Syntha-6 RTD

Syntha-6 RTD

Ready to Drink Protein Blend for Building Muscle*
Designed to Support Muscle Growth, Recovery, and Nutrition*
6.8  out of 10  (110 Reviews)
1 Size
12 - 14.5 Fl. Oz. Bottles
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2 Flavors
Chocolate Milkshake
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Price: $34.98  ($2.91 / Serving)
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Product Overview

BSN Bottle
  • Supports Lean Muscle*
  • Supports Muscle Protein Synthesis*
  • Helps Kick-start the Recovery Process*
  • Supplements Nutrition

Push your recovery & rebuild on the go.*

Serving Icon

protein per serving

Muscle Icon

fat per serving

New Formula. Improved Taste & Texture.

SYNTHA-6® Ready-to Drink (RTD) is a premium protein shake that delivers 40 g of muscle building protein to support your recovery.* Whether in the gym or on the go, help fuel your body before, during or after workouts with superior flavor that will have you believing it’s your cheat day with every sip.

Why take SYNTHA-6® RTD?

Daily adequate protein intake is important with any regular exercise regimen. Protein is needed to help repair muscle broken down during exercise and build new muscle. Using a quality protein powder will help supplement the daily amount of protein required by your body and help you to reap the benefits from every training session. Whether you are new to working out or you are a competitive athlete, SYNTHA-6® RTD delivers high-quality protein in a convenient ready-to-drink formula that will help you rebuild, repair and return to push some more.*

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Ratings & Reviews

Overall Rating
110 Ratings
Verified Buyer Rating
8 Ratings
Average Flavor Rating
2 Flavors
Top Rated Flavor
Chocolate Milkshake
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

BSN as always is a great product. But if the price goes up any more i'll have to find a less expensive option.

  • 10 Chocolate Milkshake

I read some of the reviews on this product & I didn't think it had a bad chemical after taste. Not sure if it was because I had it cold or shook it well, but it taste fine to me. The only thing I didn't like about it was the thick texture.

  • 2 Chocolate Milkshake

I have had every flavor. Some actually went bad and separated. Holly crap bad taste if they get a temperature change. The product was originally made well with ingredients so did the major bloating that came along with drinking this. I had 4 returns from disgruntled clients who had similar problems. We all tries these when they first came out and then the relaunch of this chocolate about 6 months ago.


Syntha-6 is hands down the tastiest Protein Shake on the market! Delicious!

  • 10 Chocolate Milkshake

Love these little suckers! One after my weights session as a post workout. Has a few carbs but after my workout that's ok. Tastes better than other RTDs for sure. Glad my gym has them and that's the only place I drink them. If I were to buy a pack I wouldn't be able to drink just one at home knowing they are in my fridge. All BSN products are top notch in my book.


If I'm away from home working out across town I would purchase the Vanilla Syntha-6 RTD. Now I've had this happen 4 times+ now and I've gotten to where I'll always have my Syntha-6 on me stored in my car. I stopped after a workout and got a Vanilla Syntha-6 RTD and it tasted like spoiled milk. It also had chunks in it like curd in spoiled milk. I turned around went back to the store and they agreed and allowed me to exchange it. I opened it inside the store with the same result. Spoiled milk smell & chunky. I actually went thru their entire inventory with the same result. This has happened at least 4 times now at different stores. What's going on BSN? I love your product fellas but you must be consistent! Jeff

Verified Buyer

Very disappointed. We use BSN Syntha 6 powders and have been very pleased. This RTD tastes is horrible- and leaves a bad after taste.

Verified Buyer

I don't know how good the protein is, because I can't get past the taste. This has the strongest chemical taste of anything I've ever had in my life; and the smell makes me slightly light-headed.


The consistency is amazing. Thick but not too thick and not watery. The flavor is disgusting. The worst flavor of any protein supp I've ever had. Left a disgusting metal after taste. Two sips and I was done. So disappointed because that is a consistency I haven't been able to find.

Verified Buyer

High protein and good taste. No after tastes, Love the Syntha 6 products.

Verified Buyer

This product has a horrible after test and is really hard to get down.

Verified Buyer

Worst taste ever!


I was shocked how bad the strawberry flavour tasted. It was like drinking salty cheese with chemical taste. Not planning to buy again.

Verified Buyer

This is basically a high protein RTD version of the powder. It tastes goods, and works great when I am away and need to supplement protein intake on the go. The only downside is that it is quite high in sodium.


i am comparing this Syntha6 RTD drink to BSN True Mass powder. First of all the True Mass is delicious. Mixes very easy. I tried the syntha 6 to save on time. Unfortunately i will go back to true mass. The RTD vanilla flavor was awful. Left a very chalky after taste. After the first 2 sips, i had trouble finishing the remaining. True mass difinately taste great and this syntha6 RTD does not compare. Gonna try the syntha 6 powder to confirm its only the RTD that taste awful.

12 - 14.5 Fl. Oz. Bottles
12 - 14.5 Fl. Oz. Bottles
12 Servings | $2.91 Per Serving

What's in BSN Syntha-6 RTD

12 - 14.5 Fl. Oz. Bottles Chocolate Milkshake
Serving Size 1 Bottle (429 mL)
Servings Per Container1
Amount Per Serving % Daily Value †
Calories 210       
Calories From Fat 20       
Total Fat 2 g 3%
Saturated Fat 1 g 5%
Trans Fat 0 g       
Cholesterol 35 mg 12%
Sodium 75 mg 3%
Potassium 440 mg 13%
Total Carbohydrates 8 g 3%
Dietary Fiber 3 g 12%
Sugar 3 g       
Protein 40 g 80%
Vitamin A 0%
Vitamin C 0%
Calcium 100%
Iron 8%
† Percent Daily Values are based on a 2,000 calorie diet. Your daily Values may be higher or lower depending on your calorie needs.
Water, Protein Blend (Milk Protein Concentrate, Whey Protein Concentrate), Cocoa (Processed With Alkali), Natural And Artificial Flavors, Cellulose Gel, Sucralose, Cellulose Gum, Acesulfame Potassium, Carrageenan.
Allergen Information:
Contains Milk Ingredients.

Directions For Syntha-6 RTD: Drink 1 serving (16.9 oz) daily to increase your protein intake or as needed to satisfy your protein or muscle-enhancing requirements.

* 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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