Overnight Protein Powder 1kg - Cookies & Cream

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Product Overview

Why Choose?

  • Rebuild


About SiS Overnight Protein

SiS Overnight Protein (Cookies & Cream) is made from high quality milk protein in a 50:50 blend with whey protein isolate for a great taste, providing a source of slowly digesting protein with a high amino acid profile to support lean muscle growth and maintenance as you sleep.

Milk protein is over 80% casein, which is a slowly absorbed protein and around 20% whey, which is rapidly absorbed. Whey protein stimulates the rate of muscle protein synthesis with its high leucine content. Each serving contains 25g of protein per serving and low levels of carbohydrates and fat.

Why should I have SiS Overnight Protein?

Sleep is one of the most important aspects of recovery and is often unappreciated by many athletes. Regularly feeding 20-25g of protein every 3-4 hours is the best way to support the growth and maintenance of lean muscle mass. Feeding during the night is impractical, so taking SiS Overnight Protein before bed allows quality sleep and quality protein delivery to maximize your training adaptations.

Directions For Use

Add 35g of SiS Overnight Protein to 250ml of water in a protein shaker bottle using the scoop provided. Shake well ensuring the lid is firmly closed. Consume cold or transfer into a cup and then heat in a microwave. Drink one hour before going to bed.

Recommended Usage

SiS Overnight Protein should be taken 45-60 minutes before bed. Can be served hot or cold.

Key Features

  • Slowly digested milk protein
  • Fueling gold medal winners since 1992
  • Informed Choice tested
  • Suitable for: Vegetarians; Coeliacs; Gluten Free; Wheat Free; Nut Free. Contains Milk
  • Contents: 1kg Tub (28 Servings)
  • Best If Used By: 6 Months After Purchase

Informed Choice Registered: Our complete product range is developed using a world-class approach to banned substance testing, providing assurance for athletes. For more information on Informed Choice & our unique world class approach, click here.

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Nutritional Information
Suitable For
Nutrition Stats
Typical ValuesPer 100gPer Serving 35g
Energy 1571kj/371kcal 550kj/130kcal
Protein 73g 25g
Carbohydrates 5.3g 1.9g
Sugars  1.9g 0.7g
Fat 5.7g 2.0g
Saturated Fat  3.5g 1.2g
Fiber 3.2g 1.1g
Sodium 0.7g 0.3g


Protein Blend (89%), (Milk Protein Isolate, Whey Protein Concentrate (Milk)), Fat Reduced Cocoa Powder, Natural Flavorings, Thickener (Xanthan Gum), Emulsifier (Soy Lecithin), Sweetener (Sucralose)

For allergens, see ingredients in bold.


Why should I use this instead of SiS Whey Protein and REGO Rapid Recovery?

As we aim for 20-25g of protein every 4 hours, this is difficult to do when we're asleep. SiS Overnight Protein contains milk protein, which is made from 80% casein and 20% whey. This is slowly released helping to maximize training adaptations and reduce muscle breakdown overnight, without unwanted calories from carbohydrate and fat.


Can I take this before/during/after exercising?

Due to the slow absorption of SiS Overnight Protein, we do not recommend that this is taken pre and/or during exercise. After exercise, SiS Whey Protein or SiS Advanced Isolate+ is ideal due to the rapid absorption rates. For maximum benefit, consume SiS Overnight Protein an hour before bed.


How much protein is there per serving?

SiS Overnight Protein contains 25g of milk protein.


How many scoops per serving:

Add 3.5 scoops to 250ml of water and mix well.


Reviews (2 Reviews)
Showing 2 of 2 reviews

Easy recovery during the night



dessert before bed - catches my sweet tooth

Scott Cox