The medication is only half the equation. Proco's muscle-first stacks protect your muscle, heart and energy while you lose — real support to stay on track, not just a product.
Not sure which stack is right for you?
A few quick questions about where you are on your GLP-1 — we'll match you to the right stack.
Take the assessment →What nobody warns you about
Rapid weight loss on very little food hits harder than the number on the scale:
Proco gives you the evidence-dosed essentials to protect against exactly this.
Find your stack
Every stack we've built — pick the one for where you are right now. Still not sure? Take the 60-second assessment →
While you lose
GLP-1 Support Stack
Lose fat, not muscle.
What’s insideWhey, Creatine, Omega-3, Magnesium
The upgrade
Complete GLP-1 System
The whole solution, in one.
What’s insideAll nine essentials
Before your first dose
Pre-Start Kit
Set up before your first dose.
What’s insideWhey Protein, Magnesium, Vitamin D3 + free Pre-Start Guide
For the side effects
Side-Effect Relief
For the nausea, constipation and crash.
What’s insideFiber, Electrolytes, Magnesium, Ginger + B6
Coming off or maintaining
Keep-It-Off Stack
Hold the muscle. Keep the results.
What’s insideWhey, Creatine, Vitamin D3
What we're here for
Up to 40% of the weight you lose on a GLP-1 can be muscle. Proco’s evidence-dosed essentials protect your muscle, heart and metabolism while you lose — every ingredient backed by human trials.
Why Proco
Omega-3 and magnesium — each shown in human trials to support healthy cholesterol, blood sugar and blood pressure while you lose weight.
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.
GLP-1 Support
Up to 40% of weight lost on a GLP-1 can be muscle. The GLP-1 Support Stack protects it — protein, creatine, omega-3 and magnesium, four essentials backed by human trials. See the research →
Explore GLP-1 Support →Thinking about Ozempic, Wegovy or Mounjaro?
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.
Educational only — whether a weight-loss medication is right for you is a decision for you and your clinician.
Common questions
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, $117 (save $25 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 US and the EU, with free shipping over $75.
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.
"Finally a supplement brand that shows the actual studies. I know exactly what I'm taking and why — no guesswork."
"Switched from three separate bottles to one stack. Simpler routine, and every dose is on the label — nothing hidden."
"No mystery blends, no guessing. The Certificate of Analysis on every batch is what actually sold me."
"Started the GLP-1 Support Stack before my first dose, like they recommend. Wish every brand was this upfront."
"Support actually answers questions about the research behind the formulas, not just canned responses."
"Easy to build a stack around my GLP-1 prescription, and shipping was fast and discreet."