Syntha-6: An In Depth Analysis

updated January 1, 2019

Syntha-6 is one of the most popular protein products on the market right now. Many people consider it to be the best tasting, and most complete protein source that is out there. In this article we go in depth on Syntha-6 to find out how good it really is.

The Manufacturer


Syntha-6 is the flagship protein product of BSN (Bio-engineered Supplements & Nutrition), a well established supplement manufacturer that manufactures their products out of their illinois factory facilities. BSN sponsor a number of high profile pro athletes including Conor McGregor.

BSN have six different protein powder products, in addition to a range of protein bars and pre-made protein shakes. Syntha-6 is marketed as an ‘ultra premium lean muscle protein powder.’

Nutritional Information

Each Scoop of Syntha-6 is 44 grams. Within that total you get 6 grams of fat (4 grams started), 15 grams of carbs (5 grams dietary fiber) and 22 grams of protein.


Syntha-6 also includes some calcium, phosphorous, sodium and potassium.

This product is classified as a meal replacement powder. It is 50% protein, 30% carbs and 20% fats. That makes an ideal meal replacement. So, this is not to be taken in addition to a meal, but instead of a meal.

As we can see from the nutritional profile, Syntha-6 is neither high or low carb. It has a lot less crab content than you would find in your typical post workout protein shake.

If you are a little concerned about the high carb count in Syntha-6, you might consider a couple of other BSN protein products:

Each serving of Syntha-6 provides you with 15 percent of your daily calcium needs, along with 8 percent of your iron needs and 6 percent of the magnesium that you need every day.

On the down side, each scoop will put 220 milligrams of sodium into your body along with 70 mg of cholesterol.​


This product is called Syntha-6 because it is a blend of six types of protein. These are:

  • Whey protein concentrate
  • Whey protein isolate
  • Calcium caseinate
  • Micellar casein
  • Milk Protein isolate
  • Egg albumin

The blend of protein powders pretty much covers all of your bases. You will get a good balance of fast digesting whey proteins for your immediate post workout needs, along with slower digesting casein protein that will provide gradual protein absorption into your muscle cells while your muscles are repairing and rebuilding during the night-time hours

In addition to these protein blends, Syntha-6 also contains:

  • Sunflower powder - this is a blend made up of sunflower oil, corn syrup solids, sodium caseinate, mono and diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, and Tocopherols)
  • Polydextrose
  • Cocoa Powder processed with Alkali
  • Natural & Artificial flavors
  • MCT Powder
  • Lecithin
  • Digestive enzymes

People with allergies should note that this product contains milk, egg, wheat and soy (lecithin) ingredients. It does also contain bromelain and papain, which are enzymes that help with digestion.

Some people will be put off by the artificial sweeteners, thickeners and stabilizers on the ingredients list. The truth of the matter, however, is that they will not cause you problems unless you are drinking an excessive amount of this meal replacement. You should only use Syntha-6 to replace one meal each day.​

Taste and Mix

Syntha-6 comes in 3 sizes; 2.9 pounds (30 serves), 5 pounds (50 serves), 10 pounds (100 serves). The product comes in eleven flavors. All eleven flavors are available in the small tub, 7 of the eleven are available in the 5 pound tub and just two of them (chocolate and vanilla) are available in the 10 pound bag.

Taste and Mix

The eleven flavors are:​

  1. Banana
  2. Chocolate Cake Batter
  3. Chocolate Chip Cookie Dough
  4. Chocolate Milk Shake
  5. Chocolate Mint
  6. Chocolate Peanut Butter
  7. Moccachino
  8. Orange Smoothie
  9. Strawberry Milkshake
  10. Vanilla
  11. Cookies N’ Cream

By popular consensus Cookies N’ Cream is hands down the best of the eleven flavors. Many people would go so far as to say that it is the best tasting protein powder on the entire market. However, all of the flavors are delicious. They are among the few flavors out there that are actually really good when mixed with water.

Syntha-6 edge

In terms of how Syntha-6 mixes, a few shakes of the shaker bottle are all it takes to mix the powder into your liquid. It will produce a very smooth blend that is free of any clumps. However, the Cookies N’ Cream flavor does include actual pieces of cookie which will sit on the bottom of your glass or blender bottle.

The great mixability of BSN Syntha-6 is thanks to the synthetic thickeners, stabilizers and other enhancers like soy lecithin.

One thing is guaranteed - with eleven great favors, you will never get sick of the taste of Syntha-6. And if that’s not enough, BSN have a habit of releasing one or two additional flavors each year as special limited edition flavors.​


As this is a meal replacement product, you will have some issues with Syntha-6 if you are lactose intolerant. It does contain lactose. This will cause a certain amount of gastro-intestinal upset if you are lactose intolerant. Those who are not lactose intolerant will have no problems with this product. It contains digestive enzymes that help the body to break down the six types of protein.

The only problem you may find is that you are drinking too much Syntha-6 because it simply tastes so good. If you are not training hard in the gym, that could lead to fat gain. However, if you are putting in the hard work on the gym floor, then Syntha-6 is going to help you to build some serious muscle mass.​


  • Low cost
  • Contains 6 protein blends
  • Great taste
  • Effective


  • High in sodium, cholesterol and carbs
  • Artificial flavors
  • Contains lactose


BSN Syntha-6 is a very good meal replacement product. We love the fact that it includes such a wide range of protein types and the huge range of fantastic flavors that it comes in. Just be aware that the carb count is designed for a meal replacement, not a postworkout. It may also cause some issues for people who are lactose intolerant. Everyone else will have no digestive problems. Overall, this is an impressive meal replacement protein powder.