WHAT IS KARBOLYN?
- Fast-Absorbing Carb With Complex Carb Sustainability
 - Glycogen Loading Fuel Source
 - Sugar-Free, Gluten-Free, Stimulant-Free
 - Invented By EFX Sports Scientist Dr. Jeff Golini
 - Informed Sport Certified, Banned-Substance Tested
 - Manufactured By Us - We Control ALL Production
 - (Does NOT Contain Wheat, Milk, or Soy)
 
WHY USE KARBOLYN?
- Perfect Fuel Source: Use Pre, Intra, Post Training
 - Enhance Athletic Endurance
 - Intensify Muscle Pumps For Bodybuilders
 - Maintain High-Intensity Training Levels
 - Maximize Strength & Power Output
 

➤ FOOD-BASED, FAST-ACTING FUEL
Karbolyn is a clinically studied (with peer-reviewed, published research) carbohydrate supplement powder sourced from potato, rice, and corn. It’s designed for elite athletes looking for a fast, safe, and high-performance way to quickly and easily load muscles with lasting energy and for faster recovery. “Carb load” with Karbolyn in minutes, not hours before your event or training session!
➤ ACCEPT NO SUBSTITUTES
Absolutely nothing fuels your monster workouts like Karbolyn! It enters the bloodstream like a simple sugar, yet it still provides sustained energy without "crashing". Karbolyn is absorbed faster than dextrose, simple sugar, bread, pasta, rice, and other carbohydrate products sold in the marketplace - simple or complex. Pros worldwide use it for a reason!
➤ POWER, PUMPS, & PEAK PERFORMANCE
Do you want to Outlast, Outmuscle, and Outperform anything in your way? Then stop messing around with overhyped copycat products that would never make it past our lab. Use Karbolyn to maximize and maintain high-intensity training levels, power output, for greater muscle hardness and fullness… and pumps like you’ve never experienced before!

➤ THE REAL SPORTS DRINK
Forget sugar-filled “sports” drinks that do very little to help fuel your game or workout. Karbolyn is 100% sugar-free, gluten-free, stimulant-free, and vegan-friendly. Ever use a carb powder that gels or clumps like cement? Most are shocked at how easily Karbolyn mixes and how delicious it tastes. The bottom line: Karbolyn ensures you are optimizing your glycogen stores before, during, and after training…without feeling bloated or cramping!
➤ WE MANUFACTURE OUR OWN PRODUCTS
EFX Sports is part of a very small, elite group of brands that actually make their own products. That’s why we can unquestionably guarantee Karbolyn always meets label claims and is 100% banned-substance free (certified by Informed-Sport). When you use Karbolyn by EFX Sports, you have the purest, most potent carbohydrate product available anywhere!

Delivery Terms & Conditions / Options & Information
Operated by: Nutrition & Internet Supplements Limited (trading as “NI Supplements”)
Registered Office: Unit 5, Graham Industrial Park, Dargan Crescent, Belfast, Co. Antrim, BT3 9LP, United Kingdom
Last updated: 11 October 2025
1. Dispatch & Processing
- Orders placed before 1 p.m. UK time (Monday–Saturday, excluding Bank Holidays) are normally processed and dispatched the same working day.
 - Orders placed after this time are processed on the next working day.
 - Delivery timeframes exclude Sundays and public holidays unless explicitly stated otherwise.
 - Courier network disruptions (e.g., strikes, weather, customs) may extend delivery times beyond our control.
 
2. Delivery Options – United Kingdom (Mainland & Northern Ireland)
Orders under £50
| Service | Price | Estimated Speed | Notes | 
|---|---|---|---|
| 1–2 Day Tracked (No Signature Required) | £2.95 | 1–2 working days (91% next-day) | Fully tracked; photographic & GPS delivery proof confirms delivery. “No Signature Required” terms apply. | 
| 1–2 Day Tracked (Signature Required) | £3.35 | 1–2 working days (91% next-day) | Signature obtained on delivery. | 
Orders £50 and over
| Service | Price | Estimated Speed | Notes | 
|---|---|---|---|
| 4–5 Day Tracked (No Signature Required) | Free | 4–5 working days | Fully tracked; photo/GPS proof confirms delivery. “No Signature Required” terms apply. | 
| 4–5 Day Tracked (Signature Required) | Free | 4–5 working days | Signature obtained on delivery. | 
3. Delivery Options – Republic of Ireland, EU & International
- Available services, prices and estimated transit times are displayed at checkout.
 - Delivery times vary by destination and customs clearance processes.
 - Recipients are responsible for any local import duties, taxes, or customs charges.
 - We cannot influence or expedite customs procedures in destination countries.
 
4. Delivery Confirmation, Risk & Transfer of Responsibility
(a) Signature Required
- A signature will be obtained at the point of delivery.
 - Until a signed handover occurs, the parcel remains at NI Supplements’ risk.
 - Once signed for by you or a nominated recipient, delivery is complete and responsibility transfers to you.
 
(b) No Signature Required / Authority to Leave
By selecting “No Signature Required” or authorising an unattended delivery / safe place, you:
- Expressly instruct the courier to deliver the parcel to your address or nominated safe place without obtaining a signature.
 - Acknowledge that the courier’s photo and GPS confirmation constitute full proof of delivery.
 - Accept that once such confirmation is recorded, the order is deemed successfully delivered, and
 - Agree that risk of loss, theft or damage passes to you immediately upon that confirmation.
 
Accordingly, NI Supplements’ delivery obligation is fully discharged once the courier records a delivered scan with accompanying GPS/photo evidence.
If you are concerned about parcel security at your address, please select “Signature Required” at checkout. This is recommended for high-value orders or where the delivery location is unattended or visible from a public street.
5. Non-Delivery Claims
- All non-delivery reports are investigated directly with the courier.
 - Where the courier provides proof of delivery (signature, photo or GPS record) matching the supplied address, the order is considered fulfilled and is not eligible for replacement or refund under this policy.
 - Where the courier confirms no delivery, we will either resend or refund the order promptly.
 
6. Failed Delivery, Refusals & Returns to Sender
- If a parcel is returned due to customer error (e.g., incorrect address, failure to collect, or refusal of delivery), we may either:
- Resend it after payment of a re-shipping fee; or
 - Refund the product value less the original outbound shipping cost.
 
 - Where the error or delay was caused by NI Supplements or our courier, we will resend at our expense.
 
7. Same-Day Dispatch Guarantee (Express Orders)
- Guaranteed for orders placed before 1 p.m. (Monday–Saturday).
 - Couriers may experience exceptional delays beyond our control; such events do not invalidate the guarantee for dispatch timing.
 
8. Working Days Definition
“Working Days” means Monday to Saturday, excluding UK Bank Holidays. Orders placed after 1 p.m. on a Saturday or on a Bank Holiday are processed on the next working day.
9. Evidence & Investigation
We maintain courier records, including time-stamped tracking data, GPS coordinates and photographic delivery evidence, for audit and anti-fraud purposes. Customers alleging non-receipt after confirmed delivery may be asked to provide a police crime reference number. We reserve the right to cooperate with carriers and authorities in any fraud investigation.
10. Contact Information
For questions about delivery status or services, please contact:
hello@nisupplements.com
Nutrition & Internet Supplements Limited, Unit 5 Graham Industrial Park, Dargan Crescent, Belfast, Co Antrim, BT3 9LP, United Kingdom.