#1 Best Overall
Transparent Labs
BULK Pre-Workout
8.5Excellent
A fully transparent, Informed Choice-certified pre-workout with 8 g citrulline malate, 4 g beta-alanine and a moderate 200 mg of natural caffeine.
Informed Choice
5 videos$1.67/serving
Category
Pre-Workout
Caffeine, citrulline and beta-alanine: what works, what's hype, how to dose
- Products scored
- 8
- Average score
- 7.9
- Video reviews
- 25
Top picks
Our favorite pre-workout
#2
Legion
Pulse Pre-Workout
8.3Good
Fully dosed and naturally sweetened: 8 g citrulline malate, 3.6 g beta-alanine and a hefty 350 mg of caffeine balanced by 350 mg of L-theanine.
3rd-party testedcGMP
3 videos$2.50/serving
#3
Gorilla Mind
Gorilla Mode Pre-Workout
8.2Good
One of the most heavily dosed pre-workouts: per scoop 5 g citrulline, 2.5 g creatine and 200 mg caffeine, doubling to 400 mg caffeine at the 2-scoop max.
3rd-party tested
3 videos$1.50/serving
The essentials
What to know about pre-workout
Pre-workout supplements are powders or drinks taken 15–60 minutes before training to increase energy, focus, endurance and "pump". Almost all are built around caffeine, often combined with beta-alanine, citrulline, betaine, creatine and nootropics such as L-tyrosine or alpha-GPC.
Caffeine carries most of the evidence. The International Society of Sports Nutrition concludes that 3–6 mg per kg of body weight consistently improves many kinds of exercise performance, from muscular endurance to sprinting, although responses vary between people. Beta-alanine helps high-intensity efforts lasting roughly one to four minutes, but only when taken daily (about 4–6 g) for several weeks; the tingling it causes is harmless. Evidence for citrulline is weaker: a 2026 meta-analysis of 30 trials found only a small, uncertain benefit from citrulline malate.
That makes the most important label details the caffeine dose, whether key ingredients reach researched amounts, and whether doses are hidden in proprietary blends. Pre-workouts suit healthy adults who train hard and tolerate stimulants, but they are not required for results. Anyone who is pregnant, under 18, sensitive to caffeine or taking medications should be cautious.
Every product
All pre-workout we’ve reviewed
8 products
Best Overall
Transparent Labs
BULK Pre-Workout
8.5Excellent
A fully transparent, Informed Choice-certified pre-workout with 8 g citrulline malate, 4 g beta-alanine and a moderate 200 mg of natural caffeine.
Informed Choice
5 videos$1.67/serving
Legion
Pulse Pre-Workout
8.3Good
Fully dosed and naturally sweetened: 8 g citrulline malate, 3.6 g beta-alanine and a hefty 350 mg of caffeine balanced by 350 mg of L-theanine.
3rd-party testedcGMP
3 videos$2.50/serving
Gorilla Mind
Gorilla Mode Pre-Workout
8.2Good
One of the most heavily dosed pre-workouts: per scoop 5 g citrulline, 2.5 g creatine and 200 mg caffeine, doubling to 400 mg caffeine at the 2-scoop max.
3rd-party tested
3 videos$1.50/serving
8.2Good
A fully disclosed, clinically dosed pre-workout (300 mg caffeine, 6 g citrulline, 3.2 g beta-alanine) wrapped in GHOST's popular licensed candy flavors.
3 videos Shop$1.50/serving
8.1Good
An Informed Sport-certified, vegan pre-workout with 274 mg natural caffeine and 6.5 g citrulline, though its beta-alanine and creatine are under-dosed.
Informed Sport
2 videos$2.25/serving
Best Value
RYSE
Loaded Pre
7.9Good
A TikTok Shop best-seller with solid citrulline and beta-alanine doses and licensed candy flavors, but caffeine ranges from 300 to 390 mg by flavor.
2 videos Shop$1.33/serving
Trending
Alani Nu
Pre-Workout
7.5Good
A flavor-first, beginner-friendly pre-workout with 200 mg caffeine and 200 mg L-theanine; its pump and endurance ingredients are lightly dosed.
3 videos$1.33/serving
Cellucor
C4 Original Pre-Workout
6.8Mixed
America's best-known budget pre-workout: 200 mg caffeine and great flavors, but beta-alanine, citrulline and creatine all sit below research doses.
4 videos$1.17/serving
Buying guide
How to choose pre-workout
The five things we look at first — and what they mean for you.
- 01
Start with the caffeine number
Most pre-workouts contain 150–400 mg of caffeine per serving, and some reach more with a second scoop. Research supports roughly 3–6 mg per kg of body weight, which is about 200–400 mg for a 70 kg adult. Count coffee and energy drinks too: the FDA cites about 400 mg a day as an amount not generally associated with negative effects in healthy adults.
- 02
Compare doses with the research
Check each active ingredient against studied amounts: beta-alanine around 3.2–6.4 g daily, citrulline malate 6–8 g (or roughly 3–6 g of pure L-citrulline), betaine about 2.5 g and creatine 3–5 g per day. Many popular products include these ingredients at a fraction of those doses, which looks impressive on the front of the tub but does little in the gym.
- 03
Avoid proprietary blends
A proprietary blend lists one total weight for several ingredients without showing each dose. That makes it impossible to judge whether the formula is effective, and it often hides small amounts of expensive ingredients. Many brands now disclose every dose on the label; if a product doesn't, treat that as a meaningful strike against it.
- 04
Look for independent testing
Supplements are not approved by the FDA before they are sold, so third-party testing matters, especially for drug-tested athletes. Look for NSF Certified for Sport or Informed Sport and Informed Choice, then confirm the exact product on the certifier's website. Published certificates of analysis are a useful extra, but they are not a banned-substance certification.
- 05
Judge cost per effective serving
A $30 tub can be worse value than a $50 one if its doses are too small to matter or if you need two scoops to reach an effective amount. Divide the price by servings, then adjust for how many scoops you actually use and whether key ingredients are fully dosed. Flavor and sweeteners matter too, since you will drink it several times a week.
Head to head
Popular comparisons
Ingredients
Compare by ingredient
Video reviews
What creators say about pre-workout
Frequently asked questions
Key sources
- International Society of Sports Nutrition position stand: caffeine and exercise performance (J Int Soc Sports Nutr, 2021)
- International Society of Sports Nutrition position stand: Beta-Alanine (J Int Soc Sports Nutr, 2015)
- Effects of Citrulline Malate Supplementation on Exercise Performance: A Systematic Review and Three-Level Meta-Analysis (Nutrients, 2026)
- FDA: Spilling the Beans: How Much Caffeine is Too Much?
Do pre-workouts actually work?
The caffeine in them does: research consistently shows that caffeine improves strength, endurance and power for many people, and it also sharpens alertness. Other ingredients vary. Beta-alanine helps high-intensity efforts with daily use, while evidence for citrulline and most nootropic add-ins is weaker. A well-dosed pre-workout can help you train harder, but it won't replace sleep, food or a good program.
How much caffeine is too much in a pre-workout?
The FDA cites about 400 mg a day as an amount not generally associated with negative effects in healthy adults, and that total includes coffee, tea and energy drinks. Many pre-workouts contain 200–400 mg per serving, so one scoop can use most of that budget. Start with half a serving, avoid stacking stimulants, and leave several hours between your last dose and bedtime.
Why does pre-workout make my skin tingle?
The pins-and-needles feeling, called paresthesia, is caused by beta-alanine. It is harmless and usually fades within an hour. The International Society of Sports Nutrition notes that splitting beta-alanine into smaller doses or using a sustained-release form reduces it. If it bothers you, try half a scoop or choose a product with less beta-alanine.
Should I take pre-workout every day?
You can, but it is often unnecessary. Beta-alanine and creatine work through daily saturation, whereas caffeine's benefit is immediate and tolerance builds with daily use. Many lifters save stimulant pre-workouts for demanding sessions, use a stimulant-free product or plain creatine on other days, and take periodic breaks from caffeine. Always stay within your daily caffeine limit.
Who should avoid pre-workout supplements?
People who are pregnant or breastfeeding, under 18, sensitive to caffeine, or living with heart conditions, high blood pressure, anxiety or sleep problems should avoid stimulant pre-workouts or talk to a clinician first. Ingredients can also interact with medications, including stimulants and some antidepressants. Drug-tested athletes should only use products certified by NSF or Informed Sport.
Learn
Go deeper
Guides 12 min read
How to Read a Supplement Facts Label Like an Expert
Serving sizes, %DV vs. upper limits, ingredient forms, proprietary blends and claims: a step-by-step method for reading any Supplement Facts panel with confidence.
Nutrition Reviews Editorial Team · Sep 28, 2026
Science Explained 9 min read
Pre-Workout Ingredients That Work (and the Ones That Don't)
Caffeine dosing by body weight, plus what research says about creatine, beta-alanine, citrulline, nitrates, tyrosine, proprietary blends and stimulant safety.
Nutrition Reviews Editorial Team · Sep 28, 2026
Safety 9 min read
Third-Party Testing Explained: NSF vs. Informed Sport vs. USP
What USP, NSF and Informed Sport seals actually test, how to verify a certification in two minutes, how to read a certificate of analysis, and where testing stops.
Nutrition Reviews Editorial Team · Sep 28, 2026