Product Name | HEALTH_PERSONAL_CARE |
---|---|
Additives | caffeine, Vitamin C |
Allergen Information | Contains: Soy |
Weight | 270 g |
Volume | 270 Millilitres |
Units | 270.0 gram |
Storage Instructions | In a cool, dry place |
Serving Recommendation | 2 tablespoons |
Manufacturer contact | 4 Waterside, Dublin 24, Ireland |
Country of origin | gb |
Brand | Optimum Nutrition |
Format | Powder |
Age Range Description | Adult |
Country of origin | United Kingdom |
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Optimum Nutrition Amino Energy Pre Workout Powder, Energy Drink with Amino Acids, BCAA, L-Glutamine and L-Leucine, Food Supplement with Vitamin C and Caffeine, Lemon Lime Flavour, 30 Servings, 270 g
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Purchase options and add-ons
Brand | Optimum Nutrition |
Flavour | Lemon Lime |
Primary supplement type | Vitamin C |
Unit count | 270.0 gram |
Item form | Powder |
Item weight | 0.27 Kilograms |
Item dimensions L x W x H | 9.4 x 9.4 x 16.7 centimetres |
Special ingredients | caffeine, Vitamin C |
Product benefits | Muscle Growth |
Age range (description) | Adult |
About this item
- A caffeine-infused ANYTIME-ENERGY drink*, a ready-to-mix powder alternative to carbonated beverages, flavoured waters, coffee and teas
- With 5 g of amino acids per serving, including BCAA, L-Glutamine and L-Leucine, plus 100 g of natural caffeine and vitamin C to help BOOST YOUR ENERGY AND FOCUS*
- Pre-workout powder designed for fitness lovers and professional athletes to support your exercise and workout regime
- ON low-calorie food supplement with zero sugar designed for those leading an active lifestyle to improve diet and overall nutrition
- Sports drink in 6 great tasting varieties, so you don’t have to sacrifice excellent flavour to get the boost you crave
- *Vitamin C contributes to normal energy-yielding metabolism. Caffeine contributes to increased alertness and improved concentration. Source: COMMISSION REGULATION (EU) No 432/2012 of 16 May 2012; EFSA Journal 2011;9(4):2054 24
Top Brand
Optimum Nutrition

94% positive ratings from 5K+ customers

100K+ recent orders from this brand
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Important information
Safety Information:
To be used in the framework of a varied and balanced diet and a healthy lifestyle. Food supplements are not to be used as a substitute for a varied diet. Do not exceed recommended daily dose. Keep out of reach of children.High caffeine content (100 mg / serving). Not recommended for children or pregnant or breastfeeding women.
Ingredients:
Amino Acid Blend (L-Glutamine, L-Leucine, Taurine, L-Arginine, L-Isoleucine, L-Valine, Beta-Alanine, L-Tyrosine, L-Histidine, L-Lysine Hydrochloride, Emulsifier: Sunflower Lecithin), Acids (Citric Acid, Malic Acid, L(+)-Tartaric Acid), Flavouring, Colour (Curcumin), Inulin, Sweeteners (Sucralose, Acesulfame K), Thickeners (Sodium Carboxy Methyl Cellulose, Xanthan Gum, Carrageenan), Anti-Caking Agents (Silicon Dioxide, Calcium Silicate), Green Tea Extract (Camellia sinensis, leaf), Natural Caffeine, Spirulina Powder, L-Ascorbic Acid, Green Coffee Extract (Coffea arabica L., fruit).
Directions:
Add 2 level scoops (9 g) to 330 ml (11 oz) of cold water and mix until powder is completely dissolved. Recommended consumption of 1 serving per day, either before, during or after your workout
Legal Disclaimer
As with all supplementation, please consult your doctor before commencing use of this product. This product is not to be used by persons with a pre-existing medical condition, or those taking medication. This product is not intended for use by persons under the age of 18.
Product description
Product Description
Discover Optimum Nutrition Essential Amin.O. Energy, a ready-to-mix amino acid food supplement powder, designed to boost your energy and focus* before your workout or throughout the day. ON amino acids supplements are scientifically proven to support your energy needs and long-term training. This pre-workout powder is packed with 5 g of micronised amino acids per serving (such as L-Glutamine, L-Leucine, and L-Arginine and BCAAs among others) and supports your daily amino acid intake. Each great-tasting sports drink gives you the edge. It contains green tea and green coffee extracts, plus it provides you with 100 mg of caffeine from natural sources and, thus, contributes to increased alertness and improved concentration.* ON sports drinks are also a source of Vitamin C, which contributes to normal energy-yielding metabolism and supports your immune system.* Plus, its low-calorie count and zero sugar make it a viable alternative to beverages such as cola and coffee. The amino energy food supplement is designed for everyone: from those just starting on their path to leading a healthier lifestyle to athletes, hard-working students, professionals and fitness lovers. Optimum Nutrition Essential AminO Energy is a tasty pick-me-up that doesn’t break the bank and can be enjoyed at any time and anywhere; at home, on the go, or at the gym. Choose between six great tasting options: Fruit Fusion, Lemon Lime, Orange Cooler, Pineapple, Strawberry Lime, or Watermelon. Simply add 2 level scoops (9 g) to 330 ml of cold water, mix, and serve.
Ingredients
Amino Acid Blend (L-Glutamine, L-Leucine, Taurine, L-Arginine, L-Isoleucine, L-Valine, Beta-Alanine, L-Tyrosine, L-Histidine, L-Lysine Hydrochloride, Emulsifier: Sunflower Lecithin), Acids (Citric Acid, Malic Acid, L(+)-Tartaric Acid), Flavouring, Colour (Curcumin), Inulin, Sweeteners (Sucralose, Acesulfame K), Thickeners (Sodium Carboxy Methyl Cellulose, Xanthan Gum, Carrageenan), Anti-Caking Agents (Silicon Dioxide, Calcium Silicate), Green Tea Extract (Camellia sinensis, leaf), Natural Caffeine, Spirulina Powder, L-Ascorbic Acid, Green Coffee Extract (Coffea arabica L., fruit).
Directions
Add 2 level scoops (9 g) to 330 ml (11 oz) of cold water and mix until powder is completely dissolved. Recommended consumption of 1 serving per day, either before, during or after your workout
Safety Warning
To be used in the framework of a varied and balanced diet and a healthy lifestyle. Food supplements are not to be used as a substitute for a varied diet. Do not exceed recommended daily dose. Keep out of reach of children.High caffeine content (100 mg / serving). Not recommended for children or pregnant or breastfeeding women.
Legal Disclaimer
As with all supplementation, please consult your doctor before commencing use of this product. This product is not to be used by persons with a pre-existing medical condition, or those taking medication. This product is not intended for use by persons under the age of 18.
Box Contains
Amino Energy 270g
1x serving scoop
Manufacturer Contact Information
4 Waterside, Dublin 24, Ireland
From the manufacturer


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The label looks different compared to the previous one I got, is it still the same OPTIMUM NUTRITION product?
As you evolve, so do we. The part of our mission is to help active individuals better understand OPTIMUM NUTRITION products. Now choosing the right product for you is easier with more visible product benefits, features and flavours on each tub.
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Why the pack is smaller compared to the previous one I got?
We changed the size of a pack to better fit your expectations. Now the tub is smaller, but the number of servings stayed the same.
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Are the ingredients tested and safe?
All of the ingredients in our products have been approved and considered safe for consumption by the European Food Safety Authority.
![]() AMIN.O. Energy | ![]() Serious Mass | ![]() Gold Standard 100% Whey | ![]() Gold Standard 100% Casein | ![]() Gold Standard Pre-Workout | |
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Customer Reviews
|
4.5 out of 5 stars 5,438
|
4.4 out of 5 stars 40,871
|
4.6 out of 5 stars 131,990
|
4.4 out of 5 stars 13,886
|
4.4 out of 5 stars 16,457
|
Price
| £17.95£17.95 | £28.30£28.30 | £35.00£35.00 | £36.95£36.95 | £19.95£19.95 |
When to use
| Before workout | After training | After or before training | Before bed | Before training |
Key benefits
| Energy & focus | Mass gain | Muscle support & repair | Muscle support & repair | Energy, power & performance |
Key features
| Amino acids | High calorie powder | High protein & low sugar | Slow digesting protein | Naturally sourced caffeine |
Nutritional info
| 5mg of amino acids / serv. | 1250 calories / serv. | 24g of protein / serv. | 24g of micellar casein / serv. | 175mg of caffeine / serv. |
Available sizes
| 270g | 6lb, 12lb | 1lb, 2lb, 5lb, 10lb | 1lb, 2lb, 4lb | 330g |
Product information
Technical Details
General Information
Additional Information
ASIN | B00TH3LDJS |
---|---|
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank |
|
Date First Available | 31 Jan. 2015 |
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Optimum Nutrition Amino Energy Pre Workout Powder, Energy Drink with Amino Acids, BCAA, L-Glutamine and L-Leucine, Food Supplement with Vitamin C and Caffeine, Lemon Lime Flavour, 30 Servings, 270 g
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Product details
- Is discontinued by manufacturer : No
- Product Dimensions : 9.4 x 9.4 x 16.7 cm; 270 g
- Manufacturer : Optimum Nutrition
- ASIN : B00TH3LDJS
- Item model number : 1102193
- Country of origin : United Kingdom
- Customer reviews:
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers love this pre-workout powder's taste, particularly noting it's not too sweet, and appreciate its quality and effectiveness. The product provides energy and focus, with one customer mentioning it helps maintain fitness levels, while another notes it wakes them up for morning gym sessions. Moreover, the caffeine content is well-balanced with amino acids, and customers find it easy to mix in water. Additionally, they value the product's ability to eliminate jittery feelings and enhance training focus.
AI Generated from the text of customer reviews
Customers love the taste of this pre-workout powder, finding it not too sweet and appreciating the variety of flavors available, with one customer noting it blends well with crushed ice.
"Great pre-workout product! It tastes refreshing and gives a noticeable energy boost without jitters...." Read more
"Great taste amino acid drink" Read more
"...It is perfectly fine to drink and it is not in any way horrible to taste but I just think I would have enjoyed other flavours more...." Read more
"I love this item. The taste is fake, but I honestly don't mind it all." Read more
Customers find this pre-workout supplement to be excellent and effective, with one customer noting it's perfect for everyday use.
"Amazing, I have lots of energy and endurance during workout" Read more
"...where I have taken it with me to the gym I've felt great and worked harder, right up until the point I'm violently sick, but that's more likely my..." Read more
"I'm drinking a lot less coffee thanks to this. Amazing product gives me a clean buzz to tackle the day unlike the jittery effects of a pre-workout." Read more
"One of the best product in the industry" Read more
Customers find the pre-workout supplement effective, noting it provides energy and focus, helps maintain fitness levels, and wakes them up for morning gym sessions.
"Great pre-workout product! It tastes refreshing and gives a noticeable energy boost without jitters...." Read more
"Amazing, I have lots of energy and endurance during workout" Read more
"Fit For Purpose I bought this product to give me an extra kick of energy at the end of a long day at work before going to the gym as I..." Read more
"...a pre training, help me to perform better with focus and recover my muscles afterwards." Read more
Customers appreciate the caffeine content in this pre-workout powder, noting it provides a good amount with amino acids, and one customer mentions it contains vitamin C.
"...Packed with amino acids and vitamin C, it helps with both focus and recovery. Perfect for workouts!" Read more
"...It is perfectly fine to drink and it is not in any way horrible to taste but I just think I would have enjoyed other flavours more...." Read more
"...The caffeine isn't high enough and it's missing essential amino acids and ingredients I would expect to see in a pre-workout...." Read more
"...smaller dose before a night out, enjoying this product as a great alternative to coffee...." Read more
Customers find the supplement to be a great value for money.
"...Delivery was fast & free. Value for money Great for the money as you only need a small scoop per serving so this will last for..." Read more
"Good flavour, mix well. It's a little out of my budget but it's worth it since it's an amino and pre-workout" Read more
"...mixes very well • good value for money • no performance boost • basically all it is amino’s with creatine...." Read more
"...the product and it gives you a great energy boost and it is a cheaper then pre workout if you up the scoops...." Read more
Customers report that the pre-workout supplement helps eliminate jitteriness and provides a pleasant buzz during cardio and lifting sessions.
"...It tastes refreshing and gives a noticeable energy boost without jitters...." Read more
"Love the taste and it does seem to give me a little buzz while I’m working out...." Read more
"...stomach, 15 mins later i could feel the beta alanine buzz, i had a pleasant buzz giving me that extra energy for weighted circuits followed by some..." Read more
"...Amazing product gives me a clean buzz to tackle the day unlike the jittery effects of a pre-workout." Read more
Customers find that the supplement mixes well, particularly noting that it dissolves easily in water.
"Good flavour, mix well. It's a little out of my budget but it's worth it since it's an amino and pre-workout" Read more
"...flavour not bad acceptable let’s say. • mixes very well • good value for money • no performance boost •..." Read more
"...It mixes easily and tastes delicious. I definitely recommend this for anyone who wants that extra boost for a training session" Read more
"...It also mixes very easily as does all optimum nutrition products...." Read more
Customers report improved focus during training.
"...Packed with amino acids and vitamin C, it helps with both focus and recovery. Perfect for workouts!" Read more
"I use it like a pre training, help me to perform better with focus and recover my muscles afterwards." Read more
"...But does subtly help with focus." Read more
"...delivers 100mg caffeine to help increase alertness and focus throughout your day, as well as essential amino acids...." Read more
Reviews with images

Good stuff
Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 3 November 2024Flavour Name: OrangeVerified PurchaseGreat pre-workout product! It tastes refreshing and gives a noticeable energy boost without jitters. Packed with amino acids and vitamin C, it helps with both focus and recovery. Perfect for workouts!
- Reviewed in the United Kingdom on 23 May 2025Flavour Name: OrangeVerified PurchaseAmazing, I have lots of energy and endurance during workout
- Reviewed in the United Kingdom on 10 January 2025Flavour Name: Fruit FusionVerified PurchaseGreat taste amino acid drink
- Reviewed in the United Kingdom on 1 April 2025Good
- Reviewed in the United Kingdom on 7 April 2025Flavour Name: Fruit FusionVerified PurchaseBeen using this product for over 5 years now and absolutely love them.
- Reviewed in the United Kingdom on 3 June 2025I love this item. The taste is fake, but I honestly don't mind it all.
- Reviewed in the United Kingdom on 29 July 2016Flavour Name: OrangeVerified PurchaseFit For Purpose
I bought this product to give me an extra kick of energy at the end of a long day at work before going to the gym as I often feel tired/drained after working all day. I opted for optimum nutrition because I am aware that it is a good brand. I have never had a pre workout before so I didn't want to spend too much money which is why I went for the orange flavour (it was one of the cheaper flavours at the time). I think this was a mistake on my part because I am not too keen on this flavour at all which has put me off using it too often. It is perfectly fine to drink and it is not in any way horrible to taste but I just think I would have enjoyed other flavours more. As for its effects as a pre workout, I am not wholly convinced. I do not feel as though it really gives me any more energy than a piece of fruit or a strong green tea. My boyfriend has suggested having it first thing in the morning before having eaten anything else as he thinks it is more effective on an empty stomach! So at the moment the jury is still out on this I am afraid.
Packaging
Came extremely well packaged to prevent any damage to the product.
Delivery
Delivery was fast & free.
Value for money
Great for the money as you only need a small scoop per serving so this will last for ages! I think my boyfriend's lasts him over 3 months & he has it 5-6 times per week.
Will I purchase again?
Not sure yet but if I do I will try another flavour.
Please hit 'Yes' if you found this review helpful :)
- Reviewed in the United Kingdom on 16 March 2025I fill my gallon water bottle and put in 2 heaped table spoons (or 3 if I'm tired!), keeps me firing on all cylinders all day
Top reviews from other countries
- JaylynneReviewed in the United States on 4 July 2017
5.0 out of 5 stars Five Stars
Great product have order it three times use it every time I work out
-
Cliente AmazonReviewed in Italy on 25 May 2025
5.0 out of 5 stars Ottimo
Ottimo prodotto
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Kiki SunshineReviewed in Germany on 28 February 2016
5.0 out of 5 stars Wirkung passt, für mich ein Nachkaufprodukt
Ich bin begeistert, morgens vergesse ich manchmal auf meine Kaffee, weil das hier enthaltene Koffein mich schon ausreichend pusht. Der Geschmack 'Ananas' ist auch in Ordnung. Ich trinke täglich 1 Scoop und bin zufrieden mit der Wirkung. Werde Amino Energy auf jeden Fall wieder bestellen, aber evtl. ein paar andere Geschmacksrichtungen testen.
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SilvioReviewed in Italy on 22 May 2025
5.0 out of 5 stars Ottimo prodotto
Flavour Name: Lemon LimeVerified PurchaseOttimo prodotto, lo acquisto spesso ormai da anni
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Oksana MilzReviewed in Germany on 6 June 2025
5.0 out of 5 stars Qualität
Flavour Name: Fruit FusionVerified Purchasetolles Produkt
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