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BSN Syntha-6 Review

BSN Syntha-6 Protein Powder Review: Is It the Best Protein Powder?

Unbiased BSN Syntha-6 Protein Powder (Re)Review

I did a BSN Syntha 6 review in September 2020. I’ve been doing a monthly protein review for 3 years. Sure, some of the protein reviews have outside the 30-day cutoff. Other protein reviews are posted within the 30-day cutoff. The only reason why I keep coming back to Syntha-6, taste. This is my unbiased protein (re)review of BSN Syntha-6.

As a reviewer with credentials including NSCA Certified Strength and Conditioning Specialist, Precision Nutrition Nutritionist, and CISSN certified by the ISSN, my aim is to provide you with an accurate and unbiased review.

I believe in transparency. It’s important to note that our posts may contain affiliate links. Rest assured that these links won’t cost you any extra, but if you choose to make a purchase through them, we may receive a commission. I am also not affiliated with any protein company.

📖 BSN Syntha-6 Supplement Details

It’s crazy to think I’ve been doing protein reviews for 3 years. What’s the take home message about anything in life?

  • Stay consistent
  • Nothing is ever perfect in life

Remember, having stress means you’re expected to perform. Not everyone has that opportunity. Why am I doing a re-review on BSN Syntha-6?

I gained 20-pounds. Plus, I need to get ready for half-marathon season. First race is in 5 weeks. Being 245-pounds, jogging 13.1 mile is a recipe for disaster. I’ve finished halfs weighing 255-pounds. It’s not fun.

If you want to incorporate an MRE into your dietary plan, checkout my modifed Velocity Diet 2.0 article.

As I wrote in my BSN Syntha 6 review. The actors in Warrior drank Syntha-6 like crazy. The actors transformed their physique drinking meal replacement protein shakes.

I’ve been using BSN supplements for a decade, I think they have a solid supplement line, a good supplement line. Is the taste alone worth buying Syntha-6? Yes. It’s that damn good and it’s the best tasting protein I’ve ever drank. However, I would plan on using it as a meal replacement, mass gainer, or even after a very tough workout of at least 600 calories burned. I would recommend Syntha-6.

Value: 6 out of 10
Protein Spiking: 7 out of 10, (trace amounts)
Mixability: 10 out of 10
Ingredient Profile: 7.5 out of 10
Macro Composition: 7.5 out of 10
Flavor: 10 out of 10

Overall Score 48/60, 80%, B-

The questions that are begging to be answered today in this BSN Syntha-6 protein (re)review

  • Is BSN Syntha-6 protein good?
  • Is BSN Syntha 6 worth your money?

💰 Best Place to Buy BSN Syntha-6

You know what they say? Go big, or go home. I went big on this buy. 10-pounds baby! You already know where my go-to protein purchase HQ is at…AMAZON!

28-Servings (Subscribe & Save)
$41.99, $1.50 per serving ($39.89, $1.42 per serving)

48-Servings (S&S)
$65.99, $1.37 per serving ($62.69, $1.31 per serving)

97-Servings (S&S)
$110.99, $1.14 per serving ($105.44, $1.09 per serving)

Visiting BSN website, the company will provide a list of retailers you can buy BSN Syntha-6. Some online retailers will have different special flavors and pricing. I’ll sound like a broken record.

The 10-pound container is only available in chocolate and vanilla.

😌 Does BSN Offer a Money-Back Guarantee

No money-back guarantee or 100% satisfaction guarantee is listed on the website.

Price: 6. Three years ago, I gave a 6 score. Three years ago, we didn’t have hyperinflation. Your mileage is going to vary on which container you buy. Some companies are only offering 15–20 servings per container at $44.

🤯 BSN Syntha-6 Amino Spiked?

There is no amino acid profile listed on the container. I reached out to BSN for an AA profile. As you would guess, I got the typical response…

Diving into the protein ingredient list and protein nutrition facts. There are no added amino acids, recovery blends, or creatine monohydrate… (JUST WAIT)

Email from BSN's CSR about their proprietary blend protein
BSN Syntha-6 is a spiked protein. “Proprietary blend” most likely means, spiked protein.

What facts are listed on the container?

  • 10g of naturally occurring EAAs

What does that mean to you?

It means that BSN Syntha-6 has 10g of important essential amino acids your body can’t produce. These 10g of EAAs are going to help regulate, build, and stabilize important organ, muscle, and hormonal functions in your body. GREAT…

We are here to know if BSN Syntha-6 is going to build muscle and keep that lean body mass on. Am I right? Here’s the challenge flag!

Picture of Syntha-6 2023 ingredient list. Does not mention Glutamine.
BSN Syntha-6 20203 Formula. No mention of Glutamine.

In 2020, BSN Syntha-6 was posting with their ingredient Glutamine Peptides. Not whole Gluatmine, fragments of Glutamine dumped with the powder.

BSN's MRE protein matrix. Glutamineis listed.
BSN Syntha-6 2020 Formula






Going off of memory, early 2011. I want to say BSN use to state “4.5g of Glutamine” on the label.

Amino Spiking: 5 (Syntha-6 may spiked with Glutamine). I’m surprised that BSN stopped listing Glutamine in their ingredient list. Going off of my review in 2020, BSN Syntha-6 is a spiked protein. A listed 22g per serving, might be an actual 16-20 gram per serving.

🤝 How Does Syntha-6 Protein Powder Shake

Some days, this protein powder mixes like a champ. Majority of the days I got clumping in the shake or beneath the shaker spout. In 2020, I gave a 10 score…

Protein Shake Mix: 8. The ingredient profile HAS CHANGED! The 2020 formula had 20 listed ingredients. The batch I purchased was made in December 2022. 24 listed ingredients, plus the unlisted Glutamine aminos to bump up the protein per serving.

🧪 Syntha 6 Ingredients List

There was an ingredient change to BSN. I’m sure the change is to save money and charge more. The big changes made is the amount of protein in the powder mix.

As I shared with the Redcon MRE Lite Protein Review, FDA states, “ingredients are to be listed in most abundance first.” The top ingredient is going to be listed first, to the least amount at the bottom.

BSN Syntha-6 2020 Formula​BSN Syntha-6 2022 Formula
Whey Protein ConcentrateWhey Protein Concentrate
Whey Protein IsolateCalcium Caseinate
Calcium CaseinateHydrolyzed Whey Protein Concentrate
​Micellar CaseinWhey Protein Isolate
Milk Protein IsolateMicellar Casein
Egg AlbumenMilk Protein Isolate
Glutamine Peptides (Listed)Glutamine Peptides (Unlisted)
Why the change in the protein sources profile? The 2020 version is superior.

What changed? In the 2022 formula, the cheapest proteins are most abundant. The more expensive to produce protein powders are in smaller amounts.

Is BSN Syntha-6 a good post workout protein? The 2022 version no. Neither was the 2020 formula. BSN Syntha-6 is never advertised as a strictly post-workout protein. It does state it’s for “muscle recovery” and “supports muscle building.”

BSN Syntha-6 is a GOOD anytime shake. BSN Syntha-6 is a GREAT meal replacement shake.

With the 2022 formula, you’re getting about the same amount of ingredients. I gave it a 7 in 2020…

For those who’ve followed my initial review and tried BSN Syntha-6 then and now – what differences have you noticed? Do you agree with my observations about the ingredient changes? Your experiences could help others make a more informed choice!

BSN Syntha 6 Ingredients

Full Disclosure: The Amazon listing is inaccurate for the ingredient list. What’s listed on the page is not you will be receiving.

BSN Syntha 6 Protein Matrix Ingredients

IngredientDescription
Whey Protein ConcentrateA protein source derived from whey with a balanced amino acid profile.
Calcium CaseinateA slow-digesting protein derived from milk, often used for sustained protein release.
Hydrolyzed Whey Protein ConcentrateWhey protein concentrate that has undergone hydrolysis, making it easier to digest.
Whey Protein IsolateA highly purified form of whey protein with a high protein content.
Micellar CaseinA slow-digesting protein source that provides a steady release of amino acids.
Milk Protein IsolateA protein source derived from milk with a balanced amino acid profile.
Whey protein was the 2nd most abudant ingredient.

BSN Syntha 6 Remain Ingredients

IngredientDescription
PolydextroseA soluble fiber used to add bulk and sweetness without adding many calories.
Creamer (Sunflower Oil, Corn Syrup Solids, Sodium Caseinate, Mono- and Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols)A creamer blend containing various ingredients to enhance creaminess and flavor.
Natural and Artificial FlavorFlavorings that provide the product’s taste.
MCT Powder (Medium Chain Triglycerides, Silicon Dioxide, Maltodextrin)Powder containing medium-chain triglycerides (MCTs) for quick energy, with additives.
LecithinAn emulsifier often derived from soy, used to improve mixability.
Cellulose GumA thickening agent that helps give the product its texture.
SaltCommon seasoning used to enhance flavor.
SucraloseArtificial sweetener used for sweetness.
Acesulfame PotassiumArtificial sweetener used for sweetness.
The remainin ingredients are flavoring, texture, and thickening agents.

Ingredient Profile: 6.5. Protein formula changes are normal in the supplement industry. Not including glutamine on the ingredient list is shady. BSN Syntha-6 is a meal replacement shake.

✅ BSN Syntha 6 Nutrition Information

Serving size: 47g (About 1 Sccop)
Flavor: Vanilla Milk Shake

Calories: 190

  • Total Fat 5
  • Sodium 180mg
  • Total Carbohydrate 15g
  • Dietary Fiber 6g
  • Total Sugars 4g
  • Protein 22g

Percent protein per serving (Protein per serving /Serving size) = 47% protein per serving

I’m questioning the protein content of this protein supplement. Listed 22 grams of protein is most likely not the actual amount. 

Big scoop for Syntha-6 whey protein, but you get one serving.
Big scoop for Syntha-6 whey protein, but you get one serving.

🍨 Does Syntha 6 Have Lactose?

BSN Syntha-6 is not lactose free. I did experience mild digestion issues, bloating and farting. If this means anything to you, BSN Syntha-6 is considered lacto-ovo-vegetarian. I never had my stomach upset using this whey. Syntha-6 comes with no digestive enzymes associated with protein.

⚖️ Powder Scoop Size

One scoop is 42grams. Plus, you can see a little spillage on the scale. I always get 2 scoops.

When’s the Best Time to Take BSN Syntha 6 Protein Powder?

Can BSN syntha-6 be an effective protein post workout? No. Even though, whey protein concentrate and whey protein isolate are kinds of protein you want for lean muscle development. The amount of pure whey in BSN’s protein matrix are not disclosed. Lack of transparency. 

In my opinion, Syntha-6 is a one trick pony. BSN syntha-6 could be best used as a meal replacement. Still examining the protein matrix, calcium caseinate and micellar caseinate are slow release protein. Even though 22g of protein are listed on the label. The simple mixture of whey, may not be enough to stimulate MPS at one scoop.

Is Bsn Syntha 6 Good For Weight Loss?

In this protein powder review, protein supplementation of Syntha-6 is best used as a meal replacement. BSN Syntha 6 is GREAT and should be used for weight loss.

The 15 grams of carbs, 6 grams of fiber, delay the process of digestion. That is what slow digestiong protein does. Using protein like whey isolate is beneficial post workout. Those proteins have little to no carbs and fat, digests more quickly. These are slow digesting protein

  • Milk Protein Isolate
  • Micellar Casein
  • Calcium Caseinate

Those proteins are more likely to have a higer fat content (Syntha-6 has 6 grams of fat).  With that high fat content, those protien will keep you full due to the long digestion of those proteins. Especially wit the high fiber content.

“Nutrition is key, and I’ve broken down the nutritional profile of the updated Syntha-6. Do these changes impact your decision to use this product? How do you balance taste and nutrition in your protein choices? Let’s discuss in the comments!

Nutrition Facts: 5. I wasn’t doing math in 2020. I wasn’t doing percent protein per serving in 2020. You’re ALMOST getting 50% protein per scoop. Accounting for that spiked Glutamine, BSN Syntha 6 protein powder is closer to 45% protein per amount.

If your goal is to lose weight. BSN Syntha-6 will help you reach your weight goals. I personally feel it’s one of the best weight loss proteins.

😋 Syntha 6 Is One of the Best Tasting Protein

In 2020, I gave Syntha-6 a score of 10 for flavor. That’s not going to change.

I’ve tried all BSN Syntha-6 standard flavors. You can’t go wrong with whatever you pick. Your choices become limited as you start purchasing the bigger containers. Yes, the pictures back up the flavor! Here is a list of all the standard BSN Syntha-6 protein flavors.

Syntha 6 Best Flavors

BananaChocolate Cake Batter​Chocolate MilkshakeChocolate Peanut Butter
Cookies & CreamStrawberry MilkshakeVanilla Ice Cream

Flavor: 10. The best or one of the best tasting protein powders in the market.

🎬 Is BSN Syntha 6 Good?

One of my favorite all-time sports movies is Warrior. If you watch the behind the scene of

Warrior, the two major actors: Tom Hardy and Joel Edgerton. They were drinking BSN Syntha-6 non-stop.

💪 BSN Syntha-6 tastes great
– BSN Syntha-6 is a great meal replacement protein
💪 BSN Syntha-6 has 6g of fiber

With the great, there’s always some bad 😱😱😱

🙀 The 2022 formula of BSN Syntha-6, does not list GLUTAMINE PEPTIDES. If you find a 2019-20 formula, glutamine peptides is a listed ingredient. You know what that means?🙀

BSN Syntha-6 is a spiked protein. That 22g of listed protein might only be 16-20 grams.😒😒😒

I purchased a 10-pound bag of this stuff based off of my movie nostalgia. In this Syntha-6 review, it’s not the best muscle protein powder. 

Your feedback matters! Have my insights on BSN Syntha-6 aligned with your experiences? Or do you have a different take? Share your stories and opinions below – they’re not just helpful to me, but to everyone reading this review.

💥 BSN Syntha-6 vs Redcon1 MRE Lite

Throughout this review, I shared that BSN Syntha-6 is a GREAT MRE. Check out my MRE Lite review, BSN Syntha-6 vs Redcon1 MRE Lite.

In my Redcon1 MRE Lite review, I said that “majority of the protein is coming from collagen.”

Redcon1 MRE Lite lists “beef protein isolate” as the main protein source. Remember, beef protein isolate is collagen.

Pocket Protein Review of Redcon1 MRE Lite

  • Collagen is not great at stimulating muscle protein synthesis
  • Beef protein isolate, collagen, is more likely to increase your BMI
  • Redcon1 MRE Lite did keep my stomach satisfied

Which is a better MRE: BSN Syntha-6 or Redcon1 MRE Lite?

You need to ask yourself these main questions

  • Do you want to keep your hard-earned muscle?
  • Are you lactose intolerant?
  • Is your goal to lose weight?

BSN Syntha-6 is going to be better at building and maintaining your muscle. Syntha 6 is a milk based protein. Redcon1 MRE Lite’s main protein sources are collagen, pea and rice protein.

Remember, pea and rice protein are incomplete proteins. Making it more difficult for your body to digest and stimulate muscle growth.

I experienced different levels of bloating with both products. After consuming BSN Syntha-6, I NEVER felt overly bloated. My stomach never over-inflated balloon.

Calories Comparison of MRE Lite Vs Syntha-6 Protein Powder
  • Redcon1 MRE Lite: 130 calories per serving (260 calories)
  • BSN Syntha-6: 200 calories per serving (400 calories)

Syntha-6 Protein is Better at Building Muscle

Yes, BSN Syntha-6 is a spiked protein. BSN Syntha-6 protein is milked based. That will be better at muscle building. MRE Lite’s main ingredeint is collagen. Collage is not good at muscle building. Here’s the game changer for me…

  • The majority of protein blend comes from casein and whey protein
  • 6g of fiber
  • Great flavors

Winner: BSN Syntha-6

Different MRE Protein Powders

PR Breaker Hitpoint Ultra

If you want a great alternative that isn’t going to skimp on the protein with broken amino fragments. You want Hitpoint Ultra. Lower calories than Muscle Milk. Offered in 2 delicious flavors. Sometimes you can buy closed dated products at a discounted price. Visit PRBreaker.com to purchase (non-affiliate link).

Muscle Milk

Scored 84%. A two-blend protein of whey protein concentrate and milk protein isolate. You’re getting the best of both worlds. However, at 280 calories per serving, that’s hefty. Great value that can be purchase anywhere. Purchase Genuine Muscle Milk.

Syntha-6 Compared to Optimum Nutrition

I’ve used ON’s casein protein. That was over 15 years ago. Just looking at the label of ON casein, you will experience the typical effects: extreme bloating, gas, and discomfort. If you want to compre ON Gold Standard to BSN’s MRE, I would go with Gold Standard. Gold Standard may not be as delicious , but you are getting that 24 grams of protein per serving. Purchase ON Gold Standard.

I’ve suggested some alternatives to BSN Syntha-6, but I’m always on the lookout for more options. If you have any recommendations or personal favorites, please let me know. Your suggestions could be a game-changer for someone.

🎼 BSN Syntha-6 Review Score

Price: 6 out of 10
Amino Spiking: 5 out of 10 (Spiked with Glutamine)
Protein Shake Mix: 8 out of 10
Protein Ingredients: 6.5 out of 10
Nutrition Facts: 5 out of 10
Flavor 10 out of 10

Final Score of BSN Syntha 6, 40.5/60, 68% Not Recommended

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