If you want a caffeinated pre-workout with creatine already in the mix, MusclePharm Assault is built for that, and you get 250 mg of caffeine per scoop. MusclePharm says it is designed for energy, focus and strength during training. The product page shows $34.99 for 30 servings, about $1.17 a serving, as of November 3, 2026. The formula pairs creatine monohydrate with beta-alanine, betaine, taurine, glycine and acetyl-L-carnitine. For creatine, see our Creatine Benefits: Human Studies, Side Effects and Safety (our research library) page.
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| What it is | Pre-workout powder, 30 servings per tub |
| Flavors | Fruit Punch, Blue Raspberry, Watermelon, Melon Hwachae, Sour Peach Rings |
| Who sells it | MusclePharm, on its own product page |
| Price as shown | $34.99 for 30 servings |
| Returns or guarantee | Check the returns terms on the MusclePharm site before you order |
| Product Page | Where to Buy |
What is MusclePharm Assault Pre-Workout, and who is it for?
MusclePharm Assault Pre-Workout is a powder you mix into cold water and drink before training. The seller calls it “Assault™ Energy+Strength” and describes it as “University studied and designed for athletes.” Also searched as musclepharm assault preworkout, it is the same tub. We haven’t tested this tub, so what follows comes from the seller’s pages, the label and named reviews.
The seller says the product “provides unmatched energy and boosts performance during intensive workouts.” If you train hard and want a caffeinated pre-workout with creatine already in the mix, this is the kind of product the seller built for that job.
What does MusclePharm say it does, and how is it supposed to work?
MusclePharm groups the formula into three blends and describes what each one is for.
- Strength & Performance: creatine monohydrate, beta-alanine and betaine. The seller says beta-alanine “works to buffer lactic acid built up from strenuous exercise, reducing performance fatigue, and prolonging intense workouts.”
- Muscle Fuel: taurine and L-glycine.
- Energy & Focus: caffeine and acetyl-L-carnitine, which the seller pairs as an “Explosive Energy & Focus blend to help attack training right out of the gate.”
The seller’s design is one scoop taken before training.
How the label says to use it
The label says to mix one scoop in 8 to 12 fl. oz. of cold water and drink it 20 to 30 minutes before training. It also says not to exceed one serving per day.
What is in MusclePharm Assault? Ingredients and amounts per scoop
The Supplement Facts panel uses one scoop, 11.5 g, as its serving. These are the labeled amounts.
| Ingredient | Amount per scoop (as labeled) | Blend on the label |
|---|---|---|
| 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 (as ascorbic acid) | 300 mg (333% Daily Value) | Vitamins and minerals |
| Vitamin E (as dl-alpha tocopheryl acetate) | 36 mg (240% Daily Value) | Vitamins and minerals |
| Vitamin B6 (as pyridoxine HCl) | 20 mg (1,176% Daily Value) | Vitamins and minerals |
| Vitamin B12 (as methylcobalamin) | 50 mcg (2,083% Daily Value) | Vitamins and minerals |
| Calcium (as calcium silicate) | 40 mg (3% Daily Value) | Vitamins and minerals |
The label marks Daily Value percentages as based on a 2,000 calorie diet, and says Daily Value is not established for the blend ingredients.
What does the research say about these ingredients?
Creatine is the ingredient the seller highlights most. The Creatine Benefits: Human Studies, Side Effects and Safety page in our research library covers creatine human studies, side effects and safety in general.
For caffeine, the NHS explains that “Caffeine is a stimulant which means it makes you feel more awake.” Healthline lists research on caffeine and sleep quality, citing a 2018 study by O’Callaghan and colleagues.
For beta-alanine, betaine, taurine, L-glycine and acetyl-L-carnitine, ask MusclePharm which studies it relies on before you order.
How much does MusclePharm Assault cost, and what is the total commitment?
| Package | Servings | Price as shown | Price per serving |
|---|---|---|---|
| Single tub (five flavors listed) | 30 | $34.99 | About $1.17 ($34.99 ÷ 30) |
Prices as of November 3, 2026; check the checkout for today’s. The product page offers a one-time purchase or a subscription, and it also offers HSA/FSA payment through Flex for eligible customers. Read the subscription terms at checkout before you choose that option.
The sale-price box on the product page still shows placeholder text and mentions an ExpertVoice discount in two different ways, so confirm the price and any discount at checkout. Older reviews quote other numbers: one reviewer lists $69.99 retail and $29.99 at BodyBuilding.com, and a 2017 Fitness Deal News review cites $26.99 for 30 servings. Those are not current prices, so use the price at checkout.
What are the refund, return and cancellation terms?
Check the returns terms on the MusclePharm site before you order. Work through these steps before you confirm:
- Find the returns terms on the MusclePharm site and read the refund window.
- If you choose the subscription option, find out how to cancel it before you confirm the order.
- Save your order confirmation so you have the details if you need to contact the seller.
What are the side effects of MusclePharm Assault, and who should be careful?
The main safety point is the caffeine. The label lists 250 mg per scoop, and the NHS notes that caffeine “can also disrupt your usual sleep rhythms” and that its effects “can last up to 7 hours,” so timing matters. MedlinePlus lists too much caffeine among lifestyle causes of fatigue, noting it “can keep you from getting a good night’s sleep.”
| Point | What the source says |
|---|---|
| Caffeine, 250 mg per scoop | Labeled amount. The label says not to exceed one serving per day. |
| Sleep (NHS) | Caffeine can “disrupt your usual sleep rhythms,” and its effects “can last up to 7 hours.” |
| Sleep (MedlinePlus) | Too much caffeine “can keep you from getting a good night’s sleep.” |
| Allergens (label) | Contains milk, egg and soy (lecithin). Made in a facility that may also process tree nuts, sesame, peanuts, fish, crustaceans, shellfish and wheat products. |
Who is MusclePharm Assault for?
The seller presents the product for athletes and people who train hard. If you are sensitive to caffeine, or you have a milk, egg or soy allergy, check the label first, since it lists those allergens.
Is MusclePharm Assault Pre-Workout legit, or is it a scam?
The product page is on musclepharm.com and names MusclePharm as the seller. It offers a standard checkout and a guest checkout, and it lists HSA/FSA payment through Flex, which says “Flex is available for eligible customers.” The Flex disclosures are linked from the page.
Reviews differ in tone. One reviewer wrote, “This stuff is legit,” and called MusclePharm “a great company.” A 2017 Fitness Deal News review said the taste “may be a bit underwhelming” and that flavor choice matters.
To protect yourself, check the returns terms, keep your order confirmation, and confirm that the seller on your checkout page is MusclePharm. If you buy from another retailer, such as BodyBuilding.com, which one reviewer named, check that retailer’s returns terms too, because they are separate from MusclePharm’s.
How does it compare with doing it yourself, or doing nothing?
| Option | What you get | Trade-off |
|---|---|---|
| MusclePharm Assault Pre-Workout | Caffeine, creatine, beta-alanine, betaine, taurine, L-glycine and acetyl-L-carnitine in one scoop mixed with cold water | The amounts are set for you, but you can’t change one ingredient without the others. |
| Creatine on its own | Creatine without the caffeine blend | You lose the energy and focus blend. Compare options with crazy nutrition crn-5 creatine and Bettervits Creatine vs Optimum Nutrition. |
| Buying each ingredient yourself | Full control over each amount | You source, weigh and remember each ingredient every session. |
| Doing nothing | No supplement, no added caffeine | The NHS lists regular meals every 3 to 4 hours, regular exercise and good sleep among steps that help tiredness. |
The tub is the done-for-you version of the DIY route: the amounts are set, measured and packaged, so you don’t have to source and weigh each ingredient. For more on training fuel and recovery, see Muscle Recovery and Supplements.
Why am I always so tired, and does a pre-workout help?
Why am I always so tired even though I sleep a lot?
Healthline’s list of causes notes that “Nutrient deficiencies may lead you to feel exhausted on a daily basis, even if you’re getting more than 7 hours of sleep.” Cleveland Clinic’s fatigue guide says “Certain sleep disorders can cause long-term exhaustion and extreme fatigue,” including sleep apnea and insomnia.
MedlinePlus has more on fatigue if it keeps dragging down your training.
What am I lacking if I’m always tired?
Healthline lists iron, several B vitamins, vitamin D, vitamin C and magnesium among the nutrients linked to fatigue. Cleveland Clinic says anemia and vitamin deficiencies such as vitamin D or B12 are often responsible, and a provider may order blood tests to check levels. A pre-workout is labeled for a training session, not for finding out why you are tired.
What to check before you order
When you’re ready to look at the tub, the Product Page is where to confirm these points.
- Returns terms on the MusclePharm site, including the refund window.
- The price at checkout. The sale-price box shows placeholder text, and the discount wording conflicts.
- The serving count. The product page lists 30 servings, and one reviewer wrote 32, so check the tub.
- The serving size. One reviewer described a serving as half a scoop; the label says one scoop, 11.5 g.
- The color ingredient. The product page lists spirulina extract in one ingredient list and beet juice powder in another, so check the tub label.
- The note about supplement facts. The page says supplement facts are not available for one variant, so ask which flavor that covers.
- Flavors. A 2017 post mentions Strawberry Ice, which is not on the current flavor list.
- Subscription terms, if you consider that option.
- Third-party testing. If it matters to you, ask MusclePharm which lab tested the product and for the results.
- Studies for the non-creatine ingredients, as covered above.
Some links on this page are affiliate links. Buying through them may earn us a commission at no extra cost to you.
By the Gym Floor Guide Editorial Team