Nitro XL
  • Editor Rating
  • Rated 2.5 stars
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  • Nitro XL
  • Reviewed by:
  • Published on:
  • Last modified: September 28, 2016
  • Overall
    Editor: 48%
  • Effectiveness
    Editor: 51%
  • Speed of Results
    Editor: 49%
  • Sustaining Results
    Editor: 52%
  • Safety
    Editor: 53%
  • Value
    Editor: 49%

What Is Nitro XL?

Nitro XL is a naturally-derived, pre-workout supplement that comes in convenient capsule form. A typical month long supply includes 120 capsules, containing a propriety blend of ingredients intended to stimulate receptors within the body designed to naturally produce Nitric Oxide. With regular usage, the results of this include strong, healthy muscles that can be developed in a far briefer time than would be possible without supplementation. Of course, it is ideally used in conjunction with a healthy diet and regular bodybuilding routine.

By increasing a naturally occurring gas found within the human body known as Nitric Oxide, Nitro XL improves strength, blood flow, oxygen, and general muscle health. As a pre-workout supplement this helps to develop a strong foundation on which to build healthy, resilient muscles. Improved health and condition of muscles generally leads to faster recovery time and less incidence of injury.

Even with proper nutrition and regular exercise, many bodybuilders find that they are not able to get the results they want within the time they desire. The addition of a pre-workout supplement such as Nitro XL helps to provide an extra boost to one’s regimen, making strength training goals more attainable. Users simply take two pills twice a day with a meal to increase the impact of their workouts and decrease the time needed between workouts for proper, safe recovery.



Despite being a relatively new company, the manufacturer of this product, Nitro XL, offers a safe and secure experience for consumers interested in purchasing high quality supplements via the Internet. Capsules are manufactured in a clean, up-to-date laboratory and have undergone several rigorous tests to ensure safety and compliance. Nitro XL prides itself on providing a top-notch supplement containing only the highest quality and safest ingredients.

If at any point a consumer is not satisfied with the product, labeling, or packaging they are encouraged to contact customer service anytime Monday through Friday from 9:00 AM to 5:30 PM, EST. Consumers may also opt to send an email to the manufacturer with questions or concerns for a member of the customer service team to respond to as soon as possible. The company appears willing and able to assist with any issues that may occur.

Of course, it is important to always follow manufacturer guidelines regarding dosage. This helps to ensure safety and reliable results. Consumers who follow all guidelines and still do not experience a change are encouraged throughout the company’s site to return the product as part of the manufacturer’s money-back-guarantee policy.


How Nitro XL Works?

Nitro XL utilizes a blend of L-Glutamine AKG, L-Arginine Alpha Ketoglutarate, L-Ornithine AKG, and Arginine Ketoisocaproate to increase the amount of Nitric Oxide within the body prior to working out. The increase in strength and energy should become apparent to most users immediately. Increase in stamina during workouts is a result of improved blood flow and oxygen to the muscles, which in turn has a positive effect on the body and makes lifting easier.

Benefits of the product are two-fold. Not only are workouts easier, but after workouts that are supplemented with Nitro XL, the increase in blood flow helps to improve recovery speed. This decreases the amount of downtime required between workouts. What this means is fewer aches and pains and better resilience, offering a huge advantage to bodybuilders hoping to get ahead of the competition. As a result of regular usage, bodybuilders are able to get back in the gym faster, leading to quicker results.

Although this is not considered a weight loss product, users typically respond with increased fat-burning speed. This is a natural result of increased muscle strength and durability and a huge part of what makes strength training so valuable. Consumers who are looking to lose weight and build muscle should find themselves experiencing both benefits within a short amount of time with regular, recommended use.


Ingredients of Nitro XL

Nitro XL contains L-Glutamine AKG, L-Arginine Alpha Ketoglutarate, L-Ornithine AKG, and Arginine Ketoisocaproate. These three ingredients are popular, all natural supplements that work together to increase the body’s product of Nitric Oxide in one way or another. In return, the body reacts by building stronger, healthier muscles in a short amount of time.

L-Arginine Alpha Ketoglutarate is an amino acid that increases the body’s natural production of Nitric Oxide. In turn muscles within the body receive more oxygen, which improves stamina and overall strength. L-Ornithine AKG helps the body to breakdown carbs at a more efficient rate, leading to improved energy. These ingredients help with the “during” part of strength training to make for a better workout.

Following a workout, Arginine Ketoisocaproate sends a message to the body to increase muscle growth and recovery. L-Glutamine AKG promotes quick healing following workouts to allow for faster recovery and development. Together these two ingredients increase the recovery element of strength training, decrease injury, and help to get the bodybuilder back in the gym sooner.



Nitro XL offers several advantages for individuals who are interested in improving endurance, strength, and resilience during training. With proper usage, bodybuilders find that they are able to get long-term results in an abbreviated amount of time. This offers a huge advantage, as it is often the boost needed to get over a plateau and start to experience real results. It can also be of huge benefit to new bodybuilders who desire quick changes.

The improved stamina and energy created by increased Nitric Oxide within the body, makes workouts easier to manage and complete. This not only makes training less of a chore, but helps to keep new bodybuilders interested and motivated to come back for more. Highly motivational, visible results appear sooner, a huge factor to keeping anyone working out for the long-term.

The other advantages to taking Nitro XL are found in the after-effects. Increased resilience and lower recovery time means that users find themselves able to get back into the gym sooner. Users also experience less discomfort and minor injury following hard workouts, making them more likely to return.



Ingredients contained within the product have been certified safe through unbiased, independent lab testing. They are free of adulterants and provide scientifically proven changes within the human body when used in compliance with dosage regulations. Though the FDA does not approve supplements of this nature, the product is rigorously tested.

Consumers can rest assured that the product is safe to use in moderation by adult male bodybuilders. Children should not use Nitro XL under any circumstances as it is a product intended for individuals over the age of 18. Exceeding recommended dosage is also not recommended, as this may lead to unwanted side effects. Any unwanted side effects should be reported to both the manufacturer and the user’s physician immediately.

Users with questions about safety certificates should contact customer service during regular business hours. Nitro XL is a widely used and highly popular product. As with any supplement or workout routine, it is important to discuss usage with one’s personal physician.



It was easy to take with no noticeable side effects. Through the use of Nitro as a pre-workout supplement, I felt better during a workout and found it easier to lift harder and heavier weights. Following workouts I was not as tired and I did not suffer as many aches and pains. Overall I have been very pleased with my experience and plan to continue taking Nitro XL and recommend it to friends. In fact, I plan to purchase enough product to last six months next time around.

– Thomas S., Foley, Alabama, US

Though I found taking four capsules a day a little excessive, the product worked well to improve my workouts. I felt better after my workouts. I was less fatigued, which made it easier to manage my day as I typically hit the gym early in the morning before worked. The visible changes I experienced while taking it motivated me to keep hitting the gym and stick with it. I am now stronger and leaner than I have been in years and I plan to continue using this supplement for the long-term.

– Marcus L., Irvine, California, US

A friend recommended that I take a pre-workout supplement when I started bodybuilding earlier this year. I decided to use Nitro XL after reading several reviews on the Internet. I am happy with my choice so far. I feel like I am gaining muscle and burning fat at a faster rate than I would without it. The price is a little steep, but the benefits are extraordinary. I highly recommend it for anyone who needs a boost to their bodybuilding routine.

– Leslie M., Grapevine, Texas, US

As someone who has been bodybuilding for more than fifteen years I have tried a multitude of products, many of which come and go. I feel that this particular product really helped me to get over a recent plateau and helped boost my energy. I especially appreciate the fact that it does not utilize caffeine as part of its boost, as I am highly sensitive to caffeine and typically avoid it. I plan to continue using this supplement prior to workouts and recommending it to friends who are seeking a little extra boost to their workout.

– Martin J., Chicago, Illinois, US

I decided to try this product after reading several reviews online. I have been looking for a good, safe supplement that will help me lose weight and gain muscle quickly. I decided to go with Nitro XL and have been using it for about two weeks. I can already see results in the mirror and I feel that it is greatly improved how I workout and how I feel after a workout. I am excited to see what my results are at the end of the month and as of now I plan to continue using this product for the long term.

– Kelly S., Hollywood, Florida, US


Awards & Media Coverage

Nitro XL is relatively new to the supplement world and therefore has only recently began to appear in the media. It has, however, been reviewed by several reputable media sources including Men’s Fitness, Muscle and Fitness, Men’s Health, and Maxim. Reviews can also be found across the web from various bloggers and health enthusiasts.

Many award-winning bodybuilders have used the product and report good results. Word-of-mouth has always been the best way to spread the news about new products and keep them in the public eye and reviews for this product can be found in nearly every corner of the web. So though it may not be appearing in magazines and traditional news reports just yet, Nitro XL has developed a buzz among bodybuilders.

Despite being a fairly new product, coverage of the product has already exceeded expectations. As more bodybuilders try this product, consumers can expect to see awards and increased coverage. For the time being, the best accolades can be gathered from personal trial and online reviews.


Money-back Guarantee

If a consumer uses the product and does not see a difference, Nitro XL comes with a money-back guarantee under certain guidelines. In order to get their money back, the consumer must contact the retailer within 30 days to let them know that the product did not meet their expectations. If more than one bottle of Nitro XL was ordered, the consumer must return all the subsequent bottles unopened.

Consumers will receive a return merchandise number or RMA when they contact the company to make a return. It is the consumer’s responsibility to insure that the product is postmarked and shipped back within 30 days of their original order date. The cost of the product will be refunded to the customer’s original payment method. For example, if a consumer used a credit card for their purchase, the same card will be credited the refund amount within approximately two weeks.

This 30 day trial does not include the cost of shipping and handling. If the product was initially shipped for free, the cost of shipping will be deducted from the customer’s refund and any shipping paid will not be refunded. Products returned without following proper protocol will not be eligible for the money-back guarantee. Nitro XL will not accept anything sent back as “return to sender”.



Nitro XL is shipped through the United States Postal Service. Typically it takes anywhere from 2 to 15 days for shipments to arrive, depending on the level of priority shipping selected by the consumer and their location. A confirmation number is provided with all purchases so that customers can track their shipment from the day it is sent to the day it arrives and call customer service if any issues may arise.

At times free shipping may be offered as an incentive for new customers. However, the cost of shipping will be deducted in the even the product is returned as part of the money-back guarantee offer. Products ordered during a business day will be shipped out with 24-hours of payment.

Consumers outside of the continental United States may experience a slightly longer shipping period. Remember that inclement weather and other events outside of the control of the manufacturer may effect shipping. So consumers should keep up with their tracking number and purchase confirmation. If product has not arrived in the expected amount of time, consumers should contact customer service.


Customer Support

Customer support is extremely important to the manufacturer of this product. Support personnel are available to answer questions through email or phone. Hours of operation are 9:00 AM to 5:30 PM, EST.

During non-business hours, customers are encouraged to send emails. Customers may also find the answers the many of their questions by reviewing the FAQ on the company’s website. Testimonials and ingredient information may also be found on the company’s website 24 hours a day, 7 days per week.

In order to keep business lines open, consumers should utilize email communication for non-emergency questions or concerns. Emails typically receive a response within 24 hours.
The manufacturers take customer service very seriously and are always happy to answer any questions and concerns.


Safe & Secure Checkout

Checkout is safe and secure thanks to SSL certification. Secure 256 point site encryption makes consumer information unreadable to outsiders. Shoppers can rest assured that Information is not shared with third-party companies. However, consumers who are still concerned with online purchase safety may use the option of contact the company via phone to place an order.

Currently accepted forms of payment include Visa, MasterCard, Discover, American Express, and most major debit cards. Consumers may purchase online or through the company’s toll-free number. Any issues with online purchasing can be addressed through customer service.

Following checkout, it is important to keep up with one’s confirmation number in case any questions arise later. Refunds are sent back to the card used for purchase on the 1st and 15th of every month so it may take up to two weeks for a refund to be processed.


Pricing & Free Trial

Currently there is no free-trial offer available from the manufacturer of this product. However, customers who make a purchase and do not experience positive results are able to get their money refunded within two weeks, as long as they contact the company for a return merchandise number and send back any unused product within 30 days of purchase. The base cost of Nitro XL is $94.95 for 120 capsules, approximately a one-month supply.

The more of this product purchased at once, the lower the price. For example, a three month supply can be purchased at a 15% discount. Additionally, if a consumer purchases four months’ worth of this product, they receive two additional months for free. This makes the six month supply option the best deal overall at a price of $379.95.

Shipping fees are added at checkout and vary based on location and priority. Customers can expect to get their product in as little as two days. Tracking numbers are provided so that consumers can see when their product is shipped and how far it is from final destination at any time following departure from the warehouse.


  • The product is available in mess-free capsule form that is easy to carry around in one’s gym bag.
  • Consumers who take the recommended dosage should experience increased muscle strength and faster recovery time, making bodybuilding easier and more beneficial.
  • Users will not only experience increased muscle development, but also burn fat faster with regular use.
  • The product is caffeine free and uses natural supplements in conjunction with the body’s own chemical stores in order to reach desired results.


  • This product and it’s expected benefits have not been approved by the FDA or other government agencies.
  • Swallowing capsules may be difficult for some individuals, creating issue with regular usage.
  • The product will not help individuals who do not follow a regular bodybuilding routine and maintain a healthy diet.
  • Results are not permanent and without regular usage, muscle development will return to regular speed of development.

Nitro XL

Summary: Nitro XL utilizes a blend of L-Glutamine AKG, L-Arginine Alpha Ketoglutarate, L-Ornithine AKG, and Arginine Ketoisocaproate to increase the body’s ability to produce Nitric Oxide. As a result of increased Nitric Oxide, muscles receive a higher level of oxygen and blood flow. For the bodybuilder this means decreased fatigue and improved strength. Users are able to work harder during workouts without becoming fatigued and typically recover faster following a workout. This leads to increased muscle development in a shorter amount of time. Benefits only occur when the product is used as recommended in conjunction with a regular bodybuilding regimen. this product is not recommended for women or children and is primarily intended for individuals who already have a regular bodybuilding routine.

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RatingRated 2.5 stars

Allen Hicks is a professional bodybuilding coach and author. By using his experience, knowledge and understanding of all the intricacies regarding the fitness and bodybuilding industry, this websites delivers detailed reviews for every new supplement on the market. As an author, he may receive some small compensation for some of them, however we guarantee the neutrality regarding the evaluating of each of the products and the factuality of the information.