Search  for anything...
BSN

BSN SYNTHA-6 Premium Protein Powder, 8g Fiber, Whey Isolate, 48 Servings

  • Based on 1,003 reviews
Condition: New
Checking for the best price...
$75.98 Why this price?

Buy Now, Pay Later

As low as $12.66 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable due to Food safety reasons

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Oct 7
Order within 9 hours and 22 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Flavor Name: Chocolate Cake Batter


Size: 5 Pound (Pack of 1)


Features

  • RIDICULOUSLY DELICIOUS : BSN broke through the whey protein flavor barrier once and for all with the introduction of SYNTHA-6
  • 22G PROTEIN MATRIX : consisting of whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin
  • 2-3G SUGAR : while the taste is mind blowing, Syntha-6 contains 2-3g of sugar per serving depending on flavor
  • USE ANY TIME OF DAY : post workout, between meals, as a snack, or as a treat, it doesnt matter. BSN Syntha-6 was formulated to be your any time of day protein powder
  • PROTEIN SUPPLEMENTATION : Promotes muscle protein synthesis and recovery support

Description

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.

Product Dimensions ‏ : ‎ 8.03 x 8.03 x 11.31 inches; 5 pounds


Item model number ‏ : ‎ 1048101


Department ‏ : ‎ Adults


Date First Available ‏ : ‎ April 27, 2011


Manufacturer ‏ : ‎ Glanbia Performance Nutrition


Best Sellers Rank: #2,259 in Health & Household (See Top 100 in Health & Household) #22 in Sports Nutrition Protein Powder Blends #395 in Sales & Deals


#22 in Sports Nutrition Protein Powder Blends:


#395 in Sales & Deals:


Customer Reviews: 4.6 4.6 out of 5 stars (1,003)


Flavor: Chocolate Cake Batter


Diet Type: Vegetarian


Product Benefits: Muscle Growth, Muscle Recovery


Protein Source: Casein, Whey


Protein: 22 g


Vitamins And Minerals: 0, 0, 15, 220, 55, 8 percent_daily_value_fda, 160, 170, 2.4, 300, 35 milligrams


Caffeine Content Description: Caffeine Free


Supplement Formulation: Individual Supplement


Total Servings Per Container: 48


Item Weight: 5 pounds


Unit Count: 80 Ounce


Number of Items: 1


Item Dimensions: 8.03 x 8.03 x 11.31 inches


Brand Name: BSN


Package Type Name: Tub


Age Range Description: Adult


Model Name: BSN SYNTHA-6 Whey Protein Powder, Micellar Casein


Global Trade Identification Number: 24


UPC: 767644525268 834266007424


Item Highlight: Multi-Source Protein Blend with Whey Isolate, Micellar Casein and Milk Protein Isolate, Fiber and Healthy Fats


Manufacturer: Glanbia Performance Nutrition


Model Number: 1048101


Manufacturer Part Number: 1162997


Recommended Uses For Product: Muscle Growth, Muscle Recovery, Post-Workout


Allergen Information: Milk, Soy


Material Type Free: Sugar Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 7

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Chocolatey and nutritious
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
I love the flavor! It is a little blander than I was expecting, but I can remedy that very quickly. It blends very well. I haven’t had any issues with chunks or powdery taste.
Reviewed in the United States on May 24, 2026 by Wade and DeAnna Hunter
    • Great tasting protien that actually works!
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
I'm not a body builder or a hard core gym freak, but I do what I need to do to stay healthy. I take a pre-workout and protien shake twice a day, once in the morning and once immediatly after my workout and that's all the workout supplements I take. I've used ON Gold Standard, Dymatize Elite, and Scivation Whey. I think they are all great and have a good taste and are also easy to mix, but I'm leaning more towards the Syntha-6. First let me say that the cake batter is the best tasting protien I've ever had, even my wife liked it (and she's very picky). Secondly, the mixability is good but I use the blender ball and that always gets it done. I did try to mix it one day without the blender ball and had some clumps, but nothing too bad. I felt like I had a noticable difference in the performance as well. I started taking syntha 6 after I took about 7-8 months off from the gym and I wasn't taking anything that entire time. I was literally starting out fresh. I've done this before and I knew the first 2-3 weeks would be the worst. Muscles swelling, cramps, aching and so forth, HOWEVER I had none of that. This was the first time I didn't have cramps or severe swelling. I didn't hold back either, I pushed and did the force rep method and even some drop sets. The Syntha-6 gave me quick recovery times and excellent support for muscle growth. It was immediate. I had people asking me if I had been working out by week 2. They could see it that fast. 2 scoops in the morning every day (on days and off days) and then 2 scoops immediatly after your work out will get it done. This is an excellent protien for the money and worth the try. I'm going to stick with this product for the long haul. ... show more
Reviewed in the United States on September 3, 2013 by Brock
    • Tastes AMAZING even with water
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
The chocolate cake batter flavor has been my go-to for years. I have medical issues which cause me to be unable to eat as much as I should, without much appetite at all. Having a quick and easy protein source that I actually WANT and CRAVE to eat is so important to my health, so this stuff has been a literal lifesaver for me. It tastes sooooo good that I would 100% want to drink it every day even if it didn't have the benefit of protein. Tastes a lot like Swiss Miss hot chocolate in a way, but it's creamier than Swiss Miss even when you only add water! Let me repeat, this is creamy and delicious and perfect just with water! Not grainy or chalky, no bad aftertaste, doesn't taste like chocolate flavored water (even though it is). No joke. I've tried enough other brands to realize how rare that is in a protein powder. A+! ... show more
Reviewed in the United States on August 1, 2023 by Amazon Customer
    • Happy Customer
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
I had read all the reviews and I must be honest when I say that I did not believe them, after all how could a protein powder taste great. I have used ON brand for over a year and I tolerate the flavor because the product works but I do not look forward to my daily shakes. I had used the ON Whey in Banana, Strawberry, and Chocolate and they all tasted awful so, I finally settled for the Vanilla because it was bearable. I wanted to try a new brand because ON has become a little pricey and after reading some reviews, I decided to buy BSN Syntha-6 Protein Powder, Strawberry Milkshake, 5 Pound as well as the BSN Syntha Powder, Chocolate Cake Batter, 5 Pound but, I did not expect it to taste good. I received my shipment today and I have now tried both these flavors......WOW!!!!!! I actually took my time a sipped it down rather than chugging my shake before I gagged the way I had to with my ON Whey. I can not yet review any results but, it it works as well as my ON worked, I'll never go back again. THIS STUFF TASTES AMAZING!!!! I am so happy that I took this leap of faith. You should try it too!!! I wish all protein powders tastes like this one. ... show more
Reviewed in the United States on May 9, 2013 by Tammera Moore
    • Depends on what you want this for
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
I chose this product based on several things. The first factor was taste. I had sampled a casein from Optimum Nutrition that was flavored as "Blueberries and Cream" that tasted, well, god awful. I think that was likely a reflection on the particular flavor and not ON in general, I have taken their Amino Energy which tastes great but is pretty dubious as to its effectiveness. In light of those experiences, I had heard nothing but good things about the taste of Syntha-6 and I can confirm that this stuff does indeed taste damn good. Given the amount of carbs, fat, and "corn syrup solids" in it, I suspected it probably would taste good. Cold Swiss Miss hot chocolate is a good reference for how you can expect this to taste. I've also tried the vanilla flavor and while I prefer the cake batter, vanilla was fairly tasty, didn't have as much of a chemical taste as some vanillas do. Additionally, I have no issues with dairy/lactose/gluten all that stuff so I can't give any reflection on what effects it has on someone with a sensitivity to any of that. The second factor was price; I have never had too much of a budget for these sorts of things. It's cheaper than a lot of proteins that I have seen. Most any protein powder with a reasonable price and good taste is going to contain artificial sweeteners and those things, and this is no exception. Overall, the comparatively high levels of fat and carbs in this mean it is probably best for those looking to gain weight as they train and also for people looking to use these things as meal replacements. Price is decent, making this a good value in my estimation. There are better options out there, but there are also a ton of lesser options as well. ... show more
Reviewed in the United States on June 23, 2014 by Zach Holm
    • Yummy
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
Yumsy
Reviewed in the United States on December 6, 2025 by Kyo-jin Lee
    • Shake
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
My husband and I love this protein powder the quality is great and it mixes well in our protein shakes doesn't leave us with an upset stomach you get a pretty big container for a reasonable price and it worth the money not super sugary but still sweet
Reviewed in the United States on April 21, 2026 by Ashley Baugess
    • Fantastic protein powder
Flavor Name: Chocolate Cake Batter Size: 5 Pound (Pack of 1)
I really really like this protein powder. The flavor is amazing and you can tell it’s quality protein. If you’re like me and you’ve been using protein powder for years, you can tell when it’s poor quality. This is one of the GoTo brands for me. You won’t be disappointed.
Reviewed in the United States on March 14, 2026 by fl1p1081

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...