Carb Key

Unlock the power of carbohydrates with Bulk Nutrients' Carb Key and start maximising muscle development and recovery.

  • Lactose Free
  • Gluten Free Ingredients
  • Vegetarian
  • Vegan
  • Taste
  • Convenience
  • Effectiveness
  • Value for Money

Great prices when buying in Bulk

  • 1 bottle = AU$39
  • 2 bottles = AU$75 (AU$37.50 each)
  • 4 bottles = AU$139 (AU$34.75 each)
Take 25% off Carb Key Capsules with our run out sale.  Simply use the coupon code 'CARBKEY-25' on the cart page. Strictly while stocks last.

Carb Key Carbohydrate Support Supplement

Unlock the power of carbohydrates with Bulk Nutrients’ Carb Key

Carb Key is designed to help you get the most out of your favourite macronutrient – carbohydrates.

This formula combines six key ingredients; Magnesium, Berberine, R Alpha Lipoic Acid, Zinc, Banaba and Chromium at doses used in research.

Carb Key may allow the body to better use carbohydrates as fuel and for building muscle mass.

These benefits are desirable for high level athletes such as bodybuilders looking to get the most out of their training and nutrition.

Maximise lean muscle development with Carb Key

When it comes to building lean muscle mass, carbohydrates are often overlooked.

But actually, carbs have an important role in muscle development. They’re a key nutrient which provides energy for workouts and replenishes depleted glycogen levels to aid in recovery and muscle growth.

However, your body can use them more effectively… that’s where Carb Key comes in.

The powerful ingredients in Carb Key can unlock the full potential of your carbohydrates by allowing the body to fully utilise available carbohydrates as fuel rather than storing them as fat.

Carb Key also supports weight loss goals

Not only does Carb Key help the body use carbs as fuel, it can also minimise hunger pangs, cravings and support fat loss.

Plus, the more efficient transport of fuel to muscle cells can lead to improved muscle building potential.

Convenient Capsulated Carbohydrates – take Carb Key wherever you go

These handy capsules make it easy to travel and live your busy life as normal.

With Carb Key you can forget about the scales and simply take the small bottle with you anywhere!

Please discuss with your health professional before consuming this product if you currently take medication for or have diabetes.

Carb Key Dosage

A typical dose of Carb Key is two capsules.


Take capsules with your highest carbohydrate meal of the day. Maximum of four capsules per day.

Please discuss with your health professional before consuming this product if you currently take medication for or have diabetes.


Magnesium L Aspartate, Berberine, R Alpha Lipoic Acid, Zinc Picolinate, Banaba Extract 1%, Magnesium Stearate, Chromium Picolinate.

Bulk Nutrients is proudly Australian owned and operated with all products developed, blended and packed locally in our facility in Grove, Tasmania. Find out more




Keep well sealed, store away from moisture, light and heat.

How do Carb Key Capsules taste?

Capsulated products mask any unpleasant taste from the raw ingredient.

Are samples available of Carb Key?

Sorry, we do not provide samples of Carb Key.

How is Carb Key packaged?

Carb Key is packaged in single 120 Capsule containers.

You can purchase 480 capsules for a further discount, but the product will be delivered in 4 x 120 Capsule containers.

Is the packaging for this product recyclable?

Yes! The capsule container and lid can be recycled as hard plastics in your local council pickup.

If you’d like more information, check this article which breaks down how all of Bulk’s product packaging can be recycled.

Can I take Carb Key if I currently take medication for diabetes?

Bulk Nutrients recommends discussing the supplementation of Carb Key with your health professional before purchasing or consuming.

Are Carb Key Capsules Vegetarian/Vegan Friendly?

Yes they are! Previously Bulk Nutrients’ capsulated products used gelatin based capsules, however in early 2019 we switched our range to use vegetable based capsules. This means our Carb Key Capsules are now 100% vegetarian and vegan friendly.

Carb Key Capsules Nutrition Information
Servings per package: 60 Servings size: 2 capsules
Average Quantity Per Serving Average Quantity Per 100g
Energy (kj) 1 47
Protein (g) 0 0
Fats (g) 0 0
  (saturated) (g) 0 0
Carbohydrates (g) 0 0.5
  (sugars) (g) 0 0.2
Sodium (mg) 0.1 11
Magnesium L Aspartate (mg) 491 40,841
Berberine (mg) 300 24,979
R Alpha Lipoic Acid (R ALA) (mg) 200 16,653
Zinc Picolinate (mg) 120 9,992
Banaba Extract (Corsolic Acid) (mg) 50 4,163
Chromium Picolinate (mg) 1 42

Formulated Supplementary Sports Food. Not suitable for children under 15 years of age or pregnant women. Should only be used under medical or dietetic supervision. This product is not a sole source of nutrition and should be consumed in conjunction with a nutritious diet and appropriate physical training or exercise program.

Carb Key Reviews

It definitely works

Posted by AdamF on July 15, 2019

So taking two tablets a day before I started eating my meal, I noticed that I was losing bulk around my weight, but still keeping on the kilos. I also noticed that I pooped less and less frequently too, which was a bonus for other reasons. The bottom line is, that it works. I love it and this will be on my repeat orders. I find that taking two pills before lunch, and then again before dinner helps when you have a day of high carb meals. I’m gaining mass, but it’s not around my waist anymore.


Posted by Annette White on May 6, 2019

Great little support. .well worth go