Nothing in your cart

Uh oh! Your cart is empty 😢

One of these products might be what you're after...

No recent items

Why Should You Use Micellar Casein?

Bulk Nutrients explains why you should be use Micellar Casein

What is Micellar Casein?

Sourced from Australian cow’s milk, Bulk Nutrients Micellar Casein is a dairy protein. Micellar Casein accounts for around 80% of the protein found in milk with the remainder being whey protein. So if you can jog your memory back to childhood nursery rhymes, do you remember Little Miss Muffet who was eating her curds and whey? Well Micellar Casein is the curds!

It contains a rich spread of amino acids like whey and is very high in essential amino acids which are necessary for muscle protein synthesis (muscle growth).

Even a small dose of EAAs post-exercise has been found to significantly increase muscle protein synthesis. (Børsheim, Tipton, Wolf and Wolfe, 2002)

The term micellar refers to the fact that these proteins naturally aggregate into “micelles” when in a watery medium.

These micelles exist in a natural globular structure and are made up of five caseins; alpha, beta, gamma, delta, and kappa. The removal or modification of any one of the five caseins destroys the natural micelle protein.

Micellar Casein differs from other caseins/caseinates as it exists in its natural form and is more readily digested by the body.

Other caseins and caseinates have been exposed to acid and alkali processes during their production in order to make them more palatable for use in food. As a result of these harsh processes, they have a lower level of bioactivity due to the natural micellar structure of the casein being destroyed and the protein denatured/damaged.

How is Micellar different to WPC or WPI?

Micellar Casein at a glance

  • Slow absorbing/digesting protein source
  • Bedtime protein
  • Promotes lean muscle growth
  • Supports recovery
  • Elicits feeling of fullness
  • Delivers protein to muscles for up to 12 hours

Where Micellar Casein differs from a regular whey protein is its absorption rate. Micellar Casein is a slow release protein powder whereas whey proteins are fast absorbing proteins.

Whey protein is very quickly absorbed by the body, in fact both our WPI and WPC are rapidly absorbing proteins. In comparison, Micellar Casein can deliver amino acids to the muscles for up to 12 hours!

Why is that? Well, when ingested casein forms a gel-like fibre in the stomach which slows down the rate of gastric emptying and therefore affects the rate at which amino acids are absorbed into the bloodstream.

Slower release proteins such as Micellar Casein have shown to be both very effective at anabolism (muscle building) as well as preventing muscle wastage (catabolism).

It has been shown that four hours after ingestion of whey protein, branched chain amino acids (BCAAs) are no longer being supplied to the body, while Micellar Casein was still able to supply BCAAs at this time.

Furthermore, significantly higher concentrations of leucine (a BCAA) can be found in circulation seven hours after consuming Micellar Casein compared to whey protein.

Micellar Casein can help you get a good night sleep
Micellar Casein can help you get a good night sleep

When should I take Micellar Casein?

As Micellar Casein is slow to digest and delivers protein to muscles slowly over several hours, it’s ideally taken before bed or when frequent meals aren’t possible.

Micellar Casein is known as the ‘bedtime’ protein as it’s such a popular use among athletes. The continued supply of protein to the muscles overnight helps with recovery and muscle growth and can minimise sore and achy muscles upon waking in the morning.

Because you aren’t ingesting food or protein while you sleep your muscles aren’t receiving a constant flow of amino acids to promote recovery.

By supplementing with casein before bed, you will have protein in your system throughout the night to increase protein synthesis and help stimulate muscle growth.

This makes casein great for recovery, as it is digested effectively and properly absorbed during sleep. One study found that a single 20g dose, 30mins before bed resulted in an increase to the body’s MPS, which remained elevated throughout the night (7.5hr) (RES et al., 2012)

We’d recommend taking Micellar Casein every 6 to 7 hours throughout the day (if you want to take it during the day) and prior to bed at night.

It’s not recommended that you replace a rapid acting whey or plant-based protein with Micellar Casein within the first 1-2 hours after resistance training.

What does Micellar Casein taste like?

It’s thick and creamy and if we’re 100% honest, seriously delicious. You can simply mix it up in a shaker with water or milk or like a lot of people enjoy it, as a pudding.

Micellar Casein Dessert

As Micellar Casein becomes thick when added to a liquid, it can be made into a custard-like dessert.

Just adding a small amount of water, milk or yoghurt at intervals mixing it each time and voila you have a vanilla or chocolate high protein dessert.

Micellar Casein Smoothie/Shake

Alternatively, Micellar Casein can be added to an existing whey protein blend for the purpose of extending its amino acid release rate.

Add Micellar to water for a healthy shake

Mixing Micellar Casein is easy - just mix the Micellar and water to create a healthy, tasty smoothie.

The more liquid you add to your micellar water mix the less flavoured it will be.

Is Micellar Casein best for me?

As Micellar Casein makes up most of the proteins in milk, it is safely consumed in large quantities by people every day. However, it does contain high levels of lactose, so if you are sensitive to lactose or dairy products, Micellar Casein may not be the best choice for you.

Why take Micellar Casein protein?

Bulk Nutrients' Micellar Casein Protein is perfect if you ...

  • ... are looking for a slow digesting protein powder
  • ... feel achy and sore after training so hard and experience delayed onset muscle soreness
  • ... you feel hungry at night time and want to prevent snacking
  • ... you wake up feeling very hungry
  • ... are seeking to retain or increase lean muscle mass
  • ... are on a low-calorie diet as it helps maintain satiety (feelings of fullness) for longer periods of time than whey or soy protein
BN ambassadors Lindsay & Sam with their favourite night time protein

Still have questions about Micellar Casein Protein?

Chat with our friendly customer service team if you have any further queries about whether Micellar Casein is right for you.


  1. Børsheim, E., Tipton, K., Wolf, S. and Wolfe, R., 2002. Essential amino acids and muscle protein recovery from resistance exercise. American Journal of Physiology-Endocrinology and Metabolism, [online] 283(4), pp.E648-E657. Available at: Essential amino acids and muscle protein recovery from resistance exercise.
  2. Res, P., Groen, B., Pennings, B., Beelen, M., Wallis, G., Gijsen, A., Senden, J. And Van Loon, L., 2012. Protein Ingestion before Sleep Improves Postexercise Overnight Recovery. Medicine & Science in Sports & Exercise, [online] 44(8), pp.1560-1569. Available at: Protein Ingestion before Sleep Improves Postexercise Overnight Recovery.

Featured Products

Bulk Nutrients' Micellar Casein is a creamy protein and makes a tasty night time snack too
864 reviews
group of product images for proteins
group of product images for proteins

Popular Posts from the Bulk Blog

With over 700 recipes and articles, the Bulk Nutrients Blog has something for everyone! Find a new workout, meet our ambassadors or take a deep dive into our products today.

Compare all Bulk Nutrients proteins

Popular Proteins

Popular Products

Popular Categories

About Bulk Nutrients

We're an Australian manufacturer and supplier of high quality sports supplements.

Operating since 2008, Bulk Nutrients has become one of the premier Australian brands to supply nutritional products to top level athletes, competitors and those on a journey to a healthier lifestyle.

Find out more about Bulk.

Contact Bulk Nutrients

One thing that sets Bulk Nutrients apart is that we love to talk to our customers!

Whether you need product advice, help with the website or need a change made to your order... call us on +61 3 6266 4725.

If you prefer email you can email us day or night at

For online chat, hit the 'Chat' button in the bottom right hand corner of your screen and you'll be connected to one of our lovely customer service team.

Or if you'd like to get in touch through our online contact form, that's cool too!

Follow us on Social Media

Bulk Nutrients on FacebookCheck out Bulk Nutrients' Instagram postsView Bulk Nutrients' TikTok contentView Bulk Nutrients' YouTube Channel



We acknowledge the Traditional Owners of the land on which our organisation operates, the Melukerdee People of the South East Nation and pay our respects to Elders past, present, and emerging.

Bulk Nutrients is proudly
Australian owned and operated.

7 Crabtree Road, Grove, Tasmania, 7109.
ABN: 17 158 981 447

Terms & ConditionsSustainability StrategyPrivacy PolicyPayment InformationSitemap

All prices are in Australian dollars (AUD) and include GST unless otherwise stated.
All content copyright © Bulk Nutrients 2008 - 2024