Pre-Workout Powder for Improved Workouts
Pre-Workout Formula for Improved Endurance Performance, Alertness and Concentration
6.7  out of 10  (81 Reviews)
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Product Overview


focus. endurance. performance.

the athletes pre-workout

  • increased endurance performance
  • enhances: focus, alertness, & concentration
  • free of fillers & artificial dyes*





certified sport


banned substance free!


a truly complete

athletic performance

pre-workout system.

it's more than energy.

it's really performance.

Ratings & Reviews

Overall Rating
81 Ratings
Verified Buyer Rating
45 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.
Nov 25, 2018
Verified Buyer

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

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

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

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

Jun 25, 2017
Verified Buyer

I was expecting more out of the Green Apple, you mostly taste the water since the taste of the apple doesn't last long. When I mixed this up with my BCAAs watermelon I taste more of the watermelon than apple. I would try a different flavor than this next time.

Jun 02, 2017
Verified Buyer

Do not buy!!! Use to be the only product I would buy! They reformulated this year and this product is horrible. They also got rid of all of the flavours. They usually have good flavours and the strawberry ice is pretty decent. But it's a waste of money to buy this product. Will never buy again. Even tried the black assault and it's no good either. Time to try what everyone else has to offer again.

May 23, 2017
  • 8 Fruit Punch

I used it and I thought it worked ok the first time. In a short amount of time I found that I did not feel it kicking in anymore. I personally would try a different pre-workout.

May 21, 2017
Verified Buyer

This is a very good focus preworkout. Perfect for if you need to cycle off of something that gives you the jitters. I loved the focus it gave me and the pump

May 18, 2017
Verified Buyer
  • 6 Fruit Punch

For those of you looking for a pre-workout that doesn't give you the jitters this is it. I have tried so many pre-workouts and found that I really don't like the feeling some of them give you. This one does exactly what it says, focus, energy, drive. I would recommend this product.

1 Size
30 Servings
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4 Flavors
Blue Raspberry
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Price: £22.99  (£0.77 / Serving)
Flavor Rating: 5.7

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 1 scoop of ASSAULT™ in 8-12 oz. (236-354 mL) of water 20-30 minutes before training. For optimal results, drink a minimum of 1 gallon of water daily.


This product is only intended for use by healthy adults over 18 years of age. Do not take this product with alcohol. Do not take this product with any product containing caffeine or other ingredients that have a known stimulant effect. Consult your physician before using this product if you are taking any prescription or over-the-counter medications or supplements. Food supplements should not be used as a substitute for a varied diet. Do not use this product if you are pregnant, expect to become pregnant or are nursing. Do not use this product if you are at risk or are being treated for any medical condition including, but not limited to: high or low blood pressure; cardiac arrhythmia; stroke; heart, liver, kidney or thyroid disease; seizure disorder; psychiatric disease; diabetes; difficulty urinating due to prostate enlargement or if you are taking a MAO inhibitor. Discontinue use and consult your health care professional if you experience any adverse reaction to this product. Do not exceed recommended serving size or suggested use. KEEP OUT OF REACH OF CHILDREN.


Beneficial effects from caffeine are obtained with caffeine consumption at doses of 4 mg/kg body weight at least one hour prior to exercise and only if any other caffeine consumption is avoided for at least 12 hours prior to consumption of the product in habitual caffeine consumers. Not recommended to exceed 300mg of caffeine within 24 hours.

* 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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