Out of stock
Product Code

SiS Advanced Isolate + 1kg - Strawberry


Product Code
  • Exceptional quality Strawberry flavoured protein shake to promote the growth & maintenance of lean muscle mass.
  • Pure Whey Protein Isolate containing 9g BCAAs and 5g Leucine.


Product Information

SiS Advanced Isolate + contains 100% pure whey protein isolate with added leucine. This low carbohydrate and low fat protein shake contains 5g of leucine and 9g of branched chain amino acids (BCAAs) to stimulate and support the growth of lean muscle mass to maximise training gains. Each serving contains 31g of protein with only 1.7g of carbohydrate and 1g of fat.

Key Features:

  • • Contains 31 grams of rapidly digestible whey protein isolate per serving
  • • High amount of protein without additional calories
  • • 9g of BCAAs and 5g of Leucine per serving

Product Uses

Whey protein isolate has one of the highest-known protein digestion rates, and has a high BCAA content. BCAAs make up 35% of lean muscle mass; therefore they are an essential element to include in your diet when building lean muscle is the training focus.

Additional leucine has been included as it is an amino acid which serves not only as a building block for new muscle protein, but also increases the rate of muscle protein synthesis (muscle rebuild).

Nutritional Info
Typical ValuesPer 100gPer Serving 40g
of which sugars1.1g0.4g
of which saturates0.3g0.1g


Whey Protein Isolate (Milk), L-Leucine, Thickener (Xanthan Gum), Natural Flavouring, Emulsifier (Soy Lecithin), Colour (Beetroot Red), Sweetener (Sucralose).

Read More

What is the difference between this and SiS Whey Protein?

SiS Advanced Isolate+ has one of the highest known digestion rates and a higher BCAA content. The addition of 9g of BCAA's and 5g leucine help stimulate and support the growth of lean muscle mass. SiS Advanced Isolate+ is more purified, providing a higher protein content (31g) and lower levels of carbohydrate and fat.


When should I have this versus SiS Whey Protein and SiS REGO Rapid Recovery?

SiS Advanced Isolate+ can be consumed with or between meals to hit the recommended protein intake of 20-15g every 3-4 hours. Consume immediately post exercise, particularly after strength and conditioning sessions. This is ideal for individuals looking for minimal carbohydrate and fat intake, while maintaining and building lean muscle mass.


Why is it more expensive than SiS Whey Protein?

Whey protein isolate is digested and absorbed quicker than whey concentrate. SiS Advanced Isolate+ is a purified version of whey concentrate with additional leucine, which increases protein content with minimal carbohydrate and fat.


How many scoops per serving?

Add approximately 4 scoops to 250ml of water and mix well.


How much protein is there per serving?

SiS Advanced Isolate+ contains 33g of protein per serving.


You may also like
We found other products you might like!

Verified Reviews

Rated 4.4 out of 5 based on 10 Reviews
susan ingman

Excellent product for intense training, dies what it says ....

Robert Dewar

was hoping it might be ok for someone with IBS/lactose sensitivity. Not really suitable I'm afraid. Shame SIS don't do smaller pack sizes or samples to test beforehand, these packs are not cheap

leandro silva

Does the job.


Texture is a lot thicker than Whey protein and a bit slimy but drinkable. Think chocolate would be better than strawberry.

Iván Larrea Durango

excelente producto, satisface mis expectativas para lograr mis metas en el fitness.

Lynda Chase

As a vegan I’m always looking for easy good quality protein an this does the job.

Clement Pichon

Très bon en goût et facile à assimilé pour l'organisme d'un cycliste


Not keen on the gelatine texture, but flavour is ok !

Morag MacLennan

Great product! Tastes good, mixes well!

Michael Pearce

Fantastic product, great taste too.