Cellucor C4 Original Pre-Workout – 60 Servings

We offer a variety of sports supplements, including muscle-building products, pre-workout formulas, post-exercise recovery items, vitamins and minerals, amino acids, and more.

We focus on premium, specialist and high-performance supplements, including products and brands that are difficult to find in mainstream retail. Our range is selected for experienced users who want more than standard off-the-shelf formulas.

All our supplements are sourced from reputable manufacturers and undergo rigorous quality control to ensure safety and efficacy. However, we recommend consulting a healthcare professional before starting any new supplement regimen.

Yes. Much of our range is for experienced supplement users looking for advanced, high-strength, specialist formulas. Always check the label, serving size and product information before use.

Yes. If you are unsure what to choose, contact our team and tell us your goal, previous experience and what type of product you are looking for. We can help you narrow down the most suitable options from our range.

Yes. Cross The Limits specialises in hard-to-find, specialist and selected exclusive brands. We are the official UK distributor or exclusive partner for ranges including Koka Labz, Revange Nutrition, Helvetix Pharma, X-lab, Core Labs, and Neuro AMPS, as well as other premium performance brands.

Our range is constantly updated with new launches, restocks, and specialist products not commonly available through mainstream retailers.

Start with your goal, experience level and stimulant tolerance. Our categories make it easier to compare products for performance, energy, focus, recovery, fat loss and general support.

Placing an order with Cross The Limits is quick and simple. Browse our products, add your chosen items to the basket, and proceed to checkout. Enter your delivery details and choose a payment method available for your country and order.

Depending on your location and eligibility, payment options may include credit/debit card, Klarna, Open Banking, bank transfer, Pay by Link, or other available methods shown at checkout.

Once you place your order, you will receive an order confirmation email.

We ship throughout the UK, Europe and internationally. We normally process orders on working days, and delivery times depend on the destination and shipping method selected at checkout. We dispatch UK orders using available tracked courier services, while we may ship EU orders through our consolidated EU delivery route. International delivery options vary by country. We provide tracking details once the parcel has been dispatched or scanned by the courier. Delivery times shown at checkout are estimates and may vary during busy periods or due to courier delays.

For full delivery times, shipping costs and country-specific information, please refer to our Shipping Policy page.

Yes. Once we dispatch your order, you’ll receive tracking details by email. For EU orders, tracking may activate only after the parcel reaches our EU hub and DPD scans it.

Yes, we occasionally run discounts and special promotions across selected products. Follow us on Instagram, Facebook and Reddit for the latest offers, product updates, new releases and expert supplement knowledge from Cross The Limits.

Absolutely! Our team of experts is here to help. Contact us via our website, and we will provide personalised recommendations tailored to your fitness goals and dietary needs.

We offer a selection of vegan—and vegetarian-friendly supplements. For specific information, please check the product descriptions or use the filter options on our website to find suitable products.

Please email our customer support team at info@crossthelimits.co.uk or speak directly to our AI bot assistant. We aim to respond to all inquiries within 24 hours.

Yes. We offer wholesale accounts for retailers, gyms and supplement stores in the UK and Europe. Contact our wholesale team at wholesale@crossthelimits.co.uk or apply for a B2B account to access trade pricing, bulk orders and selected exclusive brands.

If your order shows “Order Failed”, the payment was not completed successfully. Your bank may still show the amount as pending, but this is usually released automatically within a few business days.

You can try placing the order again using the same or a different payment method.

If your card was not accepted when placing an order, please try using a different card or select an alternative payment gateway from the list on the payment page after placing your order.

First, you’ll need to register for an account with our store to earn your points. Our points system lets you earn points on every purchase. For every £1 spent on our website, you earn 1 point. For every 100 points, you get £1 in store credit.

For example, if you order £100, you will earn 100 points (equivalent to £1), which you can redeem on your next order.

The best hardcore pre-workout depends on your experience, stimulant tolerance and training goals. Cross The Limits stocks a specialist range of high-stim and advanced pre-workout formulas for experienced users, including products from Koka Labz, Dark Labs, UPS Labs, Panda Supplements, God Status Labz and other leading performance brands

Our range includes specialist and high-performance brands such as Koka Labz, Dark Labs, God Status Labz, Apollon Nutrition, and other established hardcore supplement brands. Availability changes regularly as new formulas and limited releases arrive.

Cross The Limits is a UK specialist retailer and distributor focused on hardcore, high-performance and difficult-to-find supplements. We stock pre workouts, fat burners, nootropics, performance products and selected exclusive brands from our UK warehouse.

Yes. A major part of the Cross The Limits range features specialist, niche, hard-to-find supplements that mainstream retailers rarely stock. We also carry selected exclusive and limited-distribution brands.

We work with supplement stores, gyms, fitness businesses, online retailers and other approved trade customers across the UK and Europe.

Yes. We supply wholesale customers across the UK and Europe, with shipping options depending on destination and order size.

Yes. Our wholesale range includes selected exclusive and specialist brands, including Koka Labz, Revange Nutrition, Core Labs, Helvetix Pharma, Viking Labs and Neuro AMPS, alongside other high-demand performance products.

Trade pricing is available through our B2B platform, and larger or repeat orders may qualify for additional commercial terms depending on the products and volume.

Contact our wholesale team at wholesale@crossthelimits.co.uk or apply for a B2B account. Once approved, you’ll receive access to wholesale pricing, stock availability and trade ordering.

We specialise in high-demand, hard-to-find, performance-focused supplements, with direct UK stock, exclusive brands, competitive trade pricing, and fast fulfilment for approved wholesale customers.

If you’d like to return an item, please contact us first. We accept returns of unopened and unused products in line with our Returns Policy.

For hygiene and safety reasons, you generally cannot return opened or used supplements unless the product is faulty or there is an issue with the order.

Contact our customer service team with your order number and the reason for the return. We’ll provide the next steps and return instructions.

Returns must be requested within the period stated in our Returns Policy. Products must be unopened, unused and returned in their original condition.

Once we receive and check your return, we’ll process your refund. The time it takes to appear in your account depends on your payment provider or bank.

If the return is required because of an error on our side, we will cover the return and replacement costs where applicable. For standard returns or change-of-mind returns, return shipping is normally the customer’s responsibility. We review each case individually and will confirm next steps after reviewing the details.

If your order hasn’t entered processing or dispatch yet, contact us as soon as possible. We’ll do our best to stop it before shipment, but we can’t always guarantee it.

If the issue is our fault, please contact us with your order number and photos where needed. We’ll review the case and arrange the appropriate solution. In many cases, if we sent the wrong product, we may allow you to keep it and send the correct item separately. The final resolution depends on the individual case.

If your order failed but your bank still shows a pending payment, your bank is usually holding the funds temporarily. In most cases, your bank releases the pending amount automatically within a few business days.

Please check your spam or junk folder first. If you still cannot find the confirmation, contact us with the name and email address used for the order, and we’ll check it for you.

Tracking may not update immediately after dispatch. For EU orders, tracking only becomes active once the parcel reaches our EU hub and is scanned by DPD.

Contact us as soon as possible. If we haven’t processed or dispatched your order yet, we may be able to update the address. Once the parcel has entered the courier network, changes may no longer be possible.

Some promotions cannot be combined, and certain payment methods may not accept promotional discount codes. Please check the offer conditions or choose another available payment method.

First, use the password reset option on the login page. If you still cannot access your account, contact our team and we’ll help you resolve the issue.

We recommend logging in before you start shopping. When you are logged in, we can show you the correct account pricing, loyalty benefits, order history and any customer-only offers or sections available to your account. You can also earn loyalty points on eligible purchases and track your previous orders more easily.

Some products are visible on our website but cannot be purchased from every country. Availability can depend on your delivery location, local restrictions and the product category. If you see a “not available in your country” or similar message, we cannot ship that particular product to the selected destination.

We automatically adjust product availability depending on the delivery country and customer location. Some products can be supplied to certain markets but not others, so two customers in different countries may see different purchasing options.