All American Efx Karbolyn

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Usually, when you are in the market for purchasing a pre-workout you will notice that most of them are full of caffeine and sugar. That is what gives you the energy and the pep you need in most formulas to get the energy you need for your workout. Instead of using caffeine and sugar to give you that needed boost of energy they use a complex carbohydrate they have trademarked as Karbolyn. The carbohydrate going straight to the muscle to fuel it and give it the energy it needs to get the workout done. This also means there is significantly less crash than other pre-workout powders.  

Since this pre-workout is stimulant-free it relies on the body's process of absorbing and using complex carbohydrates. It’s quickly and simply absorbed into the bloodstream as fast as dextrose or simple sugar would be so you do get that instant burst of energy but without the spike and crash. So if you need that extra sustained push training in the gym, running, boxing or practicing MMA this is a great powder to add into your routine to get you towards your goals.

Editor's Pros & Cons


Multiple Flavors

Caffeine Free

Complex Carbohydrate

Clump Free

Sustained Release


Not Keto Suitable

Possible Bloating


Let's be honest, more pre-workout supplements don't taste very good. Most people are not looking first for great taste but if the product works. The All American Efx Karbolyn delivers on both those claims. Not only does it taste great but it comes in a wide variety of flavors, you can get neutral which has no flavor if you want to add your own flavoring or just don't want any taste at all. It also comes in 13 other flavors. If you are not a big fan of a sugary tasting liquid I would stick with the neutral as it has no added sucralose which the other flavors do. Some customers actually complained that the taste was too concentrated but that they liked the results and energy they got from it. So if you happen to not like the taste but you can work past it the product doesn't let you down.


Their flavored options are chocolate overload, fruit punch, green apple, kiwi strawberry, orange, rainbow candy, raspberry lemonade, strawberry, blue razz watermelon, blueberry lemonade, cherry bomb pop, cherry limeade, and tropical storm. It's also available in a neutral flavoring which has no sucralose in it at all, unlike the favored options. With all these different flavors to choose from, you are sure to be able to find one you like the most.


Unlike most pre-workouts, this formula is a little bit different because it is free of both caffeine and sugar. The ingredients overall are actually quite simple depending on what flavor you get. The neutral flavor only has 1 ingredient and that's the karbolyn complex carbohydrate, so if you are looking for simple ingredients this is the one for you. The flavored options differ from flavor to flavor but most of them are natural and/or artificial flavorings, colored dyes and sucralose as the main ingredients along with the karbolyn. The thing that is great about these pre-workouts is that there isn't a bunch of unnecessary ingredients in them that you may not even be able to pronounce or read. They like to keep it as simple as they can which is great from someone just looking for clean fuel and not a bunch of other ingredients.


Some customers had mixed thoughts about the effectiveness of this product, but the majority was quite happy with how it worked for them. The main complaint was that it just sat heavy and bloated in the stomach after consumption and didn't actually provide any energy like expected. However, most of the customer reviews were quite happy with how his product worked for them. That it gave a burst of sustained energy and focus to get them through the workout with no jitters like you would have with caffeine or sugar-heavy formulas.


Most customers who are dedicated to the gym already and have tired different pre-workouts and protein powders most likely already own their own shaker bottles. However, for this formula, you don't even necessarily need one. If you want it to be an easy grab and go with your shaker it will still work as effectively but this formula is created so there is no clumping and no gelling which means it should mix into water very easily with just a spoon. This is a relief if you have ever had clumpy powder stuck to the bottom of your cup that you just couldn't get off but ended up eating at the end of the beverage.


Unlike other brands that have a huge ingredient list that you may or may not even be able to pronounce or even read, Karbolyn is completely different. The only additives or fillers they add into their products are ones for flavor formulations and those are not even fillers just ingredients necessary for color and taste. If you really want to avoid anything completely unnecessary they offer a neutral flavor that has nothing else added to it, it's simply just the karbolyn complex carbohydrate powder. If you are looking for a brand that is free of any fillers your body doesn't want or need the All American Efx Karbolyn is for you.

Complex Carbs

We have all heard that carbs are bad for you, the truth is that not all carbs are created equally. Simple carbs are anything refined and processed like white bread, table sugar, and milk. They only have 2 sugar molecules linked together and are broken down by your body very quickly. This results and a spike and crash for most people and they don't feel great after eating them. Complex carbs, on the other hand, are more nutrient-dense and take a lot longer for your body to digest. They help keep you full for longer and don't cause that spike and drop as simple carbs do. In a nutshell, it's much healthier for the body to be consuming complex carbohydrates than it is to be consuming simple ones which are known to add weight gain. The complex carbs will also give you a more sustained and healthy energy which your muscles will need during a heavy workout.


You will be happy to know that the All American Efx Karbolyn is 100% sugar-free. If you buy the neutral flavor they don't use anything to sweeten it, this means you can use your sweetener of choice or just keep it the way it tastes already. The range of 13 other flavors they offer are all sweetened with sucralose which is an artificial sweetener that tastes almost exactly like sugar. Sucralose is actually sweeter than sugar itself so less is used to achieve the same amount of sweetness. It is also 0 calories which are great for people watching their sugar intake or calories as the body doesn't break it down like normal sugar.


It won't take long after your drink All American Efx Karbolyn in the flavor of your choice to start feeling the effects. By the time you drink this and drive to the gym, you should be feeling the energetic effect of your muscle tissue flooding with glycogen from the complex carbs. Once you start your workout this pre-workout powder should give you a full 2 hours of stimulant-free energy. It has a sustained release so no crash after it wears off.


With All American Efx Karbolyn, you should be completely avoiding the dreaded crash after pre-workout powders that some of us know all too well. Because they use a complex carbohydrate as their main ingredient and not caffeine or sugar you will avoid a stimulant crash. However, depending on the person, some people are more affected by carbs than others. If you tend to feel like you crash after eating foods like whole grains, beans, and fruit than this may not be the product for you. If you are on a keto diet your body will be quite susceptible to carb crash if you take this product as it will also throw you out of ketosis.


This product comes with its own scoop so you know exactly what the recommended serving size is. One full scoop is around 50.8 grams and you get around 40 servings in one 4 pound container. They make a smaller container at 2 pounds that's harder to find than the average 4 pounds one. The total serving size for the smaller container is 20 servings per. This is a pretty standard amount of servings for most pre-workout powders, it could run a bit higher in servings depending on that size container you are used to buying in comparable powders.

Side Effects

Out of most pre-workout powders the side effects of this one and quite low. This probably has to do with how little ingredients it actually contains. One side effect reported were people who had a sensitivity to carbs felt bloated and like it sat in their stomach the entire workout. If you find you have an adverse reaction to carbs this may not be the product for you. The only other side effect reported was gastrointestinal distress. This is most likely from the artificial sugar they use in the formula. Sucralose in some people is known to cause upset stomachs and bowel distress if you know you are sensitive to artificial sweeteners avoid this product or choose the neutral flavor. If you choose the neutral flavor you are able to add your own sweetener of your choosing. If you have problems digesting sucralose it's recommended to use Splenda as another 0 calorie sweetener.


One of the big advantages of this product is that you get the energy you need without caffeine or sugar. This is a huge draw to people who are either trying to cut sugar or caffeine out of their diet or someone who is too sensitive to stimulants. Whatever your reasoning this product has neither of those things that are typically found in most pre-workouts. If you have never tried a pre-workout before it has so many advantages to up your workout game. Its goal is to provide you with the energy you and your muscles need to get through your workout and then some. So you will see gains and results faster without being too fatigued. It also comes in many different flavors unlike some companies that only make one or two, you are sure to find one you will like.


This product doesn't actually have too many disadvantages. It doesn't work for absolutely everyone so if you are on a keto diet or you know that your body doesn't respond well to carbs you might want to avoid this product as some people felt bloated and heavy after taking it.

Bottom Line

If you are in the market for a pre-workout that is stimulant free and you react well to complex carbohydrates as a source of fuel, then this would be a great product for you. It comes in a wide variety of 14 flavors so you are sure to find one that you like. With this product, you will get the energy to get the results you need in the gym, on a run or while boxing. Easily mixed with water just store a scoop of the product in your shaker to easily throw in your gym bag and take on the go.