L-arginine Supplements


L-arginine is an amino acid that offers multiple benefits. Since your body can create it, it’s a non-essential amino acid but very important. Besides being used in many treatments, L-arginine can be helpful for athletes and bodybuilding enthusiasts.

While you can get a daily supply of L-arginine from your diet, you require supplements if you want to enhance your physical performance and gain muscle mass.

You will come across many products from different brands, so you have several choices. However, not all are the same in providing the benefits. Often, people make wrong choices, and they don’t see any improvements.

Don’t worry, though, because we have selected the best L-arginine supplements available right now. Take a look below and make your selection.

L-arginine Supplements

Best L-arginine Supplements


#1 L-Arginine Extra Strength Nitric Oxide Booster-HAVASU NUTRITION

The first supplement on the list is from Havasu Nutrition, called L-arginine extra strength Nitric Oxide Booster. It’s in capsule form and unflavored. The supplement contains only natural ingredients and is manufactured in a GMP-certified facility.

Havasu’s L-arginine is free from GMO, gluten, artificial coloring & flavor and preservatives. It’s vegetarian friendly and also cruelty-free. So you don’t have to worry about any of these aspects.

The main ingredients in the supplement are L-arginine HCL, L Citrulline, Beet Root Powder and AAKG.

This NO Booster improves blood flow and enables you to build and repair muscles faster when you train regularly. It will also enhance your physical performance, endurance level and vascular growth.

Due to better blood flow and circulation, your sexual health will also improve, as can be seen from customers’ reviews.


L-Arginine Extra Strength Nitric Oxide Booster-HAVASU NUTRITION





Pros and Cons of L-arginine Extra Strength


  • Improves blood flow
  • Helps build muscle mass
  • Contains natural ingredients
  • Enhance sexual health
  • Protects heart health
  • Lowers muscle fatigue and helps recover fast


  • Results are not the same for everyone

Do not take the supplement if you are below 18 years of age or are sick and taking medication. Also, avoid it if you are breastfeeding or pregnant at the moment.





#2 L-Arginine Pharmaceutical Grade-Best Naturals

Best Naturals’ L-arginine Pharmaceutical Grade supplement is also a safe and high-quality product available right now. It’s unflavored and in tablet form and made in a GMP-certified facility.

The supplement has only natural substances and is formulated by experts, including doctors, pharmacists, and scientists. So, it’s not a randomly concocted product.

Best Naturals’ L-arginine may boost the immune system and heart function. It may also accelerate the healing process of the bones and other wounds.

The supplement may also stimulate white cells production by activating the thymus gland.

The supplement also supports muscle growth and blood circulation. L-arginine releases Nitric Oxide, which is responsible for widening blood vessels and allowing unrestricted blood flow throughout the body.


L-Arginine Pharmaceutical Grade-Best Naturals





Pros and Cons of Best Naturals’ L-arginine


  • Boosts immunity
  • Improves vascular health
  • May hasten healing and recovery process
  • May activate thymus gland and increase white blood cells production


  • Some individuals may get side effects
  • Some users also fin the tablets a little big to consume

Though the product is safe, you mustn’t use it if you are under 18 or under any medical treatment. It’s also best to avoid it if you happen to be nursing or are pregnant.





#3 Double Strength L-Arginine Nitric Oxide Precursor-NOW

NOW’s Double Strength L-arginine is a GMO-free, soy-free and kosher supplement in tablet form. It’s a doctor-formulated, lab-tested product developed in a GMP-certified facility. So, you have a high-quality product that offers multiple benefits.

L-arginine releases Nitric Oxide, which enlarges blood vessels and enables smooth blood flow. Once blood circulation is improved, various bodily functions become enhanced too.

This supplement helps boost blood circulation, increase energy and strength, helps in weight management and improves sexual drive. It also lowers and maintains blood pressure.

Due to better blood supply, athletes and bodybuilders may also notice muscle gain with regular use.

Follow recommended dosage and instructions for best results and safety. People with any medical condition must seek a doctor’s advice before using this product.


Double Strength L-Arginine Nitric Oxide Precursor-NOW





Pros and Cons of NOW’s Double Strength L-arginine


  • Improves blood flow
  • Helps in weight loss
  • Enhance sexual drive
  • Boost energy and strength


  • Suitable only for healthy adults

Avoid the product if you are ill, under 18, pregnant and breastfeeding.




#4 L-Arginine 1000mg-NATURE’S BOUNTY

The next product on the list is L-arginine 1000mg from Nature’s Bounty. It’s also a popular supplement with many people providing positive feedback. The product is manufactured in a recognized facility, and so you don’t have to worry about the quality.

L-arginine 1000mg performs several functions. It supports Nitric Oxide synthesis (NOS). It improves blood flow and circulation. It also protects the heart and improves its functions.

The supplement also acts as a protein-building block. It also lowers and maintains blood pressure and boosts sexual health in men.

The supplement also increases endurance power and gives bursts of energy, which can be quite beneficial for athletes and bodybuilders.


L-Arginine 1000mg-NATURE’S BOUNTY





Pros and Cons of L-arginine 1000mg


  • Supports Nitric Oxide Synthesis
  • Protects heart health
  • Improves blood circulation
  • May boost sexual health


  • The pills may be a bit large for some users

Take the supplement only if you are healthy and above 18 years of age. If you are a nursing woman or pregnant or taking any medication for an illness, do not take it.




#5 Arginine Plus-DR EMIL NUTRITION

The last supplement on the list is Arginine Plus – L-Arginine + L-Citrulline from Dr Emil Nutrition, and it has several functions. The combination of the two amino acids makes the product even more potent.

The supplement contains only natural ingredients and is free of GMO, additives and hormones. It’s also manufactured in a GMP-certified facility, so there is no compromise to the quality.

The product increases Nitric Oxide, and it improves blood flow, and as a result, the body’s various systems function smoothly. Regular use of Arginine Plus enhances energy levels and endurance power.

It also protects heart health and enables it to function properly. It is also likely to enhance sexual health in men and allow them to perform better in that department.

Healthy adults can use the supplement by following the correct dosage at all times. If you have any underlying condition and take medicines, consult your physician. Pregnant and breastfeeding women shouldn’t use the supplement too.







Pros and Cons of Arginine Plus


  • Improves blood flow
  • Boosts energy and endurance levels
  • May enhance sexual performance (1)
  • Made with only natural items


  • Suitable for only healthy and adult individuals
  • Some users consider the pills to be too big to consume



All the products mentioned above have received positive responses from customers. They offer many benefits.

If you follow the proper dosage, eat a good diet and exercise, you will have great results and stay healthy.

Check out the supplements online and start a course to enjoy their benefits.


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I've been a bodybuilder and fitness enthusiast for over 15 years. I'm also a Karate black belt and personal trainer with a PHD in sports nutrition.