Description
Price: $44.99 - $40.50
(as of Aug 21, 2026 20:33:49 UTC – Details)
The Gold Standard of Flavors: Optimum Nutrition raised the bar on flavor with Essential AMIN.O.Energy with options like Concord Grape, Blue Raspberry, Fruit Fusion, and Green Apple. From the raw materials we source to our state-of-the-art manufacturing processes, no compromises are made. 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.
Product Dimensions : 4.75 x 4.75 x 6.88 inches; 1.29 pounds
Item model number : 1048393
Date First Available : November 27, 2013
Manufacturer : Optimum Nutrition – NutWell
ASIN : B00GY5E39Y
Best Sellers Rank: #322 in Health & Household (See Top 100 in Health & Household) #1 in Branched Chain Amino Acids Nutritional Supplements #55 in Sales & Deals
Customer Reviews: 4.6 4.6 out of 5 stars (12,745) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
AMINO BLEND – a perfectly blended mix of amino acids to aid in muscle recovery
ENERGY BLEND – 100mg of Caffeine to help boost energy and help you get through the day or a grueling workout
MENTAL FOCUS – don’t allow the day to get the best of you, the unique formula in ESSENTIAL AMIN.O. ENERGY helps provide you with the mental focus you need
ANY-TIME FORMULA – this unique formula is perfect for any time of the day such as helping you get energized and focused in the morning, helping to stay focused and productive in the afternoon, or even supporting your energy levels and focus in the gym
Kandace Salchenberg –
Great pre workout with a delicious flavor
I absolutely love this pre-workout and the watermelon flavor tastes great. This gives me the perfect boost of energy before my workouts without making me feel jittery or causing the tingling sensation that some pre-workouts do. It helps me feel focused and ready to train without being overwhelming. This has become my go-to pre-workout, and I love, love, love it! I’ll definitely keep buying it and highly recommend it to anyone looking for clean, smooth energy.
Austin –
Need Clean Energy? Here’s Your Product!
I can’t say enough good things about ON Amino Energy. I work out 6 days a week and switched to ON Amino Energy after using several different designated pre workouts. ON Amino Energy blows those pre workouts out of the water! I get just as much energy, if not more, from this product over designated pre workout drinks. The energy also feels super clean, like you’re not over stimulated or jittery. I also feel like I actually have more stamina during my workouts with this over the other pre workouts I have tried. This product mixes very well, no clumping. Tastes great. I use 2 scoops per workout and it is more than enough to get through 30-45 min HIIT workouts. Can’t recommend this enough!
Teresa –
Works wonders
I have been using this stuff for about 10 years and absolutely love it. There are multiple different flavors to try. Take as directed, 1 scoop per day is all I needed. If I take more than one and after a certain time of day, it does keep me awake. I just add a scoop to my water bottle shake until it dissolves, easy to digest.
Chris Dudek –
Great Boost and Great Taste!
I’ve been using Optimum Nutrition Amino Energy – Watermelon for years now. I have one drink during my workout and another one after. Admittedly, the second one is just because I really love the flavor. It isn’t as intense as a pre-workout, but it provides the right amount of caffeine to wake me up and keep me going.
Jason R Lattergrass –
First Single Serving, Good Little Energy Boost, Good Taste, Good Presentation *UPDATE
So, for right now, I’m going to leave a 4-star review, only because I’ve just received it, and I haven’t had a chance to use it for the reason I bought it for, which is to replace sugar-free Monster energy drinks that I would buy everyday before clocking in at work. I’m testing out a single serving of it now, and will update at the end of this upcoming work week. I’ll leave a few initial thoughts, for now:
Amazon Customer –
Optimum Nutrition Amino Energy – Watermelon Flavor – A Perfect Boost!
I’ve been using Optimum Nutrition Amino Energy as my go-to pre-workout for a few weeks now, and I’m really impressed! Here’s why:
Yahaira –
Clean energy feeling
I can see why this product is popular. It gives a nice energy boost while also helping me stay focused during workouts or long days. The flavor mixes well with water and did not taste overly artificial compared to some other energy supplements I’ve tryed.
A Moxy of Doxies –
Like the flavor and will rebuy!
Tastes good! I love that this powder is low calorie and zero sugar. Gives me a mild boost without any heart racing effect. Dissolves well too.
فارس الغامدي –
Tasty
Tasty
Vincent Rotich –
Energy booster
Nice energy boost for workouts. Suitable if you focus on burning calories, I enjoy most of their flavours.
Octavio De Gante –
Excelente opción . Súper recomendado.
Delicioso y a un excelente precio. Lo volveré a comprar
Nsoollz –
Great taste
Amazing
Jimmy –
Good pre-workout as usual
2nd purchase. Great deal!