Search  for anything...
BSN

BSN SYNTHA-6 Isolate Protein Powder, Peanut Butter Protein Powder with Whey Protein Isolate, Milk Protein Isolate, Flavor: Peanut Butter Cookie, 48 Servings

  • Based on 3,655 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $12.16 / mo
  • – 6-month term
  • – No impact on credit
  • – 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, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. 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, Apr 30
Order within 2 hours and 15 minutes
Available payment plans shown during checkout

Flavor Name: Peanut Butter


Size: 48 Servings (Pack of 1)


Features

  • ISOLAST ISOLATE PROTEIN MATRIX a matrix of fast and slow release proteins from whey protein isolate and milk protein isolate sources
  • 11G EAAs PER SERVING help refuel and build quality muscle mass
  • GREAT-TASTING the delicious milkshake-like flavors youve been accustomed to drinking from BSN
  • MILKSHAKE CONSISTENCY amazing texture and consistency
  • ANY-TIME FORMULA great for in the morning, pre-workout, post-workout, between meals, or anytime where you need more protein in your diet

Description

SYNTHA-6 ISOLATE is an ultra-premium protein powder consisting of a 50/50 blend of Whey Protein Isolate and Milk Protein Isolate. BSN’s unique ISOLAST protein matrix combines the advantages of both fast and slow digesting protein sources that have had much of the fat, sugar and other undesirable components ‘isolated’ out, making SYNTHA-6 ISOLATE the ideal post-workout recovery shake. SYNTHA-6 ISOLATE provides 25 grams of high-quality protein and the same delicious taste as SYNTHA-6, thanks to BSN's exclusive flavor technology.

Brand: BSN


Flavor: Peanut Butter


Item Weight: 4.01 Pounds


Unit Count: 64.32 Ounce


Recommended Uses For Product: Post-Workout


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 8 x 8 x 11 inches; 4.01 Pounds


Item model number ‏ : ‎ 1058029


Date First Available ‏ : ‎ November 8, 2014


Manufacturer ‏ : ‎ Glanbia Performance Nutrition


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Apr 30

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
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Very Tasty and non bloating
Flavor Name: Strawberry Milkshake Size: 24 Servings (Pack of 1)
I tried the Syntha-6 Strawberry Protein Powder via a friend that recommended it to me, and so far this one is a winner. One of the first things I noticed about it is how easy it is to mix. Whether I used a shaker bottle or a blender, the powder dissolved quickly and smoothly without any clumps. This convenience makes it ideal for quick post-workout shakes or a mid-day protein boost when I’m on the go. I usually just drink it with water and a Banana. Digestibility Another major plus is how gentle this protein powder is on the stomach. I’ve had issues with bloating and discomfort with other protein powders in the past, but this one didn’t cause any of those problems. It’s been a relief to find a product that is not only effective but also easy on my digestive system. Flavor The taste of the strawberry flavor is noice It has a natural, not overly sweet, strawberry taste that blends well with various liquids. I’ve tried it with water, milk, and even almond milk, and each time, it’s been a pleasant and enjoyable drink. This makes it easier to stick to my protein regimen because I actually look forward to drinking it. And here's the thing I don't even like any strawberry flavored anything, so this is a huge thing for me. Conclusion In summary, this Protein Powder is an excellent choice for anyone looking for a tasty, easy-to-mix protein supplement that doesn’t cause bloating. While it’s a bit pricier than some other options on the market, the quality and taste make it worth the investment. I highly recommend giving it a try if you want a delicious and effective protein powder. ... show more
Reviewed in the United States on June 12, 2024 by Xtremee_ghost

  • Good
Flavor Name: Chocolate Peanut Butter Size: 48 Servings (Pack of 1)
Good flavor and good protein. Syntha6 is one of the best proteins on the market
Reviewed in the United States on January 26, 2025 by Amazon Customer

  • Delicious way to add protein
Flavor Name: Vanilla Ice Cream Size: 24 Servings (Pack of 1)
This is a delicious way to add protein to your diet without adding carbohydrates and sugar. I work as a cardiac nurse and we can get pretty busy at work with limited time to eat. Bringing this along is a quick way to get some protein without the added carbs. Eating a lot of carbs make me feel bloated and uncomfortable so for me, the isolate is the way to go. It mixes very well and there is no aftertaste. It's only mixed in 6 oz of water so it can be consumed quickly and back to work I go. I've bought this several times and it's helped a lot. ... show more
Reviewed in the United States on October 13, 2023 by Jim

  • Great product
Flavor Name: Chocolate Milkshake Size: 24 Servings (Pack of 1)
I love the taste! My friend recommended this and she said it was delicious and it really is. I mix it with rice milk
Reviewed in the United States on August 15, 2024 by Judi M

  • Good for drinking with water, terrible in oatmeal
Flavor Name: Strawberry Milkshake Size: 48 Servings (Pack of 1)
This does not work in oatmeal very well. It tastes terrible in oatmeal. By itself it tastes pretty good
Reviewed in the United States on October 7, 2024 by Timi Timi

  • A little healthier
Flavor Name: Peanut Butter Size: 48 Servings (Pack of 1)
As compared with the delicious Edge variety, these isolates are certainly healthier. Less like all bad stuff but a little more protein. Overall, if I’m feeling healthy I’ll use the isolate. But don’t believe for a sec that this’ll taste better than the Edge.
Reviewed in the United States on March 2, 2025 by Ryan Rabon

  • 💯
Flavor Name: Vanilla Ice Cream Size: 48 Servings (Pack of 1)
Some of the best protein on the planet extremely well made. I can feel and see the difference. If you have the money by this stuff It's one of the 👌 👍
Reviewed in the United States on January 23, 2025 by It's better to spend 5 more dollars and get the big one.This one is tiny. Not very bright for supposedly being 1200 my 900 smokes it th

  • Taste disgusting
Flavor Name: Chocolate Peanut Butter Size: 48 Servings (Pack of 1)
This is by far the most disgusting protein powder I have ever consumed my whole life. Sadly this product used taste delicious. BSN has lost its quality over time. I had to dump the thing in the garbage. Luckily I managed to find a way to call costumer support and request a refund. It’s obviously non returned but call costumer support! I’m done with BSN !!!!! ... show more
Reviewed in the United States on December 3, 2024 by Ezzeddin

Can't find a product?

Find it on Amazon first, then paste the link below.