• 100% Whey Protein Isolate
  • Award Winning Taste
  • Ultra High Bio-availability
  • 25g Pure Whey Protein Isolate

the science

Isothority is a cross-flow cold-microfiltered whey protein isolate. Sounds fancy, right? Let's break it down: Isolate is the purest form of Whey Protein available. You get less filler, carbs, lactose, etc. This means it also digests much more easily without stomach issues.

The method by which the protein is extracted is much more precise. Rather than using extreme heat, acid washes, and other harmful processes, we utilize a filtration system to isolate the protein.

This leaves an incredibly clean protein that is easy to flavor, has a great texture, and digests extremely well. There truly is not another protein that is this pure, and tastes this good.

Who is it For?

Everyone. If you are exercising, restricting your calories, or cleaning up your diet - you'll benefit from Isothority. Isothority is especially important after your workout as it will help you recover faster, be less sore, and boost your metabolism.

What Will I notice

This is a tricky question. Here's another way to look at it: What would you notice from eating a chicken breast, or egg whites? In general, you will be less sore after your workouts. Your body will adapt and gain strength and endurance much more easily. You'll also boost your metabolism and stave off hunger more easily when taking a quality protein source in.


How do I use it?

The most important time is after your workout - 1 scoop mixed with 6oz of water (or milk) will do it for most everyone. It can also be utilized at any other time you would need a protein source; as part of a meal, as a milk shake, or just to increase total protein intake for the day.


Customer Reviews

Based on 184 reviews

Isothority - 100% Whey Isolate

Awesome company

Great tasting product, prompt delivery, and a bunch of free samples. I will definitely order again.

Love the peanut butter chocolate!!!

The Carmel coconut isn’t my jam- it’s way too much coconut but I’m in love with the peanut butter chocolate

Thanks Dana! Glad you found one you liked!

Not quite a Samoa, but close!

Great taste and texture. We will definitely buy this again!

Thanks Stef! There's only so far a protein powder can go to compare to a cookie, but I'm glad you liked it!!



Glad you liked it, thanks Valerie!


I love Nutrithority's Isothority protein powders (have tried, cookies and cream, whipped strawberry, and chocolate peanut butter). Out of all the protein powders I've tried--and there have been many--this brand offers the most efficient delivery of protein per gram of powder, without sacrificing a bunch of carbohydrates and fats, or flavor. This powder makes meeting my daily protein (and dessert) goals easy and delicious.

Thank you so much Lauren!

So Yummy!

The product really tastes great! Independently verified by my family members! The caramel coconut cookie flavor is delicious! I also loved the strawberry and blueberry flavors so I picked up those as well!!!

Thanks Alma! Glad you like the flavors !!

Isothority caramel coconut cookie

This flavor taste exactly like my favorite cookie. My protein shake has become my guilty pleasure without the guilt.

Thanks Kim! Glad we aren't the only ones.

Great quality, amazing taste!

Going through off-season‘s and prep throughout the year, I’m always looking for things that are not only amazing tasting but also great quality. This is one of the best. Always feels very clean and never causes bloat or anything negative for me. If you’re looking for something new or looking to change up your whey isolate game, give this one a try. You won’t be disappointed!

Thank you so much Kari!

Sweet overload

The Samoa is my favorite cookie so I had high high hopes for this powder and it's awful. Way way too sweet but zero flavor. Very disappointed. I inquired about a return and have also heard nothing.

Sorry you weren't a fan of the Caramel Coconut Cookie. I sent you an email so we can get that swapped out for you.

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