SERIOUS ABOUT WEIGHT LOSS?

Serious about weight loss? So are we.

Getting on a GLP-1 is the easy part. Staying on it — and keeping the weight off — is where most people fail: around half quit within the first year, and when they stop, the weight comes back. Most providers hand you the medication and disappear. Proco is the program that actually gets you there — relief for the side-effect days, protection for your muscle and health, and real guidance at every stage. Medication and clinical care through licensed partners; the support that makes it last, from us.

Today: the support stacks. Next: the full program.

A person reflecting on their health choices in natural light
THE PART NOBODY SUPPORTS YOU THROUGH

Most people quit within a year. We’re how you don’t.

The drugs work — but staying on them is hard. Around half of people stop within the first year, and up to three in four within two, usually because of the side effects, the muscle loss, and being left to figure it out alone. Stop, and most of the weight comes back within a year. The fix isn’t willpower — it’s support. Proco gives you the side-effect relief, the muscle and nutrition protection, and the stage-by-stage guidance that keep you going, so you stay the course and keep what you worked for.

40% of weight lost can be muscle on a GLP-1
80+ human clinical trials reviewed per formula
4 evidence-dosed essentials in the core stack
0 proprietary blends or hidden fillers

The scale drops. So does a lot you didn't bargain for.

Rapid weight loss on very little food hits harder than the number on the scale:

Proco is built to help stop precisely this — not a fat-burner, not a trend, the specific evidence-dosed essentials your body is missing.

Find the stack for your stage.

Whichever stage you're at, there's a stack built for it.

Before your first dose

Pre-Start Kit

Set up before your first dose.

What’s insideWhey Protein, Magnesium, Vitamin D3 + free Pre-Start Guide

€79
Shop Pre-Start →

For the side effects

Side-Effect Relief

For the nausea, constipation and crash.

What’s insideFiber, Electrolytes, Magnesium, Ginger + B6

€74
Coming soon

Coming off or maintaining

Keep-It-Off Stack

Hold the muscle. Keep the results.

What’s insideWhey, Creatine, Vitamin D3

€84
Shop Keep-It-Off →

Everything, in one

Complete GLP-1 System

The whole solution, in one.

What’s insideAll nine essentials

€199
Coming soon
Human trials only
Transparently dosed
COA-tested every batch

Lose the fat. Keep the muscle.

On Ozempic, Wegovy, Mounjaro or another weight-loss medication, the scale can drop fast — but up to 40% of what you lose can be muscle, and your nutrition falls with your appetite. Proco gives you the evidence-dosed essentials to protect your muscle, heart and metabolism while you lose, so you come out stronger, not just smaller. Every ingredient is backed by human clinical trials. If the evidence is not there, we do not stock it.

What we focus on — and why.

Protect your heart

Omega-3 and magnesium — each shown in human trials to support healthy cholesterol, blood sugar and blood pressure while you lose weight.

Protect your muscle

Rapid weight loss strips lean muscle. Protein and creatine, backed by human trials, help you hold onto the muscle that keeps you strong and your metabolism healthy while you lose.

We start with supplements — and build the support around you.

Losing weight well is about more than what is in the bottle. Alongside the stack you get plain, cited guidance on protecting your muscle, heart and metabolism, the right routine for where you are, and a brand built to support you through the whole journey — not just sell you a tub. Proco is an evidence-first obesity & cardiometabolic health company: supplements are where we start.

On a GLP-1 or weight-loss medication? Come out of it stronger.

GLP-1s and the new generation of weight-loss medications are a powerful tool, and the right supplements help you get the very best from them. Research shows up to 40% of weight lost on these medications can be muscle — so Proco's GLP-1 Support Stack is built to protect it. Four evidence-backed essentials in one: protein and creatine to defend and rebuild lean muscle, omega-3 for heart health, and magnesium to cover the nutrient gaps that come with eating less — all among the most researched compounds in human science. All backed by human trials.

Explore GLP-1 Support →

The evidence is the product.

Every formula starts with peer-reviewed human trials — the gold standard. Exact ingredients, exact doses, transparently stated. No proprietary blends, no fillers. Every batch independently tested with a Certificate of Analysis, and every product page cites the studies behind it. You get to see exactly what you're taking, and exactly why.

Start right — from your very first dose.

The people who keep their muscle (and keep the results) are the ones who set up before the appetite drops: protein dialled in, the right essentials on hand, and a simple plan for the weeks ahead. Walk in ready instead of playing catch-up. Get the free Pre-Start Guide — what to have in place before dose one, the mistakes that cost people their muscle, and the questions to ask your clinician.

You're on the list. We'll be in touch.

Educational only — whether a weight-loss medication is right for you is a decision for you and your clinician.

Frequently asked

Do I need supplements while on a weight-loss medication?

On Ozempic, Wegovy or Mounjaro you eat far less, so protein and key nutrients fall short and rapid weight loss draws from lean muscle as well as fat — research shows it can be up to 40% of the weight lost. The stack helps you protect muscle, heart and metabolic health while you lose.

What's in the GLP-1 Support Stack?

Whey protein, creatine, omega-3 (EPA+DHA) and magnesium — four evidence-backed essentials, €99 (save €22 vs buying separately).

How do I take it?

A simple daily routine — a protein serving and creatine daily, omega-3 with a meal, and magnesium in the evening.

Are Proco supplements safe?

Every product is dosed to published human-trial ranges, made in GMP/HACCP-certified facilities and batch-tested with a Certificate of Analysis. If you take medication or are pregnant, check with your clinician.

Where do you ship?

We ship across the EU and the US, with free shipping over €65.

I'm only thinking about starting — is this for me?

Yes — the best time to set up is before your first dose. Grab the free Pre-Start Guide above, and have the stack ready for when appetite drops.

Build my stack →
From the blog Browse research & articles →