Your cart is empty Not sure what to choose?
Check promotions

USP Labs JACK3D NEW 2-amino VERSION

from £41.96

Earn up to 42 Points.

In stock

Orders placed before 4 pm are shipped on the same day

Free shipping: UK over £89, EU over £150
Secure Card Payments
visa master gpay apay
Pay later with Klarna - interest free
14-Day Returns

Jack3d: Legendary pre-workout for unparalleled performance

USP LABS Jack3d is the latest version of the famous Jack3d pre-workout. This is the legendary pre-workout supplement, in which valued geranium was used as the first on the market. Its considerable potency made it one of the most popular products in the world. It contains the most effective ingredients from each category and is responsible for entirely different parameters during training. USP Labs Jack3D is a multi-component product, one of the best pre-workout boosters.

Key ingredients for energy, strength, and fat reduction

The unique formula makes it highly effective. Therefore, it supports the best athletes in their daily workouts. The supplement works exceptionally quickly; you can feel its effect after a few minutes. Ingredients with a stimulating and pumping effect effectively increase motivation and training energy. The addition of Aphrodyne will additionally reduce your body fat even from resistant places such as the abdomen, lower back, thighs, and buttocks.

Ingredients


Arginine Alpha-Ketoglutarate


forms nitric oxide and thus can dilate blood vessels, allowing better blood supply to muscles and soft tissues. It indirectly participates in the synthesis of cGMP, which, along with ATP, engages in muscle contraction and has anabolic effects. It affects growth hormone secretion, supports liver regeneration, and is an essential precursor for creatine. Unfortunately, the traditional form of Arginine breaks down quickly in the stomach. Thus, a small amount reaches its destination.

Creatine Monohydrate


a molecule of creatine and a molecule of water combined in one molecule is the best-tested form of creatine for energy, strength, and muscle mass. Thanks to the highest quality micronizing, it is much more completely absorbed than a traditional monohydrate, significantly increasing strength and muscle mass. Creatine performs essential functions in the athlete’s body, taking part in energy processes and creating and maintaining an anabolic environment conducive to muscle growth. It participates in the transport and reconstruction of ATP. ATP acts as an energy carrier in our body. Without it, the course of most reactions, ranging from simple syntheses to muscle contraction, would be impossible. Due to the ability to bind phosphate groups (then transforms into phosphocreatine), creatine participates in the transport above and the construction of ATP.

Beta-Alanine


is a non-protein amino acid formed in the liver during uracil degradation. Essential in the synthesis of pantothenic acid, anserine, and carnosine. Improvement in sports results is primarily seen in the action of carnosine ( -alanyl-L-histidine). Production limits the availability of beta-alanine, whose synthesis is enhanced by the outside administration of said beta-amino acid. Carnosine, by accelerating the removal of hydrogen ions from the body, reduces acidification of the body. In addition, its antioxidant effect reduces lipid peroxidation and the adverse effects of excessive amounts of singlet oxygen, superoxide, and transition metals. This protects the body’s structures against degradation and supports the proper occurrence of biochemical changes.

Caffeine


has a thermogenic effect and suppresses appetite thanks to the increased production of adrenaline and noradrenaline. In addition, it has been proven to increase the formation of neurotransmitters in the central nervous system, such as dopamine, acetylcholine, or even serotonin, which exerts a stimulating effect and improves cognitive function. Thus, the overall development of caffeine in the body allows you to maintain the effectiveness of training and a positive mood, despite the calorie deficit.

2-Aminoisoheptane HCL


is a stimulant with other names, such as 2-amino or Octodrine. 2-amino works as a bronchodilator, which increases our aerobic capacity. In addition, it has decongestant activity (narrowing blood vessels, causing an increase in oxygen flow rate), does not cause stupidity, and sharpens the senses, which could not always be experienced with dmaa.

Geranium Extract


is a powerful stimulant. It stimulates the process of reducing body fat and helps to increase the intensity of training. It works great both as a stimulant and as a fat burner, especially in combination with caffeine and other substances that stimulate the nervous system and intensify the phenomenon of thermogenesis. This vital active substance effectively provides intense stimulation. It indirectly increases adrenaline levels in the body and directly activates adrenergic receptors. As a result, it substantially increases energy, motivation, and concentration. Combined with caffeine, its effectiveness increases. After penetrating the nervous system, the geranium stimulates the release of dopamine, which provides focus and a good mood, which is crucial during training.

Aphrodyne Extract


is a substance that helps fight the so-called refractory adipose tissue, mainly located in the chest and lower waist area in men and hips, buttocks, and thighs in women. Aphrodyne works by blocking 2 receptors, which facilitates slimming and helps carve slimming-resistant body parts. It is worth remembering that the effect of Aphrodyne effectively reduces insulin. So taking this compound around carbohydrate meals is pointless. Aphrodyne is particularly effective when used on an empty stomach before exercise.

Schisandra Chinensis


ha has a strengthening effect on the body, supports liver function, and cleanses accumulated toxins. It positively impacts the heart, brain, lungs, and kidneys. In addition, it speeds up metabolism, which prevents the accumulation of unnecessary fat.

Usage


1-2 servings 30 minutes before a workout.

Disclaimer


This product is a dietary supplement and should not be used as a substitute for a varied diet. Do not exceed the recommended daily dose. Keep out of reach of children. If you are pregnant, nursing, taking medication, or have a medical condition, consult your healthcare professional before use. This product contains Aphrodyne and may cause side effects such as increased heart rate, anxiety, or elevated blood pressure. Use with caution and discontinue use if any adverse reactions occur. Store in a cool, dry place away from direct sunlight. The Food and Drug Administration or any other governmental authority has not evaluated the statements made here. This product is not intended to diagnose, treat, cure, or prevent any disease.

No product reviews yet — add the first one!

Need help?

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.

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.

Choosing the right supplement depends on your fitness goals, dietary needs, and any existing health conditions. Our product descriptions provide detailed information to help you make an informed decision. Contact our customer support team for personalised advice if you need more clarification.

Placing an order is simple. Please browse our products, add the items you’d like to your cart, and proceed to checkout. You can pay using credit or debit cards, Klarna, or LayBuy.

We offer both domestic and international shipping. Orders are typically processed within 1-2 business days; however, shipping times may vary by location. For detailed information, please refer to our Shipping Policy page.

Once your order is shipped, you will receive a confirmation email with a tracking number. You can use this number to track your order on the carrier’s website.

We offer a carrier ‘s-day return policy for unopened and unused products. If you are unsatisfied with your purchase, please contact our customer support team to initiate a return. For more details, please visit our Return Policy page.

Yes, we regularly offer discounts and promotions on various products. Sign up for our newsletter or follow us on social media to stay updated on the latest deals.

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.

We offer wholesale options for gyms, fitness centres, and retailers. For more information, please contact our wholesale department at wholesale@crossthelimits.co.uk.

Your order still needs to be completed” Our payment”gateway most likely did not accept your card. In such cases, the bank often holds the funds as “pending, ” which should be returned to your account within three business days.

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.

We dispatch parcels to the EU every Friday. Your order must be placed by 10 AM on Friday to be included in that week’s shipment. If you order earlier in the week (e.g. on Sunday), your parcel will stay in the UK until Thursday, when it is transferred to our EU fulfilment centre. Once it arrives (usually within 5-7 days), we will send it via DPD, and you will receive your tracking details via email. Please note that the journey from the UK to the EU warehouse does not include tracking—tracking is only provided once your parcel is dispatched from the EU warehouse.

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.

Yes! You can pay for your supplements using Bitcoin (BTC), Ethereum (ETH), USDT, and many other cryptocurrencies via our secure payment partner, NOWPayments.

To ensure reliable delivery and avoid customs issues, all UK orders are shipped via a consolidated weekly route to our EU hub.

This method guarantees:

  • No customs delays
  • No VAT or duty on delivery
  • One fixed shipping fee (£15)

Orders placed after Friday may be included in the following dispatch window.

Delivery time can be up to 2–2.5 weeks, depending on order timing.

All parcels are delivered via DPD with EU tracking provided after dispatch.