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EF13 Muscle Supplement: Will It Work For You?

Rated: 3.5 out of 5
by BuildMuscle.com

Best product to build muscle As any experienced user of supplements knows, one of the key things you want in any nutritional aid is for it to somehow add something or give a boost to some process within your body. EF13 Muscle Supplement, is designed to boost the levels of nitric oxide in the bloodstream which, in turn, boosts the circulatory system's ability to transfer more nutrition and more oxygen to the desired muscle tissue.

In addition, EF13 Muscle Supplement claims that its formula is based on a natural ingredient list unique from other similar supplements. The aim of this formula is said to have benefits for beyond that of boosting nitric oxide. The company also claims that the user will experience increased performance and stamina, not only during workouts but also during sexual activity. Further claims indicate accelerated muscle mass production and fat reduction. It should also be noted that EF13 Muscle supplement is a made in the U.S.A.

Working Process

EF13 Muscle Supplement

If you are serious about taking your body to the next level and even beyond then you know that bodybuilding requires a comprehensive approach. You not only have to adhere to the right type of weight training regimen, you also need to stick to the right kind of diet and even sleep schedule. All these aspects and others combine to get and keep your body running like the fine tuned machine that is should be. So, as one would expect, the right kind of supplement, one that works to enhance all of the key processes, is critical - and that's where EF13 Muscle Supplement comes in.

The boosting of nitric oxide within the bloodstream is critical to supercharging all the key processes to maximize the benefits of pumping nutrients and oxygen to starving muscle tissue. Add more nutrients and more oxygen and muscle tissue thrives. Add stronger muscle and reps increase. Add more reps and you develop more lean muscle mass. Add more lean muscle mass and fat begins to melt away. Add more of all of that and you sleep deeper and longer. Sleep better and recovery time decreases. Hmmm, there seems to be a pattern here.

Ingredients in EF13 Muscle Supplement

  • L-Arginine HCL - In order to produce higher levels of blood flow you need an agent that will stimulate the production of nitric oxide. L-Arginine added to hydrogen chloride create a compound that leads to increased absorption rates of amino acids which, in turn, leads to higher levels of nitric oxide in the bloodstream.
  • Tribulus Terrestris - All around the world, and for hundreds, if not thousands of years, this herbal extract has been considered a potent aphrodisiac due to its ability to boost libido and help produce and balance hormonal production in male users.
  • Maca - With roots that go back thousands of years in Central and South America, this all natural plant extract is said to give a boost to all kinds of system functions within the body from enhanced stamina, cognitive functions and even erectile and other male sexual dysfunction. Other claims include that it has proven benefits for the immune system.

Other listed ingredients include Yohimbe for overall sexual conditioning and horny goat weed as an additional supporter of the circulatory system.

EF13 Muscle Supplement: Pros And Cons


  • EF13 Muscle Supplement addresses the key aspects of boosting nitric oxide levels in the bloodstream leading to a higher level of nutrients and oxygen reaching muscle tissue to promote the growth of lean muscle mass and fat reduction.
  • Ingredients support increases in libido and sexual performance.
  • The thirty day trial period allows new users to test its results and return any unused portion is not completely satisfied.


  • Some ingredients, including Yohimbe, though thought to be highly beneficial in certain areas, are also reported to have negative side effects which could be life threatening.
  • EF13 is only available through its official website which is often a sign that other, more independent online and offline retailers may be dubious of its effectiveness.

Beyond The Basics

Any basic muscle building supplement worth its salt must contain ingredients that will improve nitric oxide levels to build lean muscle mass and reduce fat. But to be considered a top tier product it should also offer ingredients that promote increased production in testosterone levels. EF13 Muscle Supplement claims to meet those standards when used by men who use it as part of a comprehensive lifestyle incorporating proper fitness and dietary components.

Does EF13 Muscle Supplement Have Side Effects?

As always, it is recommended that any man considering the use of a muscle building supplement consult with a qualified medical profession before beginning use. In this case, that is especially true given that EF13 Muscle Supplement contains an unspecified quantity of Yohimbe, which has been reported to carry to possibility of serious side effects believed to be associated with life threatening health issues.

Suggested Dosage

The manufacturers of EF13 suggest a daily dosage of two capsules per day.

EF13 Muscle Supplement: Our Conclusion

Any man who is serious about building muscle and attaining a model male physique has to be serious about everything from workout regimens to dietary choices and sleep habits. Another choice that is critical relates to his choice of supplements.

Looking at everything EF13 Muscle Supplement has to offer, both pros and cons, it is clear that, even though it contains all the key ingredients to boost nitric oxide and therefore, increase lean muscle mass, these quantities of these ingredients is unspecified and cannot be fairly judged as to the effectiveness. That being the case, no one can say whether or not EF13 Muscle Supplement has enough of the necessary elements to needed to meet its stated claims.

When looking at the available comments by users, the consensus is that EF13 does not measure up to its claims as those available comments are overwhelmingly negative.

Taking the factors into account, it is our conclusion that EF13 Muscle Supplement does not offer the kind of evidence as to its effective and safety that a true top line muscle building supplement should offer to prove itself. We suggest that any serious male intent on changing his life by transforming himself, body, mind and soul, should stick to the best the market has to offer.

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