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      5.0/ 5
      Vintage Burst™ X
      Stronger, faster, harder
      Peak circulation and power
      Supplement facts
      Top rated
      The OSL standard
      How to use Burst X
      Join OSL!
      5.0/ 5

      Energy, Pumps & Vascularity

      1 OSL Point for every $1
      Free Shipping from $85
      Money-Back Guarantee
      Secure Shopping
      Description

      Burst X™ is the next generation in the Burst series of nitric oxide-boosting and pump-enhancing pre-workout formulas. Packed with clinically proven doses of S7™ and HydroNOx™, Burst X™ delivers on-demand pumps with easy-to-take capsules, providing peak performance whether you’re inside or outside the gym.

      Benefits
      • Massive Muscle Pumps
      • Endless Stamina & Energy
      • Faster Recovery, Fewer Aches
      • 150 Veggie Capsules | 30 Servings
      • 100% Vegan
      How To Use

      Take 1 serving (5 capsules) 30 minutes before your workout.

      Pro Tip: For incredible workouts, stack with Vintage Blast™ pre-workout.

      Do not take more than 1 serving within 3 hours.

      Features Why Our Product Recommended FAQ Reviews

      Your strength, Backed by Science

      CLINICALLY-STUDIED INGREDIENTS
      THIRD-PARTY CERTIFIED FACTORIES
      ONLY THE BEST QUALITY
      MANUFACTURED IN THE U.S.A

      Over 50,000 happy customers

      BUILT ON REAL SCIENCE. DIALED FOR PERFORMANCE.

      We worked with researchers and third-party specialists to validate the dose that supports strength, power, and consistency in training.

      This formula delivers:

      2000
      mg
      HydroNOx™ Citrulline HCl
      500
      mg
      Agmatine Sulfate
      100
      mg
      S7™ Plant-Based Antioxidant Blend

      Over 50,000 happy customers

      Built better.

      Get the OSL Advantage.

      Features
      Vintage Burst™ X
      Old School Labs
      OSL
      Other Brands
      Other
      2.3× Stronger Nitric Oxide Output with S7™
      HydroNOx™ Technology for Faster Blood Flow
      Two-Stage Caffeine for Smooth, Sustained Energy
      Electrolyte Matrix for Hydration & Muscle Function
      No Artificial Dyes or Fillers

      Over 50,000 happy customers

      Got questions?

      Can I use Vintage Burst™ X as a pre-workout?

      Yes yoiu can. For more energy and pumps, stack it with our two-stage pre-workout, Vintage Blast™, which is designed to help you take full advantage of your workouts.

      Can I take Vintage Burst™ X on the same days I take other Old School Labs™ products?

      Yes. Just make sure the total amount of caffeine you are taking from all sources doesn’t exceed your tolerance. For example, if you tolerate 400 mg (about 3 cups of coffee) or less of caffeine daily, make sure that you don’t exceed this amount.

      Can I change my shipping address after placing an order?

      You can change your shipping address only if your order is still being processed.

      Contact us immediately if you wish to do so.

      I received the wrong item or my order is missing an item. What do I do?

      Contact us immediately. Make sure to include the email address you used for checkout, your full name, and your order number.

      Our customer service representatives will not rest until you get the right product(s) as quickly as possible. They will also guide you through the steps of exchanging or returning the wrong item(s).

      How can I change my payment method?

      You can change your add or remove payment methods by logging in to your account.

      What are your shipping options and do you ship Internationally?

      Shipping Options:
      U.S. Shipping
      We offer a variety of shipping options to suit your needs:
      Standard shipping (typically 3-5 business days) is free for all orders over $85
      Expedited shipping (typically 1-3 business days)*
      * Expedited shipping is not available for Alaska, Hawaii, and military addresses (AA, AE, AP).

      Please note that orders placed after 5pm Eastern may be processed the next day. Some merchandise items ship separately and may take a few more days to fulfill.

      International Shipping
      We currently ship to these countries:

      AFRICA: Egypt, Algeria, Ghana, Morocco, Senegal, South Africa, Tunisia, Zimbabwe
      EUROPE: France, Austria, Georgia, Germany, Albania, Andorra, Armenia, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Faroe Islands, Finland, Gibraltar, Greece, Greenland, Guadeloupe, Guernsey, Vatican City, Hungary, Iceland, Ireland, Italy, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Mayotte, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Réunion, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, United Kingdom
      ASIA: Bahrain, Kuwait, Lebanon, Qatar, Saudi Arabia, United Arab Emirates, Azerbaijan, China, India, Japan, Jordan, Kazakhstan, Malaysia, Maldives, Philippines, Singapore, South Korea, Taiwan, Thailand, Uzbekistan
      AMERICA: Canada, Argentina, Brazil, Chile, Colombia, Ecuador, Mexico, Paraguay, Peru, Uruguay
      Australia
      New Zealand

      How do I track my Order?
      How do I cancel my order?

      To cancel a recent order, contact us by email or live chat with your name and order number.

      Orders typically ship within 24 hours. We cannot cancel them once they do.

      Do you offer Returns or Refunds?

      We want you to experience all our products, and to keep taking those that fit your goals. This is why our products are backed by our uncompromising 100% Money Back Guarantee and hassle-free returns policy. Buy any product, and in the unlikely event you’re not completely satisfied with your order, please contact our Customer Service team and we’ll process your refund promptly.
      *The first bottle of each and every product is protected by our hassle-free guarantee. For orders containing multiple bottles of the same product: physical return of the sealed, un-opened bottles is required for a refund.

      Forgot Password

      You do not need to use a password with Old School Labs.

      Simply go to account page, enter your email address, and we will then send you a one-time code to that email.

      If you are still having problems, please contact us.

      Login Issues

      Follow these steps if you are facing login issues:
      Check if the CAPS lock and NUM lock buttons are pressed on your keyboard
      If you have multiple email addresses, make sure you enter the correct e-mail and password combination for this site
      If your browser has an auto-complete function, make sure it is filling the correct e-mail address for Old School Labs
      Clear your browser’s cache and cookies and try again
      You can reset you password by clicking on Forgot? in the account page.

      If you are still having problems, please contact us.

      Manage Susbcriptions

      Please login to manage your subscription https://shop.oldschoollabs.com/apps/retextion/login

      Change Address

      To change your billing or shipping address, go to your account, click on 'Addresses' at the top of the page, then edit or delete the address you want.

      To change the shipping address for a recent order, contact us with your order number.

      Please note that orders typically ship within 24 hours. We will not be able to change your address once they do.

      Accepted Payment Methods

      We accept the following payment methods:

      Credit Card
      We accept Visa, MasterCard, American Express, Discover, JCB, and Diners Club credit and debit cards.

      We adhere to strict industry standards for payment processing, including:
      128-bit Secure Sockets Layer (SSL) technology for secure Internet Protocol (IP) transactions. Industry leading encryption hardware and software methods and security protocols to protect customer information. Compliance with the Payment Card Industry Data Security Standard (PCI DSS).

      Other Payment Methods
      We also accept payments through PayPal, Shop Pay, Apple Pay*, and Google Pay.
      *Apple Pay is supported on the iPhone, Apple Watch, iPad, and Mac.

      Storage Guidelines & Warnings

      Storing your supplements properly ensures they remain potent and effective. Every bottle and container of Old School Labs™ products is filled with uncompromisingly premium ingredients and comes with an expiry date clearly printed at the bottom.

      General Guidelines
      You should store vitamins and supplements in a cool and dry place.
      Make sure they are sealed tight after using them and placed out of the reach of children.
      Never mix supplements from one bottle with another.