Available on backorder
Lean Blend® – Unsweetened Certified Grass-Fed Irish Isolate
$57.99
ZERO CARB | ZERO FAT | SEED OIL FREE
// ITEM ON BACKORDER – WILL RESUME SHIPPING BY 10/7/2025 //
Certified 100% Irish Grass Fed Dairy. Seed Oil Free. Unsweetened & Unflavored Isolate!

This product is 3rd party tested. View Heavy Metals Report Here
Size: 2 Lbs (908g). Serving Size: 25g (1 scoop). Servings Per Bag: 36
Protein Per Serving: 23g | Cost Per Serving: $1.61
Ingredients: 100% Grass-Fed Irish Native Whey Isolate.
YOU ARE ABOUT TO ENJOY ONE OF THE BEST UNSWEETENED GRASS FED SEED OIL FREE WHEY ISOLATES!
John’s Killer Protein – Lean Blend® is our Carb Free & Fat-Free Native Whey Isolate from Grass Fed Irish Dairy. Now, free from seed oils.
Our Native Protein is always unsweetened and unflavored and sets the industry standards for Protein purity and quality. Native means our Isolate is gently filtered to provide you the purest, most complete and highest levels of naturally occurring Amino Acids. Cold filtered, undamaged and unbleached.
FUEL YOUR WORKOUTS & RECOVERY WITH OUR 100% CERTIFIED IRISH GRASS FED PROTEIN ISOLATE

We source our ingredients exclusively from small, family-owned farms, and exclusively from Ireland. We gently cold filter our Native Whey Isolate from 100% Certified Irish Grass Fed Dairy. We do this to give you the cleanest tasting, purest Whey Protein Isolate. Our Lean Blend is perfect immediately after your workouts, or as an early morning Breakfast shake.
You will immediately taste and feel the difference in John’s Killer Protein®. This Lean Blend is unsweetened, contains no fillers or flavor additives and blends easily in your shaker cup or blender. Our Lean Blend is formulated to be the best, giving you a wide range of Essential and Branched Chain Amino Acids, 11g and 5g per serving! With John’s Killer Protein®, you will maximize your protein synthesis, recover faster, recover stronger and gain lean muscle mass.
Our promise is to always use the highest quality ingredients and make Protein Blends in their purest form. NO FILLERS, NO MARKETING GIMMICKS, NO GAMES!
THE JOHN’S KILLER PROTEIN® DIFFERENCE:
We filter our 100% Grass Fed Isolate without the use of high heat, bleach, chemicals or processing agents. Our process is not easy and is time-consuming, but it allows us to create a Protein Isolate in its purest form, with an Amino Acid profile of the highest levels, undamaged, and with the most Nutritional Value. This Lean Blend Protein is from 100% Certified Irish Grass Fed Dairy Cows never treated with any Growth Hormones (Certified rBGH and rBST free) and from Milk never treated with any GMO ingredients or additives. Our entire Team at John’s Killer Protein® works hard to build and maintain relationships with a cooperative of small dairy farmers in Ireland who are dedicated to sustainable and Eco-Friendly farming practices and who genuinely care about the well-being of their cows. Our Grass Fed Dairy is sourced exclusively from Irish farms where Cows are free-ranging, raised humanely, and certified through the Irish Board Seal of Approval. Our Lean Blend™ is further Certified by The Non-GMO Project as GMO-Free. Learn more about our story HERE.
BECAUSE OF THIS, WE’RE ABLE TO PROVIDE YOU AN AMAZING WHEY ISOLATE THAT IS:
- Unsweetened and Unflavored Protein
- Seed Oil Free
- Carb Free And Fat-Free
- 100% Natural & Raw (ZERO Artificial Additives, Flavorings or Sweeteners)
- Certified GMO Free (The Non-GMO Project Verified)
- Certified Gluten Free
- Certified Soy Free (Because 93% of Soy is Genetically Modified!)
- Certified Growth Hormone Free (rBGH and rBST free)
- Micro Filtered and Minimally Processed For The Highest Nutritional Value. (Never Acid Washed, Bleached, or Chemically Processed)
- 22g of Protein, 11g of Essential Amino Acids and 5g of BCAA’s Per Serving
- Dissolves Easily (Ideal For Your JKP Shaker Bottle)
We know you work hard and care for your body! You deserve a nutrient that will help you achieve your health and fitness goals. We believe you are entitled to the highest quality Grass Fed Protein Isolate, so we work diligently to source the best ingredients available. We feel that our hard work paid off and are proud to offer you this awesome protein, John’s Killer Protein®.
Hope you enjoy!
















Brittany – Verified Customer –
Great product that I recommend to anyone needing a clean, digestible, and well absorbing protein. I add this to many meals to give my protein requirements a boost. The proof is in the pudding:)
Justitia Pax – Verified Customer –
As with all of John’s Killer Protein products, the quality is outstanding. Everything is pure and processed cleanly. Makes great protein shakes. I happen to combine it with their Nightime Casein, even though that’s not the norm. But I drink a protein shake I make from scratch with their products at least 3 times a week as my first meal of the day. I am not weight-lifting right now because of recovery from surgeries. But I couldn’t go without consuming my delicious protein shake 🙂
Here is my recipe: In a blender put 14 oz of certified spring water, 20 g Lean blend, 20 g Nightime Blend, 2 Tbsp organic, unsweetened cocoa powder (Lake Champlain cocoa is my favorite brand) and blend, then add 2 Tbsp organic grass-fed Half & Half milk, a couple of medium strong squirts of NOW organic Monk Fruit sweetener, a couple of squirts of one of Monin’s new sugar-free TruFlavour sweeteners – my favorite flavor choices at the moment are Hibiscus and Coconut and blend, then add 1 organic banana (75g appx), 40g organic blackberries, 40g organic blueberries and 75g organic strawberries and blend and then add 6 ice cubes made from certified spring water and crush them in the blender and pour into a 20-24 oz plastic chug bottle, and enjoy. Appx 400 cal, 42 g Protein, 46 g Carb, 7 g Fat *and* 45%-50% of necessary daily calcium <–thanks to the quality of John's Killer protein powders. Most friends I make it for love the taste.
Sabina Hart – Verified Customer –
Perfection! Simple, clean, and quality you can feel good about! There’s too much nonsense out there. This is an absolutely outstanding whey isolate – mixes well with everything, no bloating, and smooth texture.
Reema R. Hood – Verified Customer –
look no further. hands down the best there is…clean, no sugars, no additives and just pure protein! you guys have got a customer for life! thank you.
Carla Bing – Verified Customer –
Best isolate.. no aftertaste like others I have tried.
Annabelle G. – Verified Customer –
Such an amazing texture.. so smooth and love how it doesn’t clump up!
Mandy Moreno – Verified Customer –
My fav.. zero carbs and zero sugar? What else can I ask for in a protein supplement?
Mark Mendez – Verified Customer –
Hands down… best isolate!
Tawny Mc – Verified Customer –
Best out there and all I use now.. they were out of stock and I didnt know what to do!! I have checked, and no other isolates are as pure…
Brendon B. – Verified Customer –
Once I tried it… I was hooked. No aftertaste and just tastes so clean.. a must try for sure!
Rosie Fernandez – Verified Customer –
I was very pleased when I received this product. Just the texture of the protein alone was great! I wanted to try it unflavored without adding anything at first and I was pleasantly surprised with the smoothness and taste (yes flavorless, but I was expecting a watered down taste I guess). I think I found my new favorite protein and the fact that it truly is clean is amazing.
Jack F. – Verified Customer –
Best Isolate!! It tastes so pure.. melts in your mouth.. So glad I tried it!
Melo – Verified Customer –
This protein is amazing. It mixes easily in a shaker bottle. I mix it with unsweetened vanilla almond milk. I like that it’s easily digested and doesn’t make me feel bloated or full of gas. I also like that it has no additives just whey isolate. I fee full and satisfied taking this pre or post workout. I also mix it with my pre or post workout oatmeal and it’s really tasty and satisfying that way as well. I just ordered my second bag and also ordered the cacao flavor for my chocolate cravings.
Joel R. – Verified Customer –
Soo pure, and very fresh taste.. Best I have tried and will buy again..
Manuel – Verified Customer –
Love the texture! A really smooth protein powder.. best I have tried !
Megan Reynolds – Verified Customer –
My new favorite product.. the texture is amazing.. literally melts in my coffee..
Jeremiah N. – Verified Customer –
Best way for me to get my protein macros without the fat… such a great product!
Heidi Ramirez – Verified Customer –
Finally found an isolate with no additives! Recommend it for sure.
Vince R. – Verified Customer –
So excited to have found this product and this company. I can really tell the difference in their products, such a clean taste and minimal ingredients too..
Steve M. – Verified Customer –
This product did not disappoint.. I was shocked at how well it blended.. I add to my coffee now every morning as my creamer.. soo good..
Jenny I. – Verified Customer –
I was looking for an Isolate without soy- so glad I finally found one… The taste is flawless!!
Maria B. – Verified Customer –
Amazing texture and clean taste!
Rima R. – Verified Customer –
I sooo wanted to be the first review on here.. lol. I loved this and will buy again, and yes, I do recommend it. thank you for making this amazing product. A must have.
Big Joe – Verified Customer –
Been waiting for this product for so long and I remember seeing a post on your IG page about this months ago… so glad to got mine yesterday and tried it. it is so good and will buy again. love love the new packaging too and my scoop was right on top of the bag… love you guys and thank you for making this isolate. the best there is!!!
Michelle M. – Verified Customer –
YES! get it. I will for sure buy again…