Best Pre-Workout
The best pre-workout for most people is Kaged Sport: an outside lab tests every batch for banned substances, it has 188 mg of caffeine, and it costs $1.25 a serving. For the full doses used in studies, buy Transparent Labs Bulk.
By Erin Rose Updated October 22, 2026 How we score
Costs are brand prices per serving, checked October 23, 2026.
Our pick for: Most people
- Testing list
- Informed SportEvery batch tested for banned substances
- Caffeine
- 188 mgUnder half of the 400 mg a day the FDA cites for adults
- L-citrulline
- 3.5 gFor blood flow
- Beta-alanine
- 1.6 gStudies used 4 to 6 g a day
- A serving
- $1.25Brand price; Amazon’s can differ
- Tub we link
- 20 servings1 scoop
Why we pick it It costs the least a serving of the pre-workouts here that an outside lab tests for banned substances and that print every amount on the label. Its 188 mg of caffeine gives a lift without the 300 mg or more some tubs pack into one serving.
What you give up Its 1.6 g of beta-alanine is below the 4 to 6 g a day studies used, and it has no creatine. C4 Sport is also tested and costs less, but hides its creatine and beta-alanine amounts in a blend.
Which one is right for you?
Most pre-workouts mix caffeine with two or three ingredients for blood flow and endurance. We compare what you can check: caffeine, the amounts against the doses studies used, outside testing, and cost a serving.
Want the doses used in studies?
Transparent Labs Bulk has 8 g of citrulline malate, 4 g of beta-alanine and 2.5 g of betaine in one scoop, with 200 mg of caffeine. Its citrulline malate and beta-alanine match the amounts used in the studies below. The catch: it is on no testing list we read. Legion Pulse is close, with 8 g of citrulline malate, 3.6 g of beta-alanine and 350 mg of caffeine in two scoops, at $2.50 a serving.
Transparent Labs Bulk
$1.67 a serving · 200 mg caffeine · 30 servings
Want the lowest cost on a testing list?
C4 Sport is on NSF Certified for Sport and costs $0.73 a serving, the least of the tested ones here. It has 135 mg of caffeine. The catch: its creatine and beta-alanine sit in a 4.9 g blend, so you cannot see how much you get, and it has no citrulline.
C4 Sport
$0.73 a serving · 135 mg caffeine · 30 servings
Sensitive to caffeine, or training in the evening?
The FDA cites 400 mg a day as an amount not usually linked to harm in healthy adults. 2 of the 6 tubs here hold 300 mg or more in one serving, so count your coffee and energy drinks too. In one study, 400 mg of caffeine taken 6 hours before bed still cut into sleep (Drake 2013). Start with half a scoop. If you are pregnant, have a heart condition or take medicine, ask your doctor first.
Pre-workouts we compared
We chose 6 pre-workouts that sell well on Amazon, read each label in the NIH label database, and checked them against four testing lists. Our pick is first, then the ones on a testing list, then the rest, cheaper first.
| Product | A serving | Why it is or is not a pick |
|---|---|---|
| Kaged Sport188 mg caffeine | $1.25 | Our pick: Informed Sport, every amount shown, 188 mg caffeine |
| C4 Sport135 mg caffeine | $0.73 | On NSF Certified for Sport; hides its creatine and beta-alanine in a blend; no citrulline |
| Alani Nu200 mg caffeine | $1.33 | 6 g citrulline malate, 1.6 g beta-alanine, 200 mg caffeine; on no testing list we read |
| GHOST Legend300 mg caffeine | $1.50 | 6 g L-citrulline, 3.2 g beta-alanine; 300 mg caffeine; on no testing list we read |
| Transparent Labs Bulk200 mg caffeine | $1.67 | Study doses of citrulline malate and beta-alanine; on no testing list we read |
| Legion Pulse350 mg caffeine | $2.50 | 8 g citrulline malate, 3.6 g beta-alanine; 350 mg caffeine in 2 scoops; its lab test comes from Labdoor, which brands pay |
Does pre-workout work?
Caffeine is the best-studied part. A sports nutrition review found caffeine helps strength, sprints and endurance at 3 to 6 mg per kg of body weight, most often taken about an hour before (Guest 2021). For a 150 lb person, that is about 200 to 400 mg.
Citrulline malate at 6 to 8 g, taken 40 to 60 minutes before lifting, added about 3 reps to a set to failure, a small effect (Vårvik 2021). Beta-alanine works over weeks, not in one dose: 4 to 6 g a day for 2 to 4 weeks helped hard efforts lasting 1 to 4 minutes (Trexler 2015). Read more on citrulline and beta-alanine.
Mixed pre-workouts may help endurance and mood before a workout. Most safety studies lasted under 8 weeks (Harty 2018).
How to read the label
Check three things. First, caffeine per scoop, and whether a serving is one scoop or two. Second, whether every ingredient has an amount. A "blend" hides how much you get. Third, a testing list. Sports supplements can carry banned substances, on purpose or by accident (Harty 2018). NSF Certified for Sport and Informed Sport test for them. NSF/ANSI 173 checks that the label is right.
Questions people ask
Why does pre-workout make my skin tingle?
That is the beta-alanine. Tingling is the only side effect studies report, and smaller doses spread through the day cause less of it (Trexler 2015).
Do I still need creatine?
No pre-workout here lists a full scoop of creatine. Creatine works by building up in muscle with daily use, so take it every day, not just before a workout. See the best creatine.
Sources
- Guest NS, et al. “International society of sports nutrition position stand: caffeine and exercise performance.” J Int Soc Sports Nutr. 2021. PubMed 33388079
- Vårvik FT, et al. “Acute Effect of Citrulline Malate on Repetition Performance During Strength Training: A Systematic Review and Meta-Analysis.” Int J Sport Nutr Exerc Metab. 2021. PubMed 34010809
- Trexler ET, et al. “International society of sports nutrition position stand: Beta-Alanine.” J Int Soc Sports Nutr. 2015. PubMed 26175657
- Harty PS, et al. “Multi-ingredient pre-workout supplements, safety implications, and performance outcomes: a brief review.” J Int Soc Sports Nutr. 2018. PubMed 30089501
- Drake C, et al. “Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed.” J Clin Sleep Med. 2013. PubMed 24235903
- US Food and Drug Administration. “Spilling the Beans: How Much Caffeine is Too Much?” fda.gov
- Labels: NIH Dietary Supplement Label Database, one label per product (our pick’s label). Testing lists: NSF Certified for Sport, NSF/ANSI 173 and Informed Sport.