Complete Amino Profile
All 9 essential amino acids for muscle recovery and growth.
Premium plant-based protein that tastes incredible and delivers complete nutrition.
KOS is different because we treat plant-based nutrition like performance fuel, not wellness fluff—clinically studied ingredients, transparent formulas, and flavors you actually want to drink, built for people who care about results and what they put in their bodies.
KOS tastes better because we engineer flavor first, not last—using smoother plant protein blends (no chalky pea overload), natural sweeteners balanced for the right mouthfeel, and real flavor ingredients instead of masking agents.
Translation: less grit, no weird aftertaste, and flavors that feel like a treat, not a chore.
Choose KOS because we deliver clean, high-performance plant nutrition that actually tastes good—made with thoughtfully sourced ingredients, transparent formulas, and flavors you’ll look forward to drinking every day, not force down.
As Featured In
Simple as 1-2-3
Simple as 1-2-3
The KOS Difference
All 9 essential amino acids for muscle recovery and growth.
Digestive enzymes ensure smooth absorption without discomfort.
No artificial sweeteners, colors, or mysterious fillers.
Rich, smooth flavor without the chalky plant protein taste.
The KOS Difference
All 9 essential amino acids for muscle recovery and growth.
Digestive enzymes ensure smooth absorption without discomfort.
No artificial sweeteners, colors, or mysterious fillers.
Rich, smooth flavor without the chalky plant protein taste.
Finally a plant protein that doesn't taste like dirt. The chocolate flavor is amazing and it mixes perfectly smooth. No bloating at all!
Been using KOS for a year now. The subscription makes it so easy and the savings add up. Best plant protein I've ever tried.
As a nutritionist, I'm picky about ingredients. KOS checks all my boxes - organic, complete aminos, no junk. I recommend it to all my clients.
Switched from whey and never looked back. Better digestion, same great results in the gym. The vanilla is my daily go-to.
I was skeptical about plant protein but KOS changed my mind. Mixes great in my morning smoothie and keeps me full until lunch.
Great protein, great taste. Only wish they had more flavor options. The chocolate PB is incredible though - tastes like a Reese's!
"Finally a plant protein that doesn't taste like dirt. The chocolate flavor is amazing and it mixes perfectly smooth. No bloating at all!"
"Been using KOS for a year now. The subscription makes it so easy and the savings add up. Best plant protein I've ever tried."
"As a nutritionist, I'm picky about ingredients. KOS checks all my boxes - organic, complete aminos, no junk. I recommend it to all my clients."
"Switched from whey and never looked back. Better digestion, same great results in the gym. The vanilla is my daily go-to."
"I was skeptical about plant protein but KOS changed my mind. Mixes great in my morning smoothie and keeps me full until lunch."
"Great protein, great taste. Only wish they had more flavor options. The chocolate PB is incredible though - tastes like a Reese's!"
Everything you need to know about our product.
Yes! KOS delivers all 9 essential amino acids in optimal ratios. Our blend of pea, quinoa, flax, pumpkin, and chia creates a complete protein profile comparable to whey.
No. We include digestive enzymes (bromelain and papain) specifically to prevent bloating and ensure smooth digestion. This is one of the most common compliments we receive.
Choose your delivery frequency (1, 3, or 6 months) and save up to 20%. You can skip, pause, or cancel anytime through your account. Subscribers also get free shipping on every order.
Yes. KOS Organic Plant Protein is USDA Certified Organic, Non-GMO Project Verified, and third-party tested for purity and potency.
KOS has a rich, smooth flavor without the chalky or gritty texture common in plant proteins. Our chocolate tastes like a dessert, and our vanilla is creamy and versatile for smoothies.
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