Review Graph
Top Rated Flavors
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Most Recent
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Most Helpful
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All Reviews (125)
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Verified Buyers (124)

Fetz
Verified Buyer
Taste is very good. Mixes easily. Great anytime of the day drink*
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Customer
Increase Strength
Verified Buyer
USN AminoStim is a good supplement. Works well. Highly recommended.*
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Akito
Build Muscle
Verified Buyer
nice for the price.I think this products price and performance products*
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Lance R
Transformation
Verified Buyer
Great tasting product and I can feel a difference. I've been using the product for a few weeks*
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Hung L
Verified Buyer
This also my first time try this type of product. The flavor is great but different from my BPI BCAA. I think I like The BPI brand BCAA better.*
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oscar a
Verified Buyer
excelent product, good brand, highly recommended, impeccable presentation*
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Ken R
Healthy Lifestyle
Verified Buyer
Ian product of quality and value. Buy one get one deal for the win*
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Javan C
Burn Fat
Verified Buyer
First time trying USN AminoStim and the flavors are ok but product is decent*
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Jacob M
Increase Endurance
Verified Buyer
Really good flavor options and nice little jolt of energy here.*
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Kelly W
Verified Buyer
Green apple flavor is very good! Great post workout recovery drink or anytime you need some extra energy and aminos. Would definitely recommend.*
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Davindra D
Verified Buyer
Great tasting preserves muscle from burning gives energy from the caffeine but not jittery feeling *
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Bryan H
Verified Buyer
This is hands down the best caffeinated aminos I've ever had. Mixes all the way, no chalking Ness. I mix 1.5 scoops and sip on in throughout the day*
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BARBOSA
Verified Buyer
Great flavor and combination! I used before or during training. Stimulants in this formula feels decent for my personal experience. Recommend it and I will buy again *
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Rene C
Verified Buyer
Too sweet for my liking but mixex great with water and milk!*
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Connor Diill
Verified Buyer
I love this amino product. It tastes sooooo good. Another huge perk from the convenience perspective is that it has the caffeine already mixed in so you don't have to take an additional caffeine product.*
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Ilgar S
Build Muscle
Verified Buyer
Flavor is on point. Also i did like the caffein effect during training*
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Mandeep R
Healthy Lifestyle
Verified Buyer
Got it on sale great taste and great results gives you energy during workout *
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Jean Evens J
Build Muscle
Verified Buyer
It is a good supplement to have when you work out, good for booster*
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Miguel I
Verified Buyer
Flavor is ok. Take it for fasted cardio because of the no carbs and caffeine *
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Delt Ki
Verified Buyer
Good supplement and tastes good too. Gives good results, felt a lot more energized during workouts and non training days I drank it just during the day*
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Edward H
Verified Buyer
Best of the best. Recommended to everyone needing that little
Boost *
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Milo N
Verified Buyer
I enjoy using this product. The caffeine is good the boots with the hydration complex works well together.*
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The_MuscleWhisperer
Verified Buyer
great flavor, amino acid profile and energy with this product, I use it as a pick me up during work while also helping feed the muscle more amino acids.*
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Bruno C
Verified Buyer
Two great tasting EAA. They mix well but you may have a little bit of residue if you don't continuously shake before drinking.*
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jerry l
Verified Buyer
I dig it. Good flavor & the right amount of energy to sip this thru the day.*
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Connor Diill
Verified Buyer
I got a great deal on this product and all of the flavors that I have tried to date taste great. I definitely recommend this.*
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David D
Verified Buyer
Pretty good stuff for the price. Flavors are decent. Would buy again*
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oscar a
Verified Buyer
excelent product, good brand, highly recommended, impeccable presentation*
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DENISE Z
Verified Buyer
Didn't like the taste at all.The profile is ok.Didn't get much energy from it*
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oscar a
Verified Buyer
excelent flavor and a good brand, the especification its good*
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Adam H
Burn Fat
Verified Buyer
Great tasting, easily mixes. I use this as my energy drink while I’m at work and it also allows me to get aminos all day leading up to my workout once I get off from work. *
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A Dog
Build Muscle
Verified Buyer
Overall good product. It is slightly lacking as far as flavor goes but it isn't terrible either. I like the amino acid profile and caffeine that this includes. Nice to sip on at work.*
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Zach G
Verified Buyer
AminoStim is alright, it does what it’s supposed too but it’s way to sweet!!! Almost too sweet to drink, really need to water it down or add something else to bring down the sweetness *
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Spencer n
Verified Buyer
The old AminoStim was pretty much perfect and I wish I discovered it sooner. I tried the old Fruit Punch on a deal here, instead of my usual brand, and was reasonably impressed when I got around to trying and finishing it. It seems like USN has moved away from a more nutrient rich mix (No more Niacin, B6, B12, Riboflavin, Zinc, but added Magnesium) and for some reason I seem the potassium (or maybe newly added coconut?) seems more noticeable in Green Apple for sure, but even Blue Raspberry which makes me less eager to drink it than some of the other caffeinated amino drinks.
It's pretty solid overall though I think they had a great product before, but the taste of the potassium (or maybe coconut) taste drives me away from drinking it every day if I have another option. The Blue Raspberry is better, but I can't think of any Green Apple flavored BCAA drinks that I actually liked. I hope there is a unique mix of amino products for everyone and this might be tailored perfectly for someone else, but their old mix was very unique and I hope they consider returning to it.*
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Alex T
Sports Improvement
Verified Buyer
The flavor is good and tasty and it’s a very good amino acid.*
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Jude V
Verified Buyer
Both flavour is okay. But I like the green apple because of its rare taste*
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Bruno C
Verified Buyer
Great taste, disolves almost completely and does the work of helping energy a bit.*
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David M
Verified Buyer
the mango pineapple flavor was fantastic and the energy is what you'd expect from an amino.*
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Esteban G
Increase Strength
Verified Buyer
A soft amino is not strong but the performance is felt*
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Chris G
Healthy Lifestyle
Verified Buyer
Good taste, mixes easy. Notice a little perk up in energy before my workout. *
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oscar a
Build Muscle
Verified Buyer
Excellent product, good brand and the flavors are acceptable*
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Panagiotis S
Transformation
Verified Buyer
One of the best in its class. I will definitely order them again*
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Giorgi G
Build Muscle
Verified Buyer
best best best best best beat best best best best best best*
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Alex G
Healthy Lifestyle
Verified Buyer
Very good great price like the bluberry one way more but both are awsome*
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KYLE E
Verified Buyer
I'm new to this brand and so far so good. I try to train in the early morning when my gym is relatively quiet (I HATE busy gyms and waiting for equipment) and this stuff comes in handy short of my usual coffee consumption!*
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oscar a
Build Muscle
Verified Buyer
great product, very reliable, I like the brand and its presentation*
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Kevin E
Burn Fat
Verified Buyer
great taste for both flavors. My only complaint is that the powder doesn't mix that well. Seems a little chalky but overall, I'd buy both flavors and product again.*
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Connor C
Verified Buyer
Thanks it’s the god good good god stuff babe this is killer *
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Puneet S
Verified Buyer
Great flavour great product. Feels good without any jitters.*
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Ken R
Healthy Lifestyle
Verified Buyer
Purchased during a buy one get one promotion. Great flavor and mix ability*
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* Muscle & Strength does not imply any medical claims from this review. There are no
guarantees of specific results and results may vary.
* These statements have not been evaluated by the Food and Drug Administration. This product is
not intended to diagnose, treat, cure, or prevent any disease.