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Energy & Endurance by Optimum Nutrition

Keep up with the pace of your active lifestyle with energy, stamina, and endurance supplements. Whether you're looking for supplements to increase energy every day or endurance supplements to use before workouts, discover products that match your goals in the selection available at The Vitamin Shoppe. Explore supplements for more energy and improvements in stamina and endurance today.

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muscular man drinking using water bottle

Why All Bodybuilders Need
to Factor in Electrolytes

Take it from transformation expert Kris Gethin: Hydration goes hand-in-hand with muscle volume.

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ESSENTIAL AMIN.O. ENERGY – Fruit Fusion (9.5 oz./30 Servings)
(40)
$26.58
(11% off)
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ESSENTIAL AMIN.O. ENERGY – Blueberry Lemonade (9.5 oz./30 Servings)
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$26.58
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gorilla mind products

Your Trusted Destination for
Top-Quality Creatine

From fueling strength and recovery, to supporting cognition, hormonal balance, and bone health, creatine is for everyone.

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ESSENTIAL AMIN.O. ENERGY – Concord Grape (9.5 oz./30 Servings)
(46)
$26.58
(11% off)
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  • Optimum Nutrition
    ON AE RTD - Juicy Strawberry (12 Drink(S))
    ESSENTIAL AMIN.O. ENERGY + ELECTROLYTES – Sparkling Hydration
    • Essential amino acid delivery
    • Electrolyte support
    • Supports energy, focus, and muscle recovery
    • Caffeine derived from natural sources
    • Juicy Strawberry flavor

    Looking for the perfect pre-workout boost or anytime pick-me-up? ESSENTIAL AMIN.O. ENERGY + ELECTROLYTES by Optimum Nutrition supports muscle recovery before, during, and after exercise with 5g of micronized free-form amino acids. BONUS: it’s got 100mg of caffeine for energy and electrolytes to help replenish what’s lost with sweat.

    Frequently Asked Questions

    What are essential amino acids?

    Essential amino acids (EAAs) are amino acids that your body can’t produce enough of on its own, including leucine, isoleucine, valine, histidine, lysine, methionine, phenylalanine, threonine, and tryptophan. EAAs support muscle growth and recovery.

    What are micronized free-form amino acids?

    Micronized free-form amino acids are single amino acids that are already in a pre-digested form for faster absorption by the body.

    Rated 4 stars out of 5 stars, From 18 customer reviews
    $29.99
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Find Energy & Endurance by Optimum Nutrition at The Vitamin Shoppe Store Near You

There are over 600 The Vitamin Shoppe® stores across the US, so it's very likely you can pop in and find Energy & Endurance by Optimum Nutrition locally. Check out our store locator to find a shoppe near you. Don’t forget about saving 10% on every subscription with Auto Delivery to help you stay on the path and never miss a thing, plus: Free Shipping!* You define what better looks (and feels) like—Count on us to help you get there.


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    Orders under $35, domestic shipping is only $6.99. Find more at our Shipping Policy page.

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    Shop with confidence with our Easy Returns Policy. Customers may return any opened or unopened merchandise purchased from any Vitamin Shoppe channel to any Vitamin Shoppe store within 30 days. Find more at our full Returns Policy page.

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