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SIS SIS Overnight Protein 1kg
SIS Overnight Protein 1kg
SIS Overnight Protein 1kg
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Nutritional Info
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Key Features

1 x 1kg Tub
Slowly Digested Milk Protein
Maintains Muscle Mass While You Sleep
Informed Sport Tested
Low In Carbohydrate, Sugar And Fat
80% Cesein, 20% Whey


The SiS Overnight Protein Provides a source of slowly digesting protein to provide a pool of amino acid to help support lean muscle growth and maintenance as you sleep.

Made from high quality milk protein it provides great taste and a trusted source of protein. Each serving contains 26-27g of protein per serving, depending on the flavour you choose. The milk protein contains the same ratio of fast and slow release proteins as found naturally in milk. 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. The formulation has low levels of carbohydrate and fat.

As with all SiS products, SiS Whey Protein is produced at our Informed Sport accredited factory and is rigorously screened to ensure a clean, safe product that athletes of all levels trust.

Recommended Usage

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

About Science In Sport

Science in Sport grew out of the desire to provide the best nutritional products and advice to athletes. The company mixes qualified sport scientists, food technologists, and a physician with keen athletes and sports people who have competed from local level to the world stage. As a result of all this experience they have an unprecedented knowledge of the nutritional needs of athletes. Science in Sport also collaborate with leading universities on research projects, as well as getting involved at the sharp end of sports performance.

NB: Image for illustration purposes only

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