• 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 307 reviews
Dustin G.
Best Protein

Best protein hands down. Great taste and a great product.

Jason H.
Churro protein

Just tried the churro I got today it is super good it's sorta close to element cinnamon roll but with a cleaner mouth feel and taste

Samantha L.
Bananas n Cream protein

One of the best flavors of protein powder I have tasted! All of the Nutrithority flavors are amazing but I really enjoy this 1.

Laura V.
Best tasting protein out there!

I’ve been involved within the fitness industry for many years and have tried a plethora of protein from many different companies. This by far, the 2 flavors I’ve tried so far are hands down the best tasting protein out there!

Thanks for the review Laura, we're glad you like the flavors!!!

Megan B.

By the way others described this protein powder is it would break up in drinks. I tried putting it in my coffee and it clumps together.

Mark K.
Shake, stir, rock n'roll!

The best protein shake ever. I use it to make shakes, stir in my protein over-night oats, add to protein pancakes and roll it in my muffins! It's great for before and after workouts. And don't forget the extra benefit....Jared! He's packed full of great advice and motivation. Thanks Nutrithority!

Thanks for the review Mark, Jared is very knowledgeable indeed. Happy you like the product!!!

Douglas M.
Great Product & Service.

Great taste and texture with prompt delivery.

Thanks for the positive review Douglas, welcome to the family!!

Steve H.J.

Always happy with this product!

Its a consistent winner, thanks for the review Steve!!

Caress H.
Donut and Caramel Coconut Cookies PLEASE!

Ya'll!!! These flavors are sooooo DELICIOUS and SO SMOOTH, yet still HEALTHY! What?!?! How is that possible?!?! I am truly grateful for coming across this line of products and so happy I gave them a try. I am a forever Nutrithority fan!!! Job well done!!! Oh, and customer service is ON POINT TOO! ALWAYS!

You are the best Caress!! Thanks for the review, we're glad you like it

Allen H.
Quality and taste

Amazing taste will definitely be buying more 😋

Thank you Allen!!

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