity owing to their many perceived health benefits.

Although they do not have serious side effects, they could pose problems for people with underlying health conditions of heart, kidneys, etc.

With so many products easily available, it is recommended that you conduct a detailed research about the ingredients before choosing the right supplement for you. 

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