Skip to content Skip to navigation
15% off your first order when you sign up to our newsletter
Free delivery for orders over £50

Save £10 - Gold Standard Whey 2.27kg x 2

Essential AMIN.O. Energy

  • 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)
Write your review here. For complaints and questions we would like to refer you to our customer service.
Please enter a headline
Please enter a comment
Please enter a rating


Review by Joe on Jun 2, 2023
Verified purchase
I love this product. I started to notice a change within days of use.

love this product.... been taking it for years.

Review by Rick B on May 30, 2023
Verified purchase
Concorde grape is fantastic, it's the only flavor I buy . mixes perfect in a shaker with ice cold water. perfect afternoon pick me up and great for during workout.

Quality item

Review by Gina on May 25, 2023
Verified purchase
I suggest getting this product right from the source. I’ve ordered from Amazon and it doesn’t seem like they have enough quality control in line.

Always the best!

Review by Jackie F on May 21, 2023
Verified purchase
I have used AE for years and it never gets old and it’s always the best.


Review by Jason on May 14, 2023
Verified purchase
Great products for fair pricing ..

Great taste!

Review by April on May 9, 2023
Verified purchase
I use this before my early morning workouts and it's the only pre-workout I can use on an empty stomach. Love the blue raspberry and fruit fusion flavors the best.

Amino Energy-orange and grape

Review by Dan Slous on May 2, 2023
Verified purchase
This product we really like not only what it does for BCAAs but also for the great taste. Highly recommend this product

Amino Energy!

Review by Benjamin Bohling on Apr 30, 2023
Verified purchase
My wife and I have been drinking amino energy every morning for years now and we love it! Great boost of caffeine to wake up and tastes great!

Amino energy

Review by Anonymous on Apr 23, 2023
Verified purchase
Great products Great energy

Amino Energy Review

Review by Anonymous on Apr 17, 2023
Verified purchase
We LOVE the grape flavor, all time favorite. This is our go-to pre-workout supplement. Addditionaly, as a non-coffee drinker this provides the perfect later afternoon boost when you need it. We bring it with us wherever we go.

Sign up for weekly offers, news and advice

Plus 15% off your first order