SLX Muscle
  • Editor Rating
  • Rated 2.5 stars
  • 40%

  • SLX Muscle
  • Reviewed by:
  • Published on:
  • Last modified: June 4, 2020
  • Overall
    Editor: 52%
  • Effectiveness
    Editor: 53%
  • Speed of Results
    Editor: 50%
  • Sustaining Results
    Editor: 45%
  • Safety
    Editor: 53%
  • Value
    Editor: 50%

What Is SLX Muscle?

SLX Muscle is a supplement designed to increase performance and results for bodybuilders and fitness enthusiasts. This is product is delivered in capsules and uses the best ingredients that integrate naturally into the human body to stimulate fast results. People who take this supplement can expect to see results in less than a month ranging from increased energy to enhanced definition. It is one of the many products available on the market that offer effective solutions to fast muscle increase without using steroids and other dangerous substances. It is a perfectly legal way to increase muscle mass, open up blood vessels, cut fat, and get ripped.

Sometimes, hard work simply isn’t enough, and that’s why supplements like this exist. People can work out for several hours a day and still struggle to see results because their bodies aren’t getting the right nutrients. Or, they may work out as much as they can and then become exhausted and depleted quickly. Bodybuilders need both the right nutrients and energy to push through every workout and start seeing better results. This product delivers ingredients that kick the body into gear and help it produce what it needs to get energized and muscular.



This supplement is made by SLX Muscle, a German company, and is targeted at German and English speaking customers. However, it seems to be intended for bodybuilders throughout Europe all over the world and may be accessed in a variety of languages. It is unclear where the product is actually manufactured as the company does not provide that information on their main website and does not list it anywhere else. It is likely that it is produced in Germany within or near their main headquarters. It could also be produced elsewhere in Europe or outsourced abroad to a cheaper manufacturing facility.

The fact that the manufacturing facility isn’t openly disclosed to customers isn’t something of concern. Many companies choose to keep this information private, whether due to privacy concerns, or revealing their production location just isn’t their main priority. They may also frequently change manufacturers, so there would be no point in permanently displaying it anywhere for customers to see. Since the company only uses natural and safe ingredients in its supplement, there are very few concerns over hazards or chemical purity or quality. Customers can be assured that the product can be safely manufactured anywhere without any special safety licenses or certifications.


How SLX Muscle Works?

This supplement works by delivering key ingredients to the body that promote increased muscle mass, energy, stamina, endurance, and definition. These ingredients swiftly conduct nutrients to muscles to make them larger and firmer without having to resort to illegal or dangerous steroids. The product ensure that users increase their nitrogen oxide production, a component responsible for improving energy, shortening recovery time, increasing endurance, and burning more body fat. When bodybuilders spend less time in recovery, they have more time to make improvements and see results fast. That is why the product promises that users will see results in less than a month.

Users should take the supplement at least once a day, preferably around workout times to enhance their lifting performance and enable them to workout harder for longer periods of time. People who use this product will not only notice increased energy and decreased regeneration time, but taking this supplement will also help to pump more blood into muscles by expanding the veins and capillary vessels. This allows more nutrients to get through and circulate through the muscles, giving them more nourishment and energy. This supplement has been clinically tested and its ability to promote muscle build up and fat burning has been proven by both labs and satisfied consumers.


Ingredients of SLX Muscle

This supplement uses carefully selected natural ingredients to stimulate dramatic results in users including Creatine Monohydrate, HMB Hydroxy Methyl Butyrate, L-Glutamine, L-Arganine, and AAKG Arginine Alpha Ketoglutarate. Creatine Monohydrate is produced naturally in the body and is primarily made by amino acids in the kidneys and liver. It gets transported in the blood to the muscles where it is used for fuel to gain more strength and muscle mass. Additional Creatine Monohydrate can be found in food, but natural sources of Creatine Monohydrate are typically animal products and cooking kills the majority of these performance enhancers. Taking a supplement with this sports ergogenic can get the muscles the nutrition they need that may be hard to get from food.

HMB Hydroxy Methyl Butyrate is another ingredient that helps to increase muscle mass in users. It also functions to prevent the breakdown in muscle, a common problem for bodybuilders who struggle to up their weight. This substance is essential to the metabolization of leucine, an essential amino acid that is used in the production of proteins, and is used by bodybuilders to enhance gains and stimulate strength. HMB is widely used to improve results in resistance training and can generally improve a user’s performance while reducing damage to hard earned muscles. Studies have even indicated that this ingredient protects the skeletal muscles, the muscles that are actually responsible for body movements.

L-Glutamine is another key ingredient found in this product for its role in protein production. This amino acid helps users cut fat and build muscle quickly in addition to enhancing workout performance, regulating blood sugar, preventing muscle wasting, and reducing recovery time. As the most common amino acid found in the blood stream, taking L-Glutamine is essential for all serious bodybuilders. L-Arganine is another protein building amino acid that supports muscle buildup in supplement users. Once in the body, it converts into nitric oxide which opens the blood vessels and promotes better circulation to the muscles resulting in greater muscle growth.

AAKG Arginine Alpha Ketoglutarate is a non essential amino acid that plays several important roles in the body. First, it aids the liver in breaking down by products that result from muscle stimulation and exercise. It also promotes stamina and helps bodybuilders and fitness enthusiasts workout longer. In addition, it reduces burn and stiff muscles, offering benefit both during training and after the workout is finished. This results in leaner body mass, increased muscle size, and significant strength.



The first advantage of taking SLX Muscle is improving blood circulation to the muscles. This also supports the other advantages such as gaining strength, increasing weight, cutting fat, reducing recovery time, and improving stamina. The ingredients of this product provide support for muscle building activities while protecting the brain, heart, and muscles from damage. All of these benefits come without any harmful side effects as the product is 100% natural and safe to use. Unlike anabolic steroids, this supplement won’t disrupt hormones, affect skin, or cause other bodily damages.

Since the product is natural and made with ingredients found in nature or naturally produced by the body, users can only expect to increase their health with continued use. Long term use is completely safe and will not result in buildup of toxins or harmful chemicals in the body, unlike other bodybuilding products. Just as continued use will not cause harm to the body, discontinuing use will not result in withdrawals or any other negative side effect. Users can get all of the energy, strength, and muscle increase they want from one natural and safe to use product. They also are not prevented from taking other supplements as the natural ingredients will not cause dangerous interactions with other products.



This supplement has not yet received any certificates for quality, effectiveness, or safety. Some bodybuilding supplement companies obtain certificates for user feedback, clinically tested effectiveness, or to prove the safety of their product. Although this supplement has proven to be effective and uses natural and completely safe ingredients, it has not been granted any certificates and does not display any on its main website. Since the company cares about reassuring its customers of the quality of the product, it is likely that it is working on obtaining certificates or plans to obtain them in the future. There are several other factors that come into play when determining why a product may not hold any certificates.

SLX Muscle is made up of natural ingredients and does not require state approval for production, promotion, or sale. Synthetic and potentially harmful chemical products are more likely to require certificates before being sold to the public and therefore have a much greater use for them. This product may choose to obtain certificates to boost its product and to highlight its effectiveness or quality, but certificates still remain optional. In lieu of certificates, the website provides information on customer satisfaction including the number of bottles sold. The company states that it has sold over 100,000 bottles, and many of these sales come from repeat customers who are satisfied with their results.



My older brother was always stronger than me. He used to win more school competitions and he used to beat me up a lot growing up. I didn’t know what to do and I often felt like I would always be the weaker one. He was obviously stronger and he had bigger muscles, but everything changed once I found SLX Muscle. After taking it for a couple of months I started to see the difference. My brother is afraid of me now in our tennis competitions because I have more endurance and I’m more fit even though we go to the same gym and do the same workouts. Me and my brother don’t fight anymore, but he’s definitely jealous of my muscle gains. — Garrison S., 32, Helena, MT, United States

I wanted to date this hot girl, but she didn’t like me because I had really small biceps. When I texted her and asked her why she refused to go out with me, she said that she likes only fit bodybuilder types. I was devastated. I really wanted to impress her and I felt tired of feeling skinny. Then, I heard about SLX Muscle from a friend. At first, I didn’t believe it would help because I was going to the gym and the progress wasn’t fast enough. In fact, I kind of got stuck in my progress, so I just decided to give it a go. Now, I love how I look in the mirror! I can look at my abs all day, and nobody sees me as that short, skinny guy now that I’m ripped. The girl called me some time ago and she seemed really interested in spending time together, but I already have an even hotter girlfriend. — Akio F., 29, Tokyo, Japan

My life has changed after trying SLX Muscle. After my car accident a few years ago I injured my leg and couldn’t work out for months. My muscles atrophied and a lot of my progress disappeared while I was in recovery. I was pretty sad because I had to watch years of hard work waste away as I laid in bed. Once I was better, I had to start from almost the very beginning. It was tough, but I was able to make faster and better progress after starting these pills every day. Within a few weeks, I felt and looked like the old me again. I will never forget how amazing that felt. — Otto M., 28, Hobart, Tasmania, AU


Awards & Media Coverage

This product has not received any awards or media coverage, but there are several explanations for this. To begin with, SLX Muscle is a relatively new product and has only reached a small number of users. This means that while the product is safe and effective, not enough people know about it yet for it to be a big deal. As the number of users increases and reports of the product’s effectiveness spreads, people can expect to hear more about it in the media. This can even include social media where many trends are discovered and where information goes viral fast.

Awards may not be granted to this product for a while because it is so new. The product also cannot expect to receive any major awards until its number of users increase and it becomes widely known and used as an industry standard. Because it is not the first of its kind, it is unlikely that it will receive any awards until it reaches this status. However, because it has been clinically proven for effectiveness and uses safe and natural ingredients, it may already be eligible for an array of safety or quality based supplement awards. It may also receive awards for its clinical studies on effectiveness if the conducted studies meet necessary requirements to receive such awards.


Money-back Guarantee

The company promises the effectiveness of its product and reassures shoppers of its safety and quality, but it does offer a money-back guarantee. The money back guarantee exists to offer shoppers an additional level of safety and security and to enhance the company image. If users are not satisfied with the product, they are eligible to get a full refund for their purchase. This tells buyers that they can try the product without worrying about wasting money if it doesn’t work out for them. This also shows them that the company believes in the effectiveness of their supplement so much that they will give any unsatisfied users a full refund.

While the company offers a 100% money-back guarantee to unhappy customers, they don’t specify the requirements for obtaining the refund on the main page. There is no specific timeline detailed on the main page or the checkout page of the website, and they can only obtain this information by reading the terms and conditions. The company promises results within a few weeks, and the conditions state that they allow customers to sample their product for up to fourteen days to assess whether they like the results of taking the supplement. If customers wait longer than the allotted fourteen days to activate their money-back guarantee, the company will not provide a refund and the customer will be left paying the full amount for their order.



The company claims that customers can have their orders within twenty-four hours, and it is likely that it offers other shipping options as well. It is unclear whether all orders are shipped and delivered within that time frame or if it is only an express shipping option. They also don’t specify whether this shipping is free or whether it costs an additional fee for urgent delivery. Most likely, standard shipping options are available including three-day shipping and regular ground mail shipping. The company also ships products internationally using various shipping options for customers outside of Germany.

Just like shipping fees are unspecified on the main checkout page, it is also unspecified whether the company offers shipping insurance. Shipping insurance is a cost-effective way to ensure that lost or damaged products are financially covered. This is optimal when buying supplements online, especially when they are sold at a higher than average price. The company respects the privacy of their customers and always delivers its product in a plain, anonymous package. This package is small enough to fit in customers’ mailboxes, so buyers can be reassured that their product won’t be left on the ground or the street for everyone to see.


Customer Support

SLX Muscle does have a customer support team, though they make it unclear how to come into contact with them since no phone numbers or emails are listed on their main website page. They do, however, list one email on their terms and conditions page and indicate that customer support should be contacted via that address. A phone number may be provided after an email inquiry has been sent, though this is not exclusively specified. The customer support service email should be used regarding all refunds, questions, comments, and concerns. Customers should wait for a reply at least one full business day before resending their questions or requests to the customer support team.

The customer support team handles all money-back guarantee inquiries and needs to be contacted immediately before the end of the fourteen days. It is also advisable that shoppers request more information directly from the company if they have any pressing questions regarding directions, side effects, or safety issues. The customer support team replies in German and is likely located in Germany. However, it may also be able to answer questions in English and several other European languages. If they are unable to assist customers in their native language, it is advisable to use an online translation service to resolve issues quickly.


Safe & Secure Checkout

When doing online shopping, it’s always important to check out the safety and security of the website or store. Secure websites and online shops have SSL certificates which indicate that all information between the website and the user is encrypted. When data is encrypted, outside hackers or eavesdroppers are unable to decode the information sent and received. This is an extremely important detail when entering and submitting personal and financial information. The company does not currently use SSL certificates on its main web page or all of its checkout pages.

It does guarantee safety on the pages where the payment information is actually entered, however, and SSL certificates are present where it really matters. This can be verified by examining the URL bar for a green lock symbol next to the word “Secure”. If shoppers see this, they know that their connection is safe and that they can enter their banking information with minimal risk. The company does ensure that their checkout web page is encrypted for user safety, which adds to the legitimacy and quality of shopping with SLX Muscle. It also works with PayPal to ensure that shoppers never have to enter their banking information online.



SLX Muscle offers different pricing options and comes in a variety of packages. The prices are given in Euros on the product website, but they will be listed here in US dollars. Each bottle comes with sixty pills, a supply that can last about a month. One bottle of supplement with sixty pills is sold for about 167 dollars. The company offers a bundle of three bottles with 180 pills for about 210 dollars. They also offer a huge bundle of six bottles with a whopping 360 pills for around 293 dollars.

The savings increase as the number of bottles purchased increase as well. The price of buying two individual bottles would cost over 320 dollars, but shoppers can get three whole bottles for about a third of the price by buying the three bottle bundle. The savings increase even more when buying the six bottle bundle, making it a more favorable option for customers who plan to continue using SLX Muscle over long periods. The company does also offer installment plans at checkout so that shoppers don’t have to pay the full amount at once. This makes saving money with bundles much more convenient and financially manageable.


  • SLX Muscle is made from completely natural products that work to stimulate the body’s resources including the amino acids L-Glutamine and L-Arganine.
  • This supplement can help users gain more muscle, cut fat, reduce recovery time, and increase stamina and strength in less than a month.
  • The company offers a money-back guarantee to all customers who aren’t satisfied with their results.
  • The company works with PayPal to help users easily make purchases.


  • The money-back guarantee only allows users fourteen days to request a refund and may not be sufficient time to see results.
  • Customer support can only be contacted through email, and the email address can only be found on the terms and conditions page.
  • All pages of their main website are not encrypted and secure.

SLX Muscle

Summary: SLX Muscle is a natural supplement used to boost muscle growth, enhance fat burn, and increase definition without the use of anabolic steroids or other dangerous substances. Using natural ingredients like L-Arganine and Creatine Monohydrate, this product enhances the body’s ability to lift weights, recover quickly, and cut fat. This supplement is made by a German company but can be used by people all over the world. Over 100,000 bottles have already been sold, and many of them were purchased by satisfied, repeat customers. With clinically tested results, this supplement can help users safely and naturally get significant results with no side effects.

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.