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  • For anytime energy and improved focus*
  • Supports amino acid intake with 5 g of amino acids per serving
  • 100 mg of Caffeine

Product Overview


With Optimum Nutrition ESSENTIAL AMIN.O. ENERGY you can get the energy + focus to achieve your goals and take on whatever life throws at you. ESSENTIAL AMINO ENERGY is scientifically designed to support your energy needs and your long-term training.

One serving of ESSENTIAL AMIN.O ENERGY increases energy and alertness with 100 mg of caffeine from natural sources and a burst of flavour you’ll look forward to mixing into cold water anytime.Take a 30-serving tub along to the gym or your office – wherever your busy day takes you.


Ready-to-mix Amino Acid Food Supplement Powder with Caffeine and Vitamin C, with sweeteners.

*Vitamin C contributes to normal energy-yielding metabolism. Caffeine contributes
to increased alertness and improved concentration.


  • 5 g of Amino Acids per serving

  • 100 mg of Caffeine
  • Vitamin C
  • Anytime Energy
  • Improved Focus

Suggested Use

Add 2 level scoops (9 g) to 330 ml of cold water and mix.

*Food supplements are not to be used as a substitute for a varied diet. Do not exceed the recommended daily dose. Keep out of reach of children. Contains caffeine (100 mg/serving). Not recommended for children or pregnant women.

Nutritional Information

Nutritional information will be shown when a flavour and/or size is selected.

Customer Reviews

Overall Rating (4.8)
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My go-to energy drink!

Review by Anonymous on Oct 1, 2022
Great before workouts and during energy dips during the work day. Tastes great too.

Amino Energy

Review by RM on Sep 28, 2022
The green apple taste pretty good. Overall it gives me a decent amount of energy.

Great product !!

Review by Sydney morris on Sep 27, 2022
Amazing !!

Amino energy

Review by Joe on Sep 20, 2022
Works great

Great pick me up

Review by Margarita on Sep 18, 2022
I first tried the watermelon with electrolytes which I loved, then when my online Big Warehouse stop carrying it I ordered directly from ON. I’ve tried green apple, blue raspberry, watermelon, and now in container Fruit Punch - this one is a great daily drink. Gets me amped up for a morning bootcamp class and I have even kicked coffee since this is enough to get me going! Will continue to buy these Amino Energy powders as they travel well and are a great enhancement to my exercise regimen.

Balanced energy, mental focus, and hydrates

Review by Ryan C. on Sep 1, 2022
I use this to grab balanced energy for my day. With work and staying fit, this product helps quite a bit, and I’ve been using it for about 7 years now. I typically use 5 scoops, 3 early in the morning and 2 at noon.

Amino Energy

Review by Johnathon Smith on Aug 31, 2022
The Blueberry Mojito is one of our favorite flavors. Light and refreshing. We have been purchasing for over 4 years now. It would be awesome to see a rewards program come out. We purchase 6 cans a month and it adds up. Very much worth it to us though! Great product!

Best supplement for anytime energy

Review by Niko on Aug 30, 2022
I love ON amino energy! Simple ingredients and great boost of energy. I will purchase again!!!

Amino Energy

Review by Chancy on Aug 23, 2022
This stuff is the best out there for clean energy! Everyone I know that uses it, does so daily and wishes they made the chewables again for portability.

Really works

Review by Anonymous on Aug 22, 2022
I take this with Kratom before workouts and its great. Also tastes great in blue raspberry. I also take by itself in the afternoon for a boost. Love this stuff!

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