Backed by 80+ human trials · 60-day money-back guarantee

Lose fat,
not muscle.

A GLP-1 does the hard part. Proco covers the rest — protecting your muscle, filling the nutrient gaps, and helping you feel your best through the changes. Every ingredient dosed to the range used in human trials, and third-party tested.

60-day money-back guarantee Free shipping Cancel anytime
Proco GLP-1 Support Stack
80+ human RCTs reviewed
COA-tested every batch
No proprietary blends
Dosed to the studied range
How it works

Support that fits around your GLP-1.

01

Find your stack

Take the 60-second quiz or pick the complete system. We match you to what the evidence supports for where you are in your GLP-1 journey.

02

It arrives, dosed & tested

Your subscription ships monthly — every ingredient at its studied dose, third-party COA-tested, before you run out. Pause or cancel anytime.

03

Keep the muscle

Protein, creatine, omega-3 and magnesium do their job while you lose — so more of what goes is fat, and you feel better through the changes.

The problem no one warns you about
40%

of the weight lost on a GLP-1 can be lean muscle — not fat — without the right support.

The scale goes down. But what's it made of?

GLP-1 medications suppress appetite so effectively that protein intake collapses and muscle goes with the fat. Research shows up to 40% of the loss can be lean tissue — the exact thing that keeps your metabolism, strength and health intact.

Proco is built to change that ratio: hit your protein, preserve muscle, cover the nutrient gaps, and protect your heart while you lose.

Composition of weight lost
Unsupported
With Proco
Bars show share of loss coming from fat. Illustrative of the mechanism protein + resistance training support in trials.
The system

Four compounds. Each with a job.

No cabinet of pills — just what the evidence supports for life on a GLP-1, dosed to the studied range and tested every batch.

Best value · core stack
Proco GLP-1 Support Stack

The GLP-1 Support Stack

Whey isolate · creatine · omega-3 · magnesium — the four essentials in one stack.
€99 €135.60 Save €36
The four essentials — €36 less than buying them separately.
60-day guarantee Free shipping Cancel anytime
Shop the stack
Whey Isolate
Muscle

Whey Isolate

Protect muscle
25G PROTEIN / SERVING
€49.90
Add
Creatine Monohydrate
Strength

Creatine Monohydrate

Preserve strength
3–5G / DAY
€33.90
Add
Omega-3 EPA/DHA
Heart

Omega-3 EPA/DHA

Heart & metabolic
180 EPA · 120 DHA
€24.90
Add
Magnesium Glycinate
Sleep & cramps

Magnesium Glycinate

Energy, sleep & cramps
MAGNESIUM GLYCINATE
€26.90
Add
60
Day promise

Try it for a full 60 days. Risk-free.

These aren't quick fixes — creatine takes three to four weeks to saturate, and muscle preservation plays out over a full cut. So we give you long enough to actually feel the difference. If Proco isn't for you within 60 days, we'll refund you. No forms, no hassle.

Start risk-free
Evidence-first, always

Every claim cited. Every dose disclosed.

If a human trial doesn't support an ingredient at its studied dose, we don't put our name on it. No proprietary blends hiding sub-effective amounts — you see exactly what's in every serving and why.

Read the research library
"Resistance training with adequate protein preserved lean mass during caloric restriction versus diet alone."
— RCT, Journal of Clinical Nutrition
"Creatine supplementation during energy restriction reduced loss of muscle strength and mass."
— Meta-analysis, Sports Medicine
"EPA+DHA supplementation improved cardiometabolic markers during significant weight loss."
— RCT, American Journal of Clinical Nutrition
Why Proco

Not another "GLP-1 support" blend.

 ProcoTypical GLP-1 blend
Every dose disclosedYesProprietary blend
Dosed to the studied rangeYesOften sub-effective
Third-party COA every batchYesRarely
Backed by human trialsCitedMarketing claims
Muscle + heart + nutrientsComplete systemSingle pill
Founding release

Be one of the first.

Proco is opening to its first cohort. Join as a founding member, lock in launch pricing, and shape the product with your feedback — backed by our 60-day money-back guarantee, so there's nothing to lose.

Claim founding member offer
Customer reviews will appear here as our first members share their results.
The complete companion

Everything your body needs on a GLP-1 — in one monthly delivery.

Seven essentials in one routine — muscle protection, side-effect support and the nutrient gaps covered. The whole solution, on one simple routine.

Start the system
COMPLETE GLP-1 SYSTEM
€199
  • Whey Protein Isolate
  • Creatine Monohydrate
  • Omega-3 EPA+DHA
  • Magnesium Glycinate
  • Electrolytes
  • Vitamin D3
  • Daily Multivitamin · 60-day guarantee
Shop the Complete System
Why we built Proco
"Millions are losing weight on these medications — and up to 40% of it can be muscle. We built Proco so the loss is fat, and the evidence is real. If a human trial doesn't support it, we don't stock it."
— Johnny Meagher, Founder
Questions

Straight answers.

Do I need these if I'm on Ozempic or Mounjaro?

If you want to protect muscle and cover the nutrient gaps that come with eating far less, yes — protein and creatine are the highest-leverage additions, with omega-3 and magnesium covering heart and micronutrient needs. Always check with your clinician.

When will I notice a difference?

Some things (energy, sleep, cramps from magnesium) can shift within a couple of weeks. Muscle preservation is the long game — creatine takes 3–4 weeks to saturate, and the real benefit shows across a full cut. That's why our guarantee runs a full 60 days.

What does the 60-day guarantee cover?

If Proco isn't right for you within 60 days of your order, contact us for a full refund. No forms, no hassle — enough time to give it a fair run alongside your medication.

Are the doses actually effective?

Every ingredient is dosed to the range used in the human trials we cite — no proprietary blends, no sub-effective amounts. The exact dose is on every product.

Is it third-party tested?

Every batch is COA-tested by an independent lab, and the certificate is available.

Can I cancel the subscription?

Anytime, in a click. Pause, skip or cancel from your account.