Optimum Nutrition

Optimum Nutrition, Amino Energy + Focus, Pre-Workout, Watermelon, 1.42 lbs.

|104 ratings
Item # 990428928
Members-only price
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Return or replace anytime.
Sam's credit card
Get a $30 statement credit¹ when you open an account 9/1-9/30/26 + learn how to earn 10% back on fuel for a limited time‡ See details

Highlights

  • Contains 5 g of amino acids to support muscle recovery
  • Helps support ATP energy recycling for enhanced endurance and recovery
  • Supports muscle strength, power, and workout performance
  • Fuels explosive movements for high-intensity training and lifting
  • Net volume of 1.42 lbs, includes one container of watermelon pre-workout
We also recommend

RAW Nutrition Creatine Monohydrate Powder, Unflavored, 510g 100 Servings

RAW Nutrition Creatine Monohydrate Powder, Unflavored, 510g 100 Servings
Members-only price

RAW Nutrition Creatine Monohydrate Powder, Unflavored, 510g 100 Servings

4.5809 out of 5 stars
4.5809 out of 5 Stars. 618 reviews
Sponsored
optimum nutrition, amino energy + focus, pre-workout, watermelon, 1.42 lbs. Front-facing black tub with pink label reading 'ESSENTIAL AMIN.O. ENERGY', blue '72 servings' badge, 'Hydration + Focus', '100 mg caffeine', electrolytes and 'Watermelon Splash' flavor with watermelon wedge graphic, net 1.42 lbs; often used as a pre-workout supplement.
Optimum Nutrition, Amino Energy + Focus, Pre-Workout, Watermelon, 1.42 lbs.
Hero image 0 of Optimum Nutrition, Amino Energy + Focus, Pre-Workout, Watermelon, 1.42 lbs., 0 of 9

About this item

Product details

Boost Your Energy and Alertness

Optimum Nutrition's ESSENTIAL AMIN.O. ENERGY is your go-to solution for enhanced energy and alertness. Whether you need a kick-start for your early morning workout, an afternoon pick-me-up, or a boost for any activity in between, this product has got you covered. Each serving delivers 100 mg of caffeine from natural sources to support energy and focus, making it a perfect companion for your active lifestyle.

Essential Amino Acids and Electrolytes

Not just an energy booster, this product also provides five grams of essential BCAA amino acids and electrolytes in each serving. These ingredients support hydration, making it an excellent choice as a pre-workout powder or post-workout recovery drink. It's more than just an energy drink; it's a functional supplement designed to support your physical activities.

Sugar-Free and Delicious

With zero sugar, ESSENTIAL AMIN.O. ENERGY is a healthier alternative to sugary energy drinks. This 10.5-ounce package contains 30 servings of electrolyte powder in a delicious Watermelon Splash flavor. Enjoy the refreshing taste while reaping the benefits of this energy drink mix.

Added Electrolytes for Hydration

ESSENTIAL AMIN.O. ENERGY + ELECTROLYTES Drink Mix is enriched with potassium, sodium, and magnesium. These electrolytes help support function and fluid balance, ensuring you stay hydrated during your workouts or throughout your day. Choose from a variety of natural fruit flavors and get more out of your workout – and your day – with Amino Energy drinks!

info:
If the item details above aren't accurate or complete, we want to know about it. 

Specifications

Net volume: 1.42 lbs

Includes: One 1.42 lbs container of watermelon pre-workout

Ingredients: Vitamin D, Magnesium, Chloride, Sodium, Potassium, Amino Blend, Electrolyte Blend, Focus Blend, Natural and Artificial Flavor, Malic Acid, Citric Acid, Sucralose, Calcium Silicate, Silicon Dioxide, Gum Blend (Guar Gum, Gum Acacia, Xanthan Gum), Tartaric Acid, Beet Juice Powder (color), Sunflower and/or Soy Lecithin. Contains: Soy.

Member ratings & reviews

4.6 out of 5 stars
stars
104 ratings32 reviews
Write a review
  1. 5 stars85% (88)
  2. 4 stars5% (5)
  3. 3 stars1% (1)
  4. 2 stars3% (3)
  5. 1 star7% (7)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 32 reviews

Jan 11, 2026
Reviewer name: Freddyg32
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great flavor.

This flavor is fantastic. I also drink the tropical twist which has been discontinued and that flavor is fantastic as well. Mixes well, tastes great, loaded with amino’s and a bit of caffeine. Great stuff and a good deal at Sam’s.

Helpful?1L1Q2VE97K5S16143914183
Jun 24, 2026
Reviewer name: Suzie
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Energized and Alert

My husband and I feel energized and alert after drinking Optimum Nutrition Amino Energy. All of the flavors are grea, and the powder mixes well with both water and tea.

Helpful?1L1Q2VE97K5S16143914183
Mar 2, 2026
Reviewer name: PapillonChic
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Awesome Taste - Watermelon Jolly!

This is very easy to take - dissolves well in water, and tastes incredible, no matter if I use 64 oz of water or 16 oz. Reasonable price at Sam's. First time buyer but sold for life!

Helpful?1L1Q2VE97K5S16143914183
reply from Optimum Nutrition

That's what we like to hear!

Related pages