Ultimate CRN-5 Review – Is It Really Effective?

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By Jack Cincotta, MS

Reviewed by Juliana Tamayo, MS, RDN - Last Updated

ultimate crn 5 review

Creatine is one of the most well-researched and widely-used sports supplements in the entire world. And you may be wondering, are there really any major differences between creatine supplements?

Well, the answer is “yes”, because there are differences in creatine supplements regarding the forms used as well as other ingredients sometimes added in. Ultimately, you want a creatine supplement that is safe, well-researched, and properly dosed. So, how does Ultimate CRN-5 by Crazy Nutrition measure up?

If that’s what you’re wondering, keep reading this Ultimate CRN-5 review to see the main features of this Crazy Nutrition creatine supplement. We’ll also look at this supplement’s key ingredients, health benefits, pricing, and more to determine if it’s worth buying.

Ultimate CRN-5

About Ultimate CRN-5

Ultimate CRN-5 is a next-level creatine formula crafted by Crazy Nutrition, a company that makes many other sports supplements too, such as Intensive Pre-Train and Tri-Protein

Crazy Nutrition Supplements

The CRN-5 formula is advertised as a step above other creatine supplements because it contains five types of creatine plus key electrolytes for optimal workout performance. 

The specific forms of creatine in Ultimate CRN-5 are also made to eliminate the need for any cycling or loading phase. And it’s also designed to be free of bloating, which can happen with other creatine products. 

Ultimate CRN-5 Benefits

Crazy Nutrition Ultimate CRN-5 claims to stand out by delivering these main benefits:

  • Enhanced Strength & Muscle
  • Improved Hydration
  • Increased Energy
  • Improved Recovery
Ultimate CRN-5 Supplement And Shaker

Enhanced Strength & Muscle

Hitting a strength plateau in the gym is very frustrating and defeating. As a lifter, you want to do all you can to maximize strength.

And Ultimate CRN-5 claims to enhance muscle strength. The five forms of creatine in CRN-5 are meant to help your muscles deliver stronger contractions during high-intensity training. This may also lead to greater muscle growth over time since increased strength is a key driver of muscle development.

Improved Hydration

Dehydration can really stop a workout in its tracks. Or if you keep working through it, you might have cramps, headaches, or increased fatigue.

One of the unique claimed benefits of Crazy Nutrition CRN-5 is its ability to improve hydration. This is due to the combination of critical electrolytes, such as sodium, potassium, and magnesium. 

Increased Energy

There are just some days when you don’t have as much energy to do your workouts. But of course, skipping too many workouts over time isn’t a good option if you want to see optimal progress.

Ultimate CRN-5 is advertised to improve your energy levels, mainly in the muscles. The five forms of creatine in CRN-5 are designed to decrease fatigue and allow your muscles to work harder, for longer.

Improved Recovery

Poor recovery limits progress even in people who have the so-called “perfect” training regimen. You need to give your muscles proper recovery to spark new growth.

And Ultimate CRN-5 creatine is promoted as an effective supplement to boost recovery. The unique combo of creatine types in this formula may help repair muscle damage and replenish your muscles with the energy they need to be ready to go for your next session.

So, is Ultimate CRN-5 really the ultimate creatine supplement? Keep reading to find out.

Ultimate CRN-5 Ingredients

Ultimate CRN-5 contains eight ingredients, which are the five types of creatine and three electrolytes.

Below are the Ultimate CRN-5 ingredients:

  • Creatine Monohydrate
  • Creatine Hydrochloride
  • Creatine Ethyl-Ester
  • Tri-Creatine Malate
  • Creatine Citrate Pyruvate
  • Aquamin® Magnesium
  • Sodium
  • Potassium
  • Calcium
Ultimate CRN-5 Supplement Facts

Creatine Monohydrate (3,750mg)

Creatine monohydrate is by far the most well-studied form of creatine. And it’s in dozens of other creatine products, such as Creatine X3.

Creatine supplementation allows more creatine to get into your muscles in the form of creatine phosphate. This ultimately allows for greater ATP (energy) production during high-intensity exercise, such as heavy weightlifting or sprinting. Research shows that creatine monohydrate is effective for enhancing strength, power, and lean mass.

Not to mention creatine improves muscle recovery, both in terms of during the workout and after the workout. 

Other Creatine Forms:  Creatine HCl, Creatine Ethyl-Ester, Tri-Creatine Malate, Creatine Citrate Pyruvate

The other four types of creatine combine for 1,250mg, which is good because that adds up to 5g when combined with creatine monohydrate. And this is typically seen as an effective dose.

There is some evidence that these forms of creatine have a higher bioavailability and are better utilized. However, there aren’t really any specific benefits of these forms over creatine monohydrate.

Regardless, these types of creatine will still have benefits too, so it’s not a bad thing to have them included. 


There are four electrolytes in this product too: Magnesium, calcium, sodium, and potassium. 

All of these electrolyte minerals are important for maintaining hydration and exercise performance.

Sodium and potassium work with each other to regulate fluid balance and cellular hydration. They also have roles in nervous system health and heart function.

Magnesium and calcium are important for muscle contraction and relaxation, as well as heart and brain function.

There aren’t any massive benefits of electrolyte supplements unless you’re exercising at a really high intensity and/or in a very hot environment.

But at the very least, they ensure you’re not deficient and help to maintain exercise performance. Not to mention reducing the risk of cramps, headaches, or fatigue.

Ultimate CRN-5 Powder Scoop

Does Ultimate CRN-5 Work?

Ultimate CRN-5 should definitely work as a creatine supplement.

While the five different types of creatine aren’t necessary, they still are beneficial. And there is a chance that some people will absorb the other four types of creatine (besides monohydrate) at a better rate. 

Regardless, it’s most important to know that CRN-5 contains a good dose of creatine and uses effective forms of creatine.

These should all help increase strength, power, energy, and muscle gain, while improving recovery. 

Claims vs. Reality

Creatine is effective for the majority of people, and this Ultimate CRN-5 supplement should be effective too.

It’s likely that users will experience the claims mentioned, such as enhanced strength, increased energy, and better recovery. However, some people are simply non-responders to creatine, so there’s a chance you won’t see much benefit.

Also, I wouldn’t expect the electrolytes to offer any major benefits, but they still should help improve hydration and may improve exercise performance, especially if you typically sweat a lot or have really long training sessions.

Lastly, you may notice a bit of improved recovery in between sets, as well as after your workout is over.

Who is Ultimate CRN-5 Best For?

Ultimate CRN-5 is, in my mind, best for people who have already used regular creatine monohydrate and are looking for a potentially more effective supplement. 

Ultimate CRN-5 Bottle And Powder

If you’ve never used creatine before, I suggest just using plain creatine monohydrate, such as the one from Bulk Supplements. But if you’re an experienced lifter and want to see if there are any extra benefits from this product, it’s definitely worth looking into.

How to Take Ultimate CRN-5

Ultimate CRN-5 comes as a powder.

Crazy Nutrition recommends adding one scoop of CRN-5 to 16oz of water 30 minutes before your workout. You can shake it up in a shaker bottle or just stir it up in a glass. 

Ultimate CRN-5 Bottle And Shaker

Is Ultimate CRN-5 Safe?

CRN-5 should be safe for nearly everyone. Possible side effects are limited to digestive symptoms, such as upset stomach or bloating.

Also, there is over 1,000mg of sodium included in this formula, so it may not be safe for people on sodium-restricted diets. 

Crazy Nutrition Ultimate CRN-5 is made in an FDA-approved, GMP-certified facility. It is suitable for vegans and vegetarians. 

Where to Buy Ultimate CRN-5

You can buy Ultimate CRN-5 on the Crazy Nutrition website at this link. It comes in Lemon & Lime or Orange & Mango flavor.

ultimate crn 5 website

There are 30 servings (30 scoops) per container of Ultimate CRN-5, which costs $44.99 ($1.50/serving) for a single purchase. 

You can also get the Subscribe & Save option, which will save you 30% and lower the price to $31.49 ($1.05/serving).

This price is quite a bit higher than regular creatine monohydrate products. But this makes sense given that CRN-5 has more ingredients. It all depends on if you find the extra benefits of these ingredients to be worth the extra price.

ultimate crn 5

Get up to 30% OFF

Ultimate CRN-5

  • Formula includes Creatine Monohydrate, Creatine Hydrochloride, and more
  • Made in an FDA-approved, GMP-certified facility
  • Benefits strength, hydration, energy, and recovery

Final Verdict: Ultimate CRN-5 Review

That’s the end of my Ultimate CRN-5 review.

Overall, it’s a high-quality creatine supplement. It includes primarily creatine monohydrate, but also four other forms of creatine and three electrolytes. These may improve workout performance, increase strength and muscle, improve hydration, and help you recover better. 

Ultimate CRN-5 is a good option for people who’ve already used regular creatine and want to see if there are extra benefits from this supplement.

Overall Rating:
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Jack Cincotta, MS

Jack Cincotta is a certified holistic health coach through AFPA and a board-certified holistic health practitioner through AADP. He has written hundreds of articles on nutrition and supplementation. Jack has a M.S. degree in Psychology and is passionate about researching the science behind nutrition. He often uses research-backed supplementation protocols for many of his clients to optimize results.