About this item Pre Workout in Two Stages: The world's first two-stage natural pre workout energy drink for men and women; specifically formulated to deliver clean, sustained energy, strength, endurance & pumps; steady delivery of ingredients including L-Citrulline, Beta Alanine and L-Arginine to power you through workouts of all types and all fitness levels, including weight training, cardio and home workouts. So stop wasting time & money on short-lived stimulants, guys! Get sustained, effective energy today! Tested and Trusted: Third-party tested and keto friendly preworkout supplement with exclusively premium ingredients. No banned substances; can be used for bodybuilding or any athletic event. Flavors to Love: Vintage Blast uses exclusively natural flavors of the highest quality grade to deliver award-winning sensory experiences that youҬl look forward to every time. All of our flavors are 100% vegetarian with no animal-sourced ingredients. GUARANTEED RESULTS OR YOUR MONEY BACK. Old School Labs firmly stands by the quality, effectiveness, and commitment to no proprietary blends as a brand standard. Vintage Burn Thermogenic Weight Loss, Vintage Blast Energy Pre-workout, Vintage Brawn Isolate Protein, Vintage Build Creatine & BCAA, Vintage Base Multivitamin & Probiotics as well the rest our line-up clearly display this. If you are not 100% satisfied with any OSL product, we will help you resolve your concern or provide a full refund. Old School Labs, 40 years in the making, formulated in California, and Made in the USA. Ultra-pure and clean supplements for physique perfection or life changing transformations. From pre-workouts, multivitamins, protein, to amino acids, greens, and thermogenic fat burners, we have the right supplement and nutritional solution for you. WeҲe here to answer your questions via social media or email so that you can achieve your goals the Old School way. #oldschoollabs #teamosl #iamoldschool