GLP-1 Rebuild · for men on a GLP-1

Stop settling for protein shakes you can't finish.

Collagen is the protein your skin and joints are built from, and your body has been making less of it since your mid-twenties. One scoop in your morning coffee adds 20 g of collagen, which is 18 g of protein, and you won't taste it.

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Free shipping, lower 48 Refund on your first tub

"A scoop goes in my first coffee and I don't think about it again. It's the first supplement I've kept up for longer than a month."Nick · Founder, Vytafast

Vytafast GLP-1 Rebuild Collagen Peptides, grass-fed hydrolyzed bovine collagen, 280 g tub

20 gCollagen per scoop

18 gProtein

70Calories

What changes

On a GLP-1 you eat less of everything, protein included.

Less food is how the drug works. It also makes protein harder to hit. A 2025 advisory from four US nutrition and obesity groups covers protein targets for people on GLP-1s.

16–39%Lower calorie intake seen on GLP-1s. Less food usually means less protein too.

80–120 gA daily protein target the advisory lists as one option. It also cites 1.2–1.6 g per kg of body weight, against a standard RDA of 0.8.

18 gProtein in one scoop, at 70 calories. It's an incomplete protein, so it adds to your whey and eggs and doesn't replace them.

First two figures: Mozaffarian D, et al. Nutritional Priorities to Support GLP-1 Therapy for Obesity. Am J Lifestyle Med, 2025. Joint advisory from the American College of Lifestyle Medicine, American Society for Nutrition, Obesity Medicine Association and The Obesity Society. It does not discuss collagen or endorse any product. The 18 g is from the product label.

The case for a scoop

Why collagen fits a GLP-1 routine

01 / Protein

18 g you can get down

It's dissolved in your coffee, with no flavor and 70 calories, so there's no meal or shake to finish when food doesn't appeal.

02 / Skin

The main protein in your skin

It gives skin its structure.

Supports skin elasticity.*

03 / Joints and bone

Built on collagen too

Tendons, cartilage and bone all rely on it.

Supports healthy bones and joints.*

04 / The limit

Keep lifting

Collagen isn't a complete protein, so it won't replace whey or eggs. Keep training, keep eating complete protein, and count this on top.

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*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. Individual results vary.

The protein that fell off the menu

People used to eat the whole animal. Now it's chicken breast and a protein bar.

Skin, tendons and bones used to go in the stockpot. Today's diet has almost none of that, even when the protein count looks fine.

How collagen ended up in the beauty aisle

Then the supplement industry decided collagen was a women's product. It came in pink tubs, flavored like vanilla cake, with a promise about glow on the front. Nobody made it for the guy at a desk who's started looking rough on Zoom.

We think it belongs next to the coffee maker

So we made it plain: grass-fed collagen peptides and nothing else, unflavored, in a tub you can stir with a spoon.

Vytafast GLP-1 Rebuild Collagen Peptides tub

Coffee · tea · water

1 scoop / day

0 g sugar · no flavor

Our take

Unflavored on purpose, so it goes in the coffee you already drink.

Plenty of collagen powders are flavored so you'll make a shake out of them. That's one more job before 9 am, and it's why the tub gets abandoned by week two.

This one tastes like nothing. Stir a scoop into black coffee, a latte or tea and it's dissolved in a few seconds, with nothing chalky or sweet about it.

You already make coffee. The scoop goes in it. One a day, in the first cup. Miss a morning and it goes in the afternoon one.

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The two-month run

What eight weeks of daily scoops looks like

It only counts if you keep taking it, so here's how the run goes.

Day 1

Leave the tub where you make coffee. A scoop goes in the first cup. You won't taste it.

Week 1

There's nothing extra to do, so you're still doing it. 20 grams of collagen peptides a day, 18 of them protein.

Weeks 2–4

Peptides give your body the amino acids it uses to build its own collagen. Tub one runs out around day 14.

Weeks 4–8

Research on hydrolyzed collagen follows weeks and months of daily use. Give it the full eight weeks before you decide.

How to use

Three steps. The first one is making coffee.

Step 01

Make your usual coffee

Or tea. Hot or cold both work.

Step 02

Add one level scoop

That's 20 grams. The scoop is in the tub.

Step 03

Stir for a few seconds

Then drink it. Left alone, it can settle at the bottom.

What's in a scoop

One ingredient. Here's the whole label.

Bovine hide collagen peptides, and no blend or "complex" anywhere on the label.

20 gper scoop

Hydrolyzed collagen peptides

From the hides of grass-fed cattle. Hydrolyzed means broken into short peptide chains, which is why it dissolves in a drink. Types I and III, the two your skin, tendons and bones are mostly made of. Rich in glycine, proline and hydroxyproline, the amino acids your body uses to make its own collagen.

Supports skin elasticity.* Supports healthy bones and joints.* Supports connective tissue.*

18 gprotein · 70 kcal

It's protein, with a catch

Collagen has no tryptophan, so it's an incomplete protein and won't replace your whey or eggs. It adds the amino acids those are short on.

0everything else

What's not in it

No flavoring, sweetener, thickener, anti-caking agent or added sugar. Gluten-free, lactose-free, corn-free. Made in the USA from globally sourced ingredients.

Supplement Facts

Serving size1 scoop (20 g)

Servings per tub14

Amount · % DV

Calories70

Protein18 g

Calcium26 mg · 2%

Hydrolyzed Collagen Peptides (from bovine hide)20 g · **

** Daily Value not established.

Other ingredients: Bovine hide collagen peptides.

Keep out of reach of children. Do not use if safety seal is damaged or missing. Store in a cool, dry place. Collagen is animal-derived; this product is not vegan or vegetarian.

Side by side

This tub vs. the collagen you've been offered so far

Same protein. Some of these are a lot more work.

	GLP-1 Rebuild	Flavored collagen powder	Collagen gummies	Bone broth
Collagen per serving	20 g	Check the label, often less	A fraction of a scoop	Depends on the batch
Ingredients	1	A dozen, give or take	Sugar is usually first	Bones, water, salt
Goes in your coffee	Yes, and you won't taste it	Only if you like vanilla coffee	No	No
Time it takes	Stir for a few seconds	Shaker, then rinse the shaker	Chew two or three	A pot and an afternoon
When you're not hungry	It's in your coffee	A sweet shake to finish	Sugar you didn't want	A mug of soup

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NickFounder, Vytafast

Hey, I'm Nick

I buy ads for a living, so I'm at a screen about ten hours a day.

I look rough on the 4 pm call, and every collagen tub I bought ended up behind the cereal. They were flavored, which meant making a shake at 7 am. I'd last about a week.

What I tried

Vanilla collagen powder. Tasted like a candle. The tub stayed full.
Collagen gummies. Basically candy.
Bone broth. Made it once, took all afternoon.

So I put it in the coffee.

I drink coffee every morning whether I want to or not. A scoop goes in the first cup, I stir it, and I'm done. I wanted one ingredient, grass-fed, with no "complex" on the label. So I had one made.

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Pick your run

Try one, or get four and give it the full two months.

Every tub is 14 scoops, one a day. Multi-tub pricing applies at checkout, and shipping to the lower 48 is free.

Two weeks

1 tub · 14 scoops

$39one time

$39 per tub

280 g of grass-fed collagen peptides
See if the habit holds

Get 1 tub · $39 →

Best value Two months

4 tubs · 56 scoops

$119$29.75 / tub

~~$156~~ You save $37

Eight weeks of daily scoops, long enough to judge it
Lowest price per tub we sell

Get 4 tubs · $119 →

One month

2 tubs · 28 scoops

$69$34.50 / tub

~~$78~~ You save $9

A full month, one scoop a day
One for home, one for the office

Get 2 tubs · $69 →

Secure Shopify checkout Ships from the US · lower 48

Questions you probably have

No. GLP-1 Rebuild is collagen peptides and nothing else. It's a dietary supplement made for people taking a GLP-1. It isn't a medication and it doesn't replace one.

It's a dietary supplement, so check with the clinician who prescribes your GLP-1 before adding it, the same as you would with any supplement.

Not that we could find. The studies on hydrolyzed collagen are in other groups of adults. We picked it for men on GLP-1s because it's easy protein that fits a low appetite.

If you can finish one, do. Whey is a complete protein and collagen isn't. This is for the days a shake sounds like a lot: 18 grams with no flavor, in a drink you were having anyway.

No. It's the most common protein in every human body. The marketing went after women first, and that's the only reason it ended up in pink tubs.

In coffee or tea, no. In plain water some people pick up a faint savory note. It dissolves hot or cold, but give it a stir, because left alone it can settle at the bottom of the cup.

Give it two months of daily scoops before you judge it. Studies on hydrolyzed collagen follow weeks and months of use, their results are mixed, and yours may vary.*

The US. Shipping is free to the lower 48, and you'll get a tracking number by email. Alaska, Hawaii and military addresses aren't covered yet.

Stop settling for protein shakes you can't finish.

On a GLP-1 you eat less of everything, protein included.

Why collagen fits a GLP-1 routine

18 g you can get down

The main protein in your skin

Built on collagen too

Keep lifting

People used to eat the whole animal. Now it's chicken breast and a protein bar.

How collagen ended up in the beauty aisle

We think it belongs next to the coffee maker

Unflavored on purpose, so it goes in the coffee you already drink.

What eight weeks of daily scoops looks like

Three steps. The first one is making coffee.

Make your usual coffee

Add one level scoop

Stir for a few seconds

One ingredient. Here's the whole label.

Hydrolyzed collagen peptides

It's protein, with a catch

What's not in it

This tub vs. the collagen you've been offered so far

I buy ads for a living, so I'm at a screen about ten hours a day.

What I tried

So I put it in the coffee.

This is for the guy who

Try one, or get four and give it the full two months.

Finish the first tub. If it wasn't worth it, we'll refund it.

Questions you probably have

Twenty grams of collagen, in the cup you were going to drink anyway.