Ultra-Premium Protein Matrix Contributing To Muscle Growth
Blended Protein Formula With A Real Milkshake-Like Taste
9.2  out of 10  (3,848 Reviews)
1 Size
2.26 Kilograms
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3 Flavors
Chocolate Mudslide - Limited Edition
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Price: £47.99  (£1.00 / Serving)
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For a limited time, buy 1 Syntha-6, 5 Lbs. & get 1 50% Off!

Product Overview

BSN Bottle

Ultra-Premium Blended
Protein Powder

  • Supports Muscle Growth
  • Supports Maintenance of Muscle
  • Contributes to Normal Muscle
    Function (Calcium)
  • Milkshake-Like Taste Ridiculously

Push your performance past previous barriers.

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Ultra-Premium Blended Whey Protein Powder

SYNTHA-6® is an ultra-premium protein powder with 22g protein per serving and is BSN®'s best-tasting protein on the market. SYNTHA-6® not only includes essential amino acids and essential fatty acids, but is also an excellent source of fiber, which makes it a nutritious and multi-functional protein supplement. SYNTHA-6® is the go-to protein for any nutrition or exercise regimen because it is designed to suit a variety of active lifestyles and diet plans. And with SYNTHA-6®, the high standard of quality protein comes with taste to match, thanks to BSN®'s exclusive flavor technology.

Ridiculously Delicious

BSN® broke through the whey protein flavor barrier once and for all with the introduction of SYNTHA-6®. Available in over 10 decadent flavors, SYNTHA-6® mixes like a delicious milkshake and is designed for any individual who wants to supplement daily protein intake to help reach their nutritional and physique goals.

BSN Supplementation

At BSN®, we have designed our products to complement one another. When used together, they can help enhance the overall benefits of your supplementation and workout regimen.

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Ratings & Reviews

Overall Rating
3,848 Ratings
Verified Buyer Rating
1,207 Ratings
Average Flavor Rating
16 Flavors
Top Rated Flavor
Mint Mint Chocolate Chocolate Chip
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Verified Buyer
  • 8 Chocolate Milkshake
  • 10 Chocolate Cake Batter
  • 9 Birthday Cake Remix

I love Syntha 6 and have been using it for 2 years on and off now. When taking right I can feel and see the difference. Nothing beats the taste of it too. By taking it right, that means using it twice per day. I've been stacking it with KM isolate in the morning. So immediately after working out, I take km isolate, then I wait 15-30 minutes and take Syntha. It gives me the all day amino coverage that I love. Plus the tastes are amazing. I then take a scoop of Syntha at night before bed. Chocolate cake batter is their best flavor. The birthday cake Remix is amazing too, but it's not as thick and they put too many sprinkles in it. They just sink to the bottom so you get a ton of sprinkles in your last sip. Chocolate milkshake is good but if your a chocolate fan, chocolate cake batted is 10x better. Love this stuff!

Verified Buyer
  • 10 Germanchokolatekake


Verified Buyer
  • 10 Mint Mint Chocolate Chocolate Chip

Please don’t discontinue this flavour. This is the best tasting protein I have ever had.

Verified Buyer
  • 6 Chocolate Peanut Butter
  • 6 Vanilla Ice Cream

This product is okay. I’ve had better.

Verified Buyer


Verified Buyer
  • 10 Chocolate Milkshake

Syntha 6 whey protein really impressed me.This protein Tastes So delicious and I have also Gained solid muscles size with syntha 6.

Verified Buyer
  • 10 Peanut Butter Cookie

Whey better than other brands, and peanut butter cookie is the perfect flavor. Tastes like a peanut butter milkshake with just single scoop.

Verified Buyer
  • 10 Peanut Butter Cookie

I normally dont take the time to write reviews, but this was the best tasting whey protein i’ve ever had hands down.

Verified Buyer
  • 10 Birthday Cake Remix

My prayers have been answered! I bought Syntha6 Birthday Cake Remix at a local store and the taste is nothing short of amazing. This will improve to a 10 once they make the isolate version. My only issue with Syntha6 is since it is a concentrate and has some filler, it does cause a bit of gas (particularly when first starting). I don’t care though with a flavor that good haha. The price is also great. I just bought 2 big tubs here to stock up while on sale.

Verified Buyer
  • 9 Chocolate Milkshake

Best tasting protein powder I’ve ever had, includes effective ammount of protein and fairly good price. Also the scoop thing never gets sticky or covered with the protein powder and I have no clue how, it amazes me

  • 10 Strawberry Milkshake
  • 10 Vanilla Ice Cream

I sampled this in the vanilla ice cream a couple of times and was really impressed. I do not drink milk but mixed in the blender with water and ice. it tasted just like a milkshake. Based on reviews I decided to buy the strawberry milkshake flavor as well. Since ice cream is one of my biggest weaknesses i thought this may help me stay on track this summer. I love both flavors.

Verified Buyer

Where’s the FIBER ? Does this contain 0 grams of fiber now ? I use to buy instead of other brands because it contained 5 grams of added fiber


High fructose corn syrup is not good there are many other ingredients you are paying more for fillers and less for protein

  • 9 Chocolate Milkshake
  • 10 Mint Mint Chocolate Chocolate Chip

I have had the Chocolate Milkshake flavor and it is wonderful!! But let me tell you, OMG, I just bought the Cold Stone Creamery Mint Chocolate Chip and it is ridiculously good!! Hands down the best protein powder I have ever had!!! Amazing and I hope they continue to sell this flavor!!! So freaking good!!!

Verified Buyer
  • 7 Chocolate Peanut Butter

I use this as a mid shift protein boost at work. I still prefer GS as my post workout protein but i like this as an extra meal throughout my day. I like Syntha-6 don't get me wrong.. I bought the chocolate peanut butter flavor.. I'm not a fan of the "cookie bites" in this flavor. The rest of the powder mixes great but the "cookie bites" do not mix and pool at the bottom of the drink. Nothing ruins a protein mix worse than chugging it down then all of a sudden feeling clumps of something slide down your throat to finish off the drink. Suppose I could just filter the drink after mixing it but who's got time for that..

What's in BSN Syntha-6

2.26 Kilograms Chocolate Mudslide - Limited Edition
Serving Size: 1 Heaped Scoop (47 g)
Servings Per Container: Approximately 48
Typical Values % RI *
Energy 774 kJ 10%
- 185 kcal       
Fat 6.5 g 9%
Of Which Saturates 1.7 g 9%
Carbohydrate 6 g 2%
Of Which Sugars 1.6 g 2%
Fibre 5.7 g       
Protein 22 g 45%
Salt .35 g 6%
Sodium 141 mg       
* Reference Intake of an average adult (8400 kJ/2000 kcal).
Protein Blend (WHEY* Protein Concentrate, WHEY* Protein Isolate, Calcium CASEINATE*, Micellar CASEIN*, MILK Protein Concentrate, Emulsifier: SOY Lecithin), Sunflower Oil Powder [MILK], Thickeners (Polydextrose, Cellulose Gum), Fat-Reduced Cocoa Powder, Flavourings [MILK], Medium Chain Triglyceride Powder [MILK], Sodium Chloride, Sweeteners (Sucralose, Acesulfame K), EGG Albumen, Glutamine Peptides [GLUTEN].
* From Milk.
MADE IN EU. EU Customer Service: 4 Waterside, Citywest Business Campus, Dublin 24, Ireland

Directions For Syntha-6: Mix 1 heaped scoop (47 g) with 120 - 150 ml of cold water. Adjust as needed for taste.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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