• 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 253 reviews
Deanna G.

Love this stuff. I use it in protein shakes and have also used it to make protein muffins. So far all the flavors I’ve tried have been delicious.

Thank you Deanna!

Richard W.
Dangerously delicious

Man, the coconut cookie is gooood! Only drawback is that you can't put it in something hot like coffee or it just curdles, but that's the nature of protein. I love dipping pieces of banana or apple in it.

Thank you Richard!

As for the coffee, I tend to find that if I mix the protein powder with a little water or milk (to make it a cream-like texture to replace the coffee creamer) that it doesn't curdle and mixes easily. Adding it directly to hot coffee will basically cook the protein, so you have to work around it.


Austin B.
Whipped Cream Strawberry

The Whipped Cream Strawberry Flavor is phenomenal. Might have been the fastest tub of protein I’ve ever gotten through and thoroughly enjoyed every shake.

Try mixing it with almond milk or any milk of preference and a handful of frozen strawberries in the blender.

Thanks Austin!

Seth B.

I like the isothority protein great tasting flavors and blends better than other proteins I have tried before

Thanks Seth!

Ryan P.

Never received it

Bryan G.


Thanks Bryan!

A j.S.
Girl scouts would like to talk to you!

Ordered the Carmel coconut cookie isothority protein for myself and It is absolutely delicious and I recommend it to everyone!!

Thanks AJ!

Toriana W.
Class by itself

I have never come across a protein shake that has so much flavor, it’s not gritty and taste just like it’s labeled. I love chocolate and peanut butter and man Nutrithority hit the nail on the head. I am NEVER switching all other competitors have big shoes to fill.

Thank you Toriana! Glad you like it!


I am very pleasantly surprised with how good the flavor is and how smooth the protein mixes up! So good!!

Thank you!

Tiffany S.
Peppermint Mocha Delicious

I wasn't sure about the flavor but with the holidays around, I wanted to give it a try. It is absolutely delicious!

Thanks Tiffany! We should have that flavor back next year!

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