4.94 · 65 reviews
GRASS FED WHEY ISOLATE PROTEIN SHAKE

Iso-Smooth™

Premium grass-fed whey protein isolate delivering 30g of high-quality protein to support muscle growth, recovery and daily protein needs.

Triple Chocolate Tahitian Vanilla Bean
$79.99
$2.86 per serving
Select Quantity: 1 Pouch
  • 1 Pouch 28-Day Supply $79.99 Per Pouch
  • Most Popular 2 Pouches 56-Day Supply $75.99 Per Pouch Save 5% + Free Shipping
  • 3 Pouches 84-Day Supply $71.99 Per Pouch Save 10% + Free Shipping
  • PHD FORMULATED
  • 3rd PARTY TESTED
  • 60-Day Guarantee
  • Free Shipping Over $75

Discover Iso-Smooth™

  • 0GADDED SUGAR
  • 100% GRASS-FED WHEY ISOLATE
  • 30gPROTEIN PER SERVING

Loved by our Athletes

Iso-Smooth is hands-down my favorite protein on the market. The taste is unreal, and it’s one of the few that doesn’t leave me feeling bloated, gassy, or sluggish. With 30g of grass-fed whey and barely any sugar, it’s top shelf.

Steve Nesrallah

Iso-Smooth tastes so good it almost feels like I shouldn’t be allowed to have them while dieting. It mixes effortlessly with just water, and I also love adding it to my oats when I want something more filling. The texture stays smooth and the flavors are actually enjoyable, which makes it easy to stay consistent. The macros make it super easy to hit my protein goals.

Christina Hardway

I love incorporating Iso-Smooth in my daily stack. It’s a great way for me to get a quick 30g of protein when I’m on the go during busy days. All of the flavours taste great and mix well.

Maya Nowakowski

Iso-Smooth honestly makes hitting protein goals way easier. It tastes legit, actually craveable, and mixes clean. That’s huge when I’m on the go or in between clients.

Jonni Shreve

Most protein powders are either good for you or great-tasting. Iso-Smooth™ is both.

  • Fast Absorbing Rapid digestion and absorption help maximize muscle protein synthesis —when it matters most.*
  • Virtually Lactose-Free, Low Fat, Low Carb Only the good stuff—no bloat, no stomach issues, no fillers. Made for everyday use and easy digestion.*
  • Grass-Fed Whey Isolate Iso-Smooth is made only with whey isolate protein sourced from grass-fed, grass-finished, and hormone-free American dairy cattle.

What’s Inside

Every Blue Star Nutraceuticals® formula starts with one question: What does it take to get real results? That’s why every ingredient inside—every dose, every compound—is carefully selected, precisely measured, and backed by science. Developed by PhDs. Trusted by athletes. Built to work.

AT A GLANCE

Combat
Muscle Loss*
Slow Recovery*
Protein Deficiency*
Digestive Discomfort*
Poor Taste*
Low Protein Purity*

What Iso-Smooth™ Does For You

Iso-Smooth™ isn’t just another protein powder—it’s a high-performance fuel source designed to optimize recovery, growth, and training results. With ultra-clean ingredients, fast absorption, and exceptional taste, it’s built to support your goals—every scoop, every day.*
  • Build & Repair Muscle Supports muscle growth and post-training recovery with fast-digesting, high-leucine whey protein isolate.*
  • Stay Lean Low in carbs, fat, and calories—Iso-Smooth™ fuels lean muscle gains without adding bulk where you don’t want it.*
  • Digest Clean Virtually lactose-free and highly filtered to remove impurities that cause bloating or discomfort.
  • Enjoy It Every Time Engineered for unbeatable taste and texture—so you actually look forward to drinking your protein.*

Science of Iso-Smooth™

Iso-Smooth™ is a single-source whey protein isolate, selected for purity, absorption, and amino acid profile. Every scoop is built around one purpose: delivering ultra-clean, high-performance protein. It’s formulated with precision, tested for purity, and refined for taste. That’s why we publish a full scientific whitepaper—so you can see exactly what’s inside, and why it works. If we know it, you should too.
  • 3rd Party Lab Tested
  • PhD Formulated
  • Science Backed Ingredients
The Science Behind Iso-Smooth™ VIEW THE WHITEPAPER
59% Higher EAA Percentage
115% Greater Biological Value
THE DETAILS

When You’re This Clean They Call You Iso-Smooth™

Most protein powders cut corners on purity, flavor, or digestion. Not here. Iso-Smooth™ delivers 100% whey isolate with virtually no lactose and no fillers. Just clean, powerful protein—designed to fuel serious progress. <b>It’s not just smooth. It’s Iso-Smooth™.</b>
    • High in Protein
    • Low in Sugar
    • 3rd Party Lab Tested
    • Hormone-Free Whey Isolate
    • Tastes Delicious

How Iso-Smooth Works

Protein is essential—but quality matters. Iso-Smooth™ is designed for rapid absorption, high amino acid delivery, and easy digestion—supporting faster recovery, better growth, and more consistent results.*
  • 01 Rapid Digestion Absorbs quickly to deliver amino acids to muscle when your body needs them most—especially post-workout.*
  • 02 Clean Recovery Helps rebuild torn muscle fibers and reduce breakdown after training.*
  • 03 Daily Muscle Support Delivers essential amino acids and BCAAs to help preserve lean muscle mass between workouts.*
  • 04 No Compromise Virtually lactose-free, low-carb, and delicious—so you don’t have to choose between taste, comfort, and performance.*

Iso-Smooth™ FAQs

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BUILD YOUR STACK

Goes great with Iso-Smooth™

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Explore Your Goals

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
VERIFIED

User Reviews

4.90
1389
35

Customer Reviews

Based on 65 reviews
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98.5
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Paul (Mississauga, CA)
Amazing taste, zero clump.

Been using Iso-Smooth exclusively for awhile now. Always great tasting, never any clumping. Pricing is great for the quality.

Between Shake One & Iso-Smooth, my days are covered between meals for high quality protein with a great profile to match goals.

C
CP (Toronto, CA)
Best Protein Ever!!

Thanks Blue Star for being the only company to develop and deliver a high quality protein product that has an incredible flavour, texture, that is easy to digest and that actually does what it says “builds and supports the burn” for lean body mass.

Just love this product!!

Try it you will never regret it!!

D
Dave H. (Cobourg, CA)
Taste great mixes great with shaker keeps you full and ready to workout!

Fantastic, love the taste and give me energy for my day and workout!

K
Kari A.
Best protein Powder

I've been using Build and Burn Iso-Smooth every day, and it has become a staple in my routine. The Tahitian Vanilla Bean flavor is absolutely delicious—smooth, creamy, and not overly sweet. It tastes great on its own with water or milk, and it blends perfectly into smoothies and other recipes.
As someone who works out regularly and prioritizes hitting my protein goals, I appreciate the high-quality protein content and clean ingredients. It mixes effortlessly with no clumps or gritty texture, and I find it easy to digest with no stomach discomfort.
What I love most is that it's a product I genuinely look forward to having every day. It makes staying consistent with my nutrition simple and enjoyable. If you're looking for a premium protein powder that delivers on both taste and quality, I highly recommend giving this one a try. I'll definitely continue purchasing it and would recommend it to anyone looking to support their fitness and health goals.
💪 A daily user and very satisfied customer.

B
Brett J. (Goderich, CA)
Best Tasting Isolste Ever!!

Bluestar Nutraceuticals ISO Smooth has easily become my go-to proteins.

Mixes insanely smooth with no clumps, tastes unreal, and doesn’t leave that heavy bloated feeling most proteins do.

The texture is actually creamy instead of chalky, and the macros are perfect for staying on track while still enjoying it.

Whether it’s post-workout or just getting extra protein in during the day, this stuff delivers every time.

Definitely the best whey isolates I’ve tried. 💪🔥

S
Seb B. (Montreal, CA)
Il a très bon goût sa fais le travaille

Je suis très sastifais

I
Iron B. (Toronto, CA)
Top Protein!

Without a doubt best protein I've personally had. I've tried many high quality powders and Iso-Pro has been the best for me.

F
Floyd P. (Charlottetown, CA)
Protein Powder

Great product, i've been using this product for several years.

D
Darren (Mississauga, CA)
BRING BACK MY FLAVOUR for 5 stars

My rating itself wud be closer to 4.5 but there's no half stars...the product itself is great and smooth to taste as the label suggests...easy on digestion as well...honestly I dont have any complaints so far except for the fact my go to flavour (orange creamsicle) is now m.i.a. and i wanna know why...ive been buying that flavour for a while and all of a sudden its gone...bring it back please!! Even if its just for me ill keep ordering that flavour...im not a fan of chocolate

M
Michael P. (Olds, CA)
Great Product

I have been a fan of this protein powder for quite some time now.
Being over 50 it's important to me to maintain muscle mass and good health so I've been investing in the great products here.
My most recent purchase, however, was a disappointment as this came in a BAG instead of the plastic container.
Not sure if they are trying to cut back on plastic but the twist-top canister was 100X better!
I tried using the bag earnestly but the closing zipper never really closed properly no matter how much I cleaned it - so I had to transfer it all to my Shake One canister and remove the label.
Otherwise, a great source of protein!