Pre-Workout Powder for Improved Workouts*
Pre-Workout Formula for Energy, Focus, Strength, and Endurance*
6.6  out of 10  (86 Reviews)
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Product Overview

MusclePharm Assault. Energy + Strength.



Assault Sport recreates the pre-workout category with an exaggerated focus on strength & performance to more adequately fuel the athlete within. Anchored with Creatine Monohydrate, Assault Sport works to replenish the phosphate bond lost due to intense exercise, restoring what was once Adenosine Triphosphate (ATP) to re-energize and re-fuel your muscles allowing you to maintain your muscular endurance and increase overall energy expenditure.* Additionally, Creatine Monohydrate has the affinity for drawing excess water into the muscle cells, keeping your muscles hydrated, nourished, and full.* Alongside creatine monohydrate are Beta-Alanine and Betaine Anhydrous. Beta Alanine is known to buffer lactic acid that builds up as a result of strenuous exercise.* By reducing this build up, the body can combat muscle fatigue and extend your workout even longer.* Betaine Anhydrous can aid in improved protein synthesis.* Also featured in Assault Sport is the Muscle Fuel blend which contains L-Glycine, an amino acid, and precursor to creatine, which fights muscle degradation by boosting the body’s natural supply of creatine, as well as help deliver glucose to the muscle, and L-Taurine, which serves as the electrolyte regulator, ensuring a proper balance of electrolytes is delivered to the muscle.* Lastly, there is the Energy & Focus blend, which contains Caffeine Anhydrous, a central nervous system (CNS) stimulant that relieves drowsiness and restores mental alertness, and Acetyl-L-Carnitine, a carnitine compound known for transporting long chain fatty acids into the mitochondria to be converted as energy that also contains an acetyl group, which contributes to the production of the neurotransmitter, acetylcholine, known for improving mental focus, clarity, and the mind-muscle connection.*


  • Increased muscular endurance & strength*
  • Intense, focused energy and improved energy expenditure*
  • Delays muscle fatigue, fights muscle degradation*
  • Restores ATP levels and mental alertness*
  • Banned-substance tested
  • No proprietary Blends
We Live It. We Prove It. Banned Substance Tested. Informed Choice Approved.
Real Athlete's. Real Science.

Ratings & Reviews

Overall Rating
86 Ratings
Verified Buyer Rating
48 Ratings
Average Flavor Rating
6 Flavors
Top Rated Flavor
Cherry Limeade
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Jun 28, 2020
Verified Buyer
  • 10 Blue Raspberry
Feb 04, 2020
Verified Buyer
  • 5 Strawberry Ice

taking it 5 days (one scoop per day) and i was expected more energy and pump. Feels like nothing happen

Nov 07, 2019
  • 10 Fruit Punch

I have used this product number of times it is one of the best pre workout supplement. It give the Buzz and the edge.

Sep 24, 2019

I can feel this kick in about 10 minutes after I drink it. I’m not sure how much it helps my workouts though.

Jul 07, 2019
Verified Buyer
  • 3 Strawberry Ice

Did not do anything. No energy at all

Nov 25, 2018
Verified Buyer
  • 10 Watermelon
  • 10 Strawberry Ice
  • 6 Blue Raspberry

I have used this for several years. The formulation has varied. A few iterations ago, they removed BCAAs which I add back with nutrabio BCAA5000. I feel Assault gets a bad rep for not making people feel like they are on amphetamines. I like that it does not because there is no crash afterwards. It has a responsible amount of caffeine (monster is about 180mg, this is 250mg). Although up to 1000mg of caffeine per day is regarded as medically acceptable, in my experience, once you are taking more than 400-600mg of caffeine per day, the stimulant effect is lost, and you are drinking caffeine just to stay upright. So if you want to have a preworkout in the AM, and some coffee later in the afternoon, this is the way to go. Lastly, they have the minimal effective dose of beta alanine, though 3g would be preferred.

Sep 11, 2018
Verified Buyer
  • 10 Blue Raspberry

i have used assault since i was in the army in 2013. wake up at 430 with a water bottle, shaker and this next to my bed. i would wake up mix this beauty up and go back to bed. at about 440 i was wide awake and would jump up get dressed and head to the gym before formation. this gives a sufficient pump to last a 1hr crossfit session followed by 30m formation and another hr of pt. go to the motorpool at 9 and still feel the focus until lunch. today i use a full scoop before each workout and half scoop before school. in my opinion this preworkout is far superior for those who workout in the am and want lasting energy all day with no crash. however never take this within 6hrs of bed. you will not sleep. i repeat you will NOT sleep. i also used this to drive cross country. California to new York for a funeral. 44hrs straight with the help of this. we made it 3hrs before the wake. thank you muscle pharm. please never discontinue this product.

Aug 11, 2018
Verified Buyer
  • 10 Strawberry Ice

No “jitters” but feel energy within 10 minutes of taking. Honestly, just feel “better” within 10minutes of taking. Good focus and pump and nice feeling. I enjoy this product and fairly minimal ingredients.

Aug 10, 2018
Verified Buyer

I’ve always found this product to be bette than other common ones. I was a big fan of C4, but after a short time It wasn’t working. So, I substituted C4 with ASSAULT and it does give me more of a pump. Everyone is different but I’ve tried so many others. This one is by far the best I’ve had yet: 26 years old.

Apr 22, 2018
  • 10 Fruit Punch

A mi me gustó es muy bueno

Apr 10, 2018
  • 7 Fruit Punch

Had a great 2 hour work out... but when it came time to sleep my heart was still beating fast had to go to the emergency i couldn't sleep... still at the hospital its 5:30 AM and my heart rate just started to slow down... this is the first time i use this pre-workout.. never again !!

Feb 23, 2018
Verified Buyer

I heard they changed the formula, so my review will be for the past one as i have not tried the new one, although if they follow the same path, the product is great. I got it very cheap at bb, got the grape flavor which was amazing, mixability was a wonder. To the product itself, great pre. Clean energy and focus, got me a nice pump and ready to rock cardio. No jitters, itches or whatsoever. Hope they didn't lose their track from the previous edition.

Jan 08, 2018
  • 10 Fruit Punch

An excellent re-formulation which delivers great energy/endurance & tastes much better than the original. I liked that 1 scoop delivers adequate fuel for light-moderate workouts and 2 scoops seemed perfect for heavier/long sessions; additional pump ingredients will need to be added. I certainly recommend Assault to everyone as it provides the endurance essentials & is naturally colored!

Aug 29, 2017
Verified Buyer
  • 5 Blue Raspberry

Wasn't aware Muscle Pharm changed the formula, removed all the good stuff, and decreased the amount of caffeine per serving. Not impressed with the change at all, I won't buy Assault again and will definitely think twice before buying other Muscle Pharm products.

Jul 05, 2017
Verified Buyer

DO NOT BUY. Have used Assault for 5 years. Just got my latest order. Not only has it been "reformulated," but serving size has been reduced to cover the diminished amounts of ingredients I was buying this for. Not to worry, they increased the amount of caffeine so that you May feel better during the workout. Garbage move. Last time buying anything from muscle pharm. Very frustrating

2 Sizes
30 Servings
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Blue Raspberry
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Price: $20.24  ($0.67 / Serving)
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Pre-Workout Formula for Energy, Focus, Strength, and Endurance*

What's in MusclePharm Assault

Serving Size: 11.5 g (1 scoop)
Servings Per Container: 30
Amount Per Serving % DV
Calories 0       
Total Carbohydrate 1 g <1%*
Sugars 0 g       
Vitamin C (as Ascorbic Acid) 300 mg 500%
Vitamin E (as dl-Alpha Tocopheryl Acetate) 40 IU 133%
Vitamin B6 (as Pyridoxine HCI) 20 mg 1,000%
Vitamin B12 (as Methylcobalamin) 50 mcg 833%
Strength & Performance
Creatine Monohydrate 3 g
CarnoSyn® Beta-Alanine 1.75 g
Betaine Anhydrous 1.5 g
Muscle Fuel
Taurine 1 g
L-Glycine 1 g
Energy & Focus
Caffeine Anhydrous 250 mg
Acetyl-L-Carnitine 250 mg
* Percent Daily Values are based on a 2,000 calorie diet. †Daily Value not established.
Other Ingredients:
Citric Acid, Natural And Artificial Flavor, Calcium Silicate, Silicon Dioxide, Malic Acid, Sucralose, Fruit and Vegetable Juice (color), Acesulfame Potassium.
ALLERGEN WARNING: This product was produced in a facility that may also process ingredients containing milk, egg, soybeans, shellfish, fish, tree nuts, wheat and peanuts.

Directions For Assault: Mix one serving (1 scoop) of Assault in 8-12 fl. oz. of cold water and drink 20-30 minutes before training. Do not exceed one serving per day.

Warnings: For healthy adults 18 years of age or older ONLY. Consult with physician, if using prescription or over the counter medications, or have pre-existing conditions like: high/low blood pressure, cardiac arrhythmia, stroke, heart, liver, kidney or thyroid disease, seizure disorder, psychiatric disease, diabetes, prostate enlargement/urination issues; or if taking a Monoamine Oxidase Inhibitor or erectile dysfunction medication. Discontinue use 2 weeks prior to surgery. In case of adverse reactions, discontinue immediately and consult health professional. Contains caffeine. Do not use; with caffeine/stimulants; alcohol, nitrates, under extreme conditions of heat, sleep deprivation or dehydration. Do not exceed recommended serving or use if safety seal is broken. KEEP OUT OF REACH OF CHILDREN.

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