EFX Sports

KARBOLYN FUEL - 39-35 Servings

$49.99

Subscribe & Save 10% off $44.99

Modify, skip, or cancel anytime.

Quantity:

Add to Wishlist

Product Details

Fifty grams of carbs that hit like sugar and last like oatmeal. Carb-load in minutes, not hours.

What It Is

Karbolyn Fuel is EFX Sports' fast-absorbing carbohydrate powder, sourced from potato, rice and corn. Every scoop delivers 50g of carbs with zero sugar, no gluten, no stimulants, and no wheat, milk or soy. It's clinically studied, Informed Sport certified and banned-substance tested, invented by EFX's Dr. Jeff Golini and made in their own facility. Neutral (unflavored) is 39 servings; flavored tubs are 35.

Who It's For

Bodybuilders who need to fill out before a show or a photo shoot. Anyone training twice a day who can't eat enough real food between sessions. Endurance and team-sport athletes who want carbs during an event without a sugar crash. Lifters in a building phase who struggle to hit their carb number. Not for you if you're cutting hard and counting every carb. This is 50g a scoop; it's a performance tool, not a fat-loss product.

How It Helps

  • 50g of fast-absorbing carbs per scoop support quick glycogen loading before, during or after training.
  • Absorbs fast like a simple sugar but releases steady, so you get lasting energy without the crash.
  • Supports muscle fullness and pumps by loading glycogen and water into the muscle.
  • Supports endurance and power output through long or back-to-back sessions.
  • Sugar-free, gluten-free, stim-free, and free of wheat, milk and soy.

What's Inside

Karbolyn carbohydrate from potato, rice and corn, 50g carbohydrates per scoop. Zero sugar. Full nutrition panel is on the label.

How To Use

Mix 1 scoop (about 50g) in a shaker with 16 oz of water. For everyday use, drink it 30 minutes before training. For hard training or events: one serving 30 minutes before, sip one during, and one after.

Good To Know

  • Flavors: Neutral (unflavored), Orange, Blue Razz Watermelon, Fruit Punch, Strawberry, Kiwi Strawberry, Green Apple.
  • Neutral = 39 servings. Flavored = 35 servings.
  • Neutral mixes into anything: your pre-workout, your intra, or a protein shake.
  • Not sure how many carbs you should actually be eating? Come in for a free InBody scan and we'll do the math with you.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Not sure?

Not sure this is the right one for you?

Four questions, 60 seconds. You'll get a short list of what's actually worth buying for your goal — this, or something better suited to you.

Take the quiz

or just ask us →

Free shipping

Free shipping

On orders $99+

Customer service

Customer service

Message us anytime — a real person answers, usually same day

Tried it, hated it? Bring it back.

30 days, store credit, no arguing at the counter. Opened is fine under 2 servings. Sale items excluded.

5.0 stars on Google

273 reviews from Ocean County locals. Ask us anything before you buy.

Don't know where to start?

Tell us the goal. We'll point you at what works.

Drop your contact info and one of our supplement experts will reach out — no script, no pressure, just answers.

PS: A real person reads every message — usually Matt.