Pre-Workout Powder

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  • Pre-Workout Powder
  • Pre-Workout Powder
  • Pre-Workout Powder
  • Pre-Workout Powder
  • Pre-Workout Powder
  • Pre-Workout Powder
  • Pre-Workout Powder


Muscle Empire Pre-Workout is a multi-supplement powder with Nitric Oxide and Energy boosting ingredients coupled with vitamins, minerals, and herbal compounds promoting optimal performance per serving. Pre-Workout is available in multiple sizes, caffeinated/caffeine-free variations, and flavors such as Blue Raspberry and Fruit Punch.

Pre-Workout is formulated to provide the most compact blend of essential pump building and energy driving supplements available on the market. Our easy to read supplement facts do not contain any proprietary blends or hidden supplements.†

Experience your best pump with this blend of L-Citrulline DL-Malate, Beta-Alanine, and L-Arginine AKG. Maximizing your Nitric Oxide (NO) production to high levels while giving you all the focus and endurance you need to shred muscle.†


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Directions & Allergens

Suggested Use: 

Take one serving (2 scoops) mixed with 6 - 8 ounces of water 15 - 30 minutes prior to exercise. Do not exceed the suggested use.


This product contains no Soy, Dairy, Dairy byproducts, Eggs, Fish, Shellfish, Wheat, Gluten, Tree Nuts, or Sesame Seeds.


This is a NON-GMO ingredient manufactured using organic starting ingredients.


Store in a cool, dry place. Re-seal top immediately after use to preserve freshness.

Instant COA


Instant COA

Another HR Supplements exclusive is the “Instant COA” (Certificate of Analysis). We are building a customer facing interface that will allow you to view product COA's on any mobile device. Simply scan the Quick Response (QR) code on the HR Supplements product label and instantly view the lab reports.

Please note this is an ongoing effort. We produce hundreds of products and we keep COA’s, lab sheets, production reports and other internal records forever. It will take time to convert all of them. Meanwhile, for archived COA's please click here to request a copy.



Statements & Warnings

† These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any diseases.

Caution: Be careful! This product contains CAFFEINE and can be dangerous if abused. do not exceed a total daily intake of 400mg including but not limited to beverages and other supplements. Failure to follow safety guidelines can result in serious injury and/or death.

Keep out of the reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions and/or taking prescription drug(s) or OTC medication(s). Always consult with a qualified health physician before taking any new dietary supplement.

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2 Reviews

  • 5
    pick me up carry me thru juice

    Posted by Beth Baugh on 23rd May 2019

    Every gym buddy I let try this has ordered it. Works.

  • 5
    As good if not better than the rest!

    Posted by Daniel Finn on 4th Mar 2017

    I've been using the C4 from GNC and this product is just as good if not better and much more cost effective.

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