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Gold Standard Whey 2.27kg - SAVE £5 with Code GSW5!


  • 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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Great work out drink

Review by Duane Kingery on Aug 1, 2022
Good pick me up before and after a work out


Review by Monica McGraw on Jul 29, 2022
I love Amino energy. The taste is great. No aftertaste - very refreshing. I drink it everyday, before and during my workout. Love the grape and fruit fusion - my personal favs!

Pick me up

Review by Steven Helman on Jul 27, 2022
This Amino Energy is the perfect pick me up when I need it. Whether it’s before the gym or just a boost of energy and Aminos. It’s a great product! Thanks ON for continuing to be my favorite nutritional supplement company!

Essential Amino Energy

Review by Scott Singley on Jul 22, 2022
Great product!

Orange flavor tastes different

Review by Anonymous on Jul 22, 2022
I've been buying amino energy in the orange flavor for about a year. My most recent order tastes totally different than usual. Normally it has a orange cream taste, but now it tastes more like Tang, and I'm not a fan. I called customer service and they said they haven't changed the formula and sent me another container, but the flavor is still different

Great taste

Review by Anonymous on Jul 17, 2022
Great taste and I love it

Good product

Review by Charita Manuphibul on Jun 29, 2022
Taste good, and make me get energy quick. Love it

Blue Raspberry is hard to drink

Review by Emma on Jun 12, 2022
I thought I might venture out from the Grape flavor that I love, so I tried Blue Raspberry. I have regrets (and a full tub of it sitting in my pantry). Either way, this product gets 5 stars for me because the Grape is so good and mixes well, plus I can choose how many scoops I want based on my energy needs!

Love This Product, BUT......

Review by Mary on Jun 3, 2022
would love the Iced Chai Tea Latte flavor to come back - nota fan on the fruit flavors. Please!!!!

Take it on daily basis

Review by John on May 29, 2022
Excellent daily commute energy intake source

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