Quality Collagen is Rare

we aren't just your regular collagen.

"SEPHORA'S FAVORITE K-BEAUTY SUPPLEMENT"-ALLURE

Why Crushed Tonic?

Our mission is to deliver the highest-quality collagen—

in flavors you’ll actually look forward to drinking every day.

Pack of Crushed Tonic Grass-Fed Collagen with bananas and a beverage.

Proven Glow In 30 Days

5g of Collagen a Day

Our Collagen Philosophy

Flavors By Korean Scientists

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Black square placeholder image with no visible details.Black bold text spelling 'EREWHON' on a white background.Nordstrom logo in black text on a white background.

Clinically

Proven:

Double the

Absorption

7 years of research.

Patented collagen.

Proven to hydrate your skin from within, strengthen hair and nails, and deliver visible glow within 30 days.

Clinically Proven

Double the Absorption

Proven to hydrate your skin from within, strengthen hair and nails, and deliver visible glow within 30 days.

Results You Can Feel And Taste

Collagen That

Actually Works

Nostalgic delicious flavors, zero grit, clinically proven peptides. Your daily beauty ritual now starts in the kitchen.

Why you'll love it:

+138% hydration, +153% elasticity in 8 weeks

Nostalgic flavors with 0 to 3g sugar per drink

5g protein peptides hydrolyzed for absorption

0% fillers, 0% grit, 100% glow

Halal + Kosher

0 Metals

Lab Tested

Lab Tested

SHOP

Ships tomorrow if you order before 2 PM PST

Collagen That

Actually Works

Nostalgic delicious flavors, zero grit, clinically proven peptides. Your daily beauty ritual now starts in the kitchen.

Why you'll love it:

+138% hydration, +153% elasticity in 8 weeks

Nostalgic flavors with 0 to 3g sugar per drink

5g protein peptides hydrolyzed for absorption

0% fillers, 0% grit, 100% glow

Lab Tested

Kosher Certified

Halal Certified

Kosher Certified

Lab Tested

SHOP

Package of CrushedTonic Grass-Fed Collagen with bananas and a glass of milk.

Focus Groups

Sip your way to a clearer,

and more youthful wrinkle-free skin.

Focus Groups

Sip your way to a clearer, and more youthful wrinkle-free skin.

Before Crushed Tonic

*Overall Success Score

Skin Smoothness & Softness

Skin Firmness & Elasticity

Skin Moisture

Wrinkle & Fine Line Formation

Est 2017

after

Crushed Tonic

*Overall Success Score

Skin Smoothness & Softness

Skin Firmness & Elasticity

Skin Moisture

Wrinkle & Fine Line Formation

100,000+ Customers

Real People,

Real Results

3rd-Party Tested

No Fillers

Formulated in Korea

Clinically Proven

Our Collections

Meet Our Founder

After discovering collagen through her own skin recovery journey, Sally founded Crushed Tonic to combine real skincare science with comforting, nostalgic flavors — so your daily glow ritual tastes as good as it works.


Sally has also since published her own research guide & cookbook, The Collagen Glow!

From Kitchen Accident to Collagen Obsession.

After a severe burn injury, our founder spent seven years working with Korean labs and nutritionists to rebuild her skin from within.


The result: clinically tested collagen that actually tastes amazing — no fillers, no metals, just results.

OUR COLLECTIONS

BEST SELLER

KOREAN MILK COLLAGEN

$35+

Tastes like milks from childhood — but now with protein & 1/5th of sugar.

SHOP

BEST SELLER

SUGAR-FREE COLLAGEN

Matcha, coffee, hojicha, lucuma, turmeric — all now with collagen.

SHOP

SAVORY COLLAGEN

Rich, comforting, mineral-dense broth to sip and cook with.

SHOP

Discover Your Favorite Flavor

Stop Wasting

Money on Collagen

Powders
You'll End

Up Hating.

We made something you'll actually crave — a collagen that tastes like it belongs in your kitchen, not your medicine cabinet.

WHY OUR COLLAGEN IS SUPERIOR

Trusted by Dermatologists

A headshot of a smiling woman with long, dark hair, wearing a white coat against a light background.

“Collagen is the primary structural protein of the dermis, responsible for skin strength, integrity, and elasticity. With age, endogenous collagen production declines, contributing to reduced firmness and the appearance of fine lines. Hydrolyzed collagen peptides may act as bioactive signals that stimulate fibroblast activity and support new collagen synthesis, helping improve skin hydration and elasticity."

- Dr. Tess Mauricio MD

Celebrity & Board Certified Dermatologist

The book 'The Collagen Glow' by Sally Kim, with a cover showing various healthy foods and ingredients.

"The Collagen Glow presents a clear, research-grounded approach to collagen and ingestible skincare. Drawing from years of product development, clinical review, and collaboration with labs and flavor scientists, Sally breaks down collagen beyond surface-level beauty claims and explains its role in supporting skin, hair, nails, joints, and overall wellness. It highlights a key industry gap — that many collagen products fail not because of the ingredient itself, but because of poor quality, bad taste, and low daily adherence."

- W.W. NORTON

The Science

Behind the Magic

Collagen is the main protein that gives your skin its structure and strength.

Drinking collagen is scientifically proven to boost your body’s natural collagen production— leaving your skin firmer, more hydrated, and visibly smoother with fewer fine lines.

Tastes Like Dessert.

Works like Skincare.

Stylized monochrome image of a wine glass with a green tint.
A green oval button with the number 1 in white.

pour 1-2 tbsps of water in a glass.

Green oval with the number '2.' in white.

add a tbsp of collagen powder.

Green oval button with the number 3 in white.

whisky till fully mixed.

Green oval button with the number 4 in white.

add ice, coffee, milk, etc. to taste.

Tastes Like Dessert. Works like Skincare.

Green circle with text: 'Premium Collagen Designed in Korea Delicious'.

FAQ

Loved by Dermatologists

FAQ

Bowl of soup with chopsticks, Crushed Tonic package, green onions, onion, fish, and spices displayed.