Does MusclePharm Assault Pre-Workout Work? Side Effects, Price

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If you searched “muscle pharm assault pre-workout” because you want to know whether it works, here is the short answer. MusclePharm’s product page says Assault is built to give you energy, focus and better performance in hard training, and its label lists the amounts behind that: 250 mg of caffeine, 3 g of creatine monohydrate and 1.75 g of beta-alanine in one scoop. Whether it works for you depends on your training, how you handle caffeine and what you expect from a drink. Reviews are mixed, and that is worth knowing before you order.

Disclosure: One link on this page is an affiliate link. If you buy through it, we may earn a commission.

What MusclePharm says Assault is for

MusclePharm describes Assault as an Energy+Strength pre-workout. The page says it is “University studied and designed for athletes” and that it “provides unmatched energy and boosts performance during intensive workouts.” It calls creatine monohydrate “one of the most studied and scientifically proven supplements for gains in Creatine Monohydrate.” It says beta-alanine “works to buffer lactic acid built up from strenuous exercise, reducing performance fatigue, and prolonging intense workouts.” An Explosive Energy & Focus blend is there to “help attack training right out of the gate.”

What is in one scoop

The Supplement Facts panel on the product page is for one scoop (11.5 g), and the tub holds 30 servings. Whether you type musclepharm assault preworkout or muscle pharm assault preworkout into a search, this is the label to check. Here are the amounts it lists.

Ingredient Amount per scoop Label group
Creatine monohydrate 3 g Strength & Performance
Beta-alanine 1.75 g Strength & Performance
Betaine anhydrous 1.5 g Strength & Performance
Taurine 1 g Muscle Fuel
L-glycine 1 g Muscle Fuel
Caffeine anhydrous 250 mg Energy & Focus
Acetyl-L-carnitine HCl 250 mg Energy & Focus
Vitamin C (ascorbic acid) 300 mg (333% Daily Value) Vitamins
Vitamin E (dl-alpha tocopheryl acetate) 36 mg (240% Daily Value) Vitamins
Vitamin B6 (pyridoxine HCl) 20 mg (1176% Daily Value) Vitamins
Vitamin B12 (methylcobalamin) 50 mcg (2083% Daily Value) Vitamins
Calcium (calcium silicate) 40 mg (3% Daily Value) Minerals

Every ingredient has its own amount on the label. The flavors listed on the page are Fruit Punch, Blue Raspberry, Watermelon, Melon Hwachae and Sour Peach Rings.

Two things on the page don’t match. A second Nutrition Facts panel on the same page is for a 17 fl. oz. drink with 40 g of protein, not this scoop. The page also has two “other ingredients” lines, one naming spirulina extract for color and the other beet juice powder. Read the label on the tub you receive.

What the research says about the main ingredients

The maker’s main research claim is about creatine. For what human studies found about creatine, including side effects and safety, read creatine benefits in our research library.

Beta-alanine is the second big claim. The page says it helps buffer lactic acid during hard work.

Caffeine is the amount most people notice. At 250 mg per scoop, one 2024 review said the caffeine level is higher than other supplements.

What results do readers report?

Reviews point in different directions, so here is the range. One reviewer rated the product like this:

Category Score out of 10
Energy 6
Pump 8
Focus 7
Taste 4
Mixability 6
Overall 6

That reviewer felt some energy, but said there were times they felt sluggish at the gym, and found the taste hard to take. A reviewer who rated it 4 out of 5 described a quick rush of energy, strong pumps and weights that felt light. The same reviewer said energy stayed high for two to three hours after the gym. A realistic expectation is one scoop before a session, with a noticeable difference for some people and little for others. Sleep, food and fluids still matter, so see post-workout recovery basics.

Side effects and who should be careful

Effect or caution Where it comes from What to do
A slight tingle The 4 out of 5 reviewer, who linked it to beta-alanine Note it if it bothers you
Energy lasting 2 to 3 hours after training The same reviewer Plan your evening around it
Diarrhea or nausea with too much vitamin The 2024 review, which warned about dosing Keep to one scoop a day
Caffeine close to bedtime The 2024 review advised against taking it within six hours of bed Take it earlier in the day
Milk, egg and soy (lecithin) The allergen line on the label Skip it if you avoid these
Possible traces of tree nuts, sesame, peanuts, fish, crustaceans, shellfish and wheat The allergen line on the label, which says it is made in a facility that may also process these Check it if you have these allergies

The label says not to exceed one serving per day.

Is a pre-workout the answer if I’m always tired?

A pre-workout is made for training sessions, and the product page talks about training, not everyday tiredness. Tiredness that keeps going is a different question. MedlinePlus on fatigue, the U.S. National Library of Medicine’s health site, says fatigue “can be a normal response to physical activity, emotional stress, boredom, or lack of sleep.” It also says “if you have been feeling tired for weeks, contact your health care provider.” The NHS tips to fight tiredness say that if tiredness is not relieved by rest and sleep, “you may have an underlying medical condition.” The NHS also says a single 15-minute walk can give you an energy boost. Penn State’s Penn State Medical Minute on fatigue notes that “poor eating habits and vitamin deficiencies can masquerade as general fatigue.” If you have felt worn out for weeks, that is the conversation to have with your health care provider.

What does it cost, and how do I order?

Product Price on the product page Size Ways to buy
MusclePharm Assault Pre-Workout $34.99 30 servings One-time purchase or subscription

Prices as of November 3, 2026; check the checkout for today’s. Prices and bundles change, so confirm the number before you pay. You can check the current price and order on the Product Page.

The page says eligible customers can pay with HSA or FSA funds through Flex, and that savings vary by person. Before you pay, ask the company for its refund and cancellation terms in writing, and read the subscription terms first if you choose a subscription.

Is MusclePharm a legit company?

For a closer look at the company, read is MusclePharm legit. It also helps to know how supplements are regulated. A 1994 report from the Government Accountability Office described the system then: “Manufacturers do not submit data to FDA to evaluate the safety of such products before marketing.” Read that as a description of how the system worked in 1994.

Could I make my own pre-workout instead?

You could buy creatine, beta-alanine, caffeine and the rest separately. That means sourcing each one, weighing 3 g of creatine and 1.75 g of beta-alanine, measuring 250 mg of caffeine, and doing it before every session. The tub does those steps for you in one scoop, with the amounts printed on its label. The harder part is keeping the habit going, so see build a workout habit that actually sticks.

How to take muscle pharm assault pre workout

Mix one scoop with 8 to 12 fl. oz. of cold water. Drink it 20 to 30 minutes before training. Do not exceed one serving per day. The label says to shake well, serve cold and refrigerate after opening. One reviewer found it needed a lot of shaking to mix, and it left blue residue in the shaker.

Before you order

  • Confirm today’s price and shipping at checkout.
  • Pick your flavor. The page lists Fruit Punch, Blue Raspberry, Watermelon, Melon Hwachae and Sour Peach Rings. Older reviews mention Strawberry Ice and green apple, which are not on the page now.
  • Read the label on the tub for the other ingredients line, since the page shows two versions.
  • Check the allergen line if you avoid milk, egg or soy.

Your next step is small: read the label on the tub you plan to buy, and decide whether one scoop before a training session fits your week.

By MakeTimeForWellness.com Wellness Team

This article is for general information purposes only and does not constitute medical advice. Consult your doctor or qualified healthcare provider before making changes to your health routine.

A quick note. Make Time For Wellness shares evidence-informed lifestyle and wellness guidance — not medical advice. We’re wellness educators, not doctors. For anything clinical or personal, please talk to a qualified healthcare provider. See our medical disclaimer.

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