In addition to its straightforward Clinical Series, Under Labz in Brazil has also introduced a new competitor in the pre-workout category this week, or actually more of a revamp and return with a supplement named Rampage. This is something the brand has had available previously, although the 2026 version looks a bit different and has a fresh new formula for fans to enjoy that focuses on performance and intensity.
Under Labz’s new Rampage keeps things short and sweet, like most pre-workouts in that part of the world, relying on a set of ingredients and dosages very similar to that of its premium competitor, the boldly named Fcking Booster. Just like that supplement, Rampage has 2g of beta-alanine for performance, arginine at a lower 2g per serving, a gram of taurine, and an equally potent 400mg of caffeine anhydrous for intense energy.
Rampage is sort of like a simpler take on Fcking Booster, where Under Labz hasn’t carried over the focus-supporting tyrosine but has maintained arginine, beta-alanine and taurine for performance, and a high level of energizing caffeine. You can get it straight from the Brazilian brand’s website at a much lower price of R$99.90 (19.92 USD) for a tub of 30 servings in your choice of Blueberry Raspberry, Lemon, and Watermelon Lemon flavors.
