Supplements on a GLP-1: The Honest Shortlist
The short answer
Here’s the honest version: most supplements sold to people on a GLP-1 are marketing, not muscle insurance. The short list actually worth considering is small — creatine, but only alongside resistance training; electrolytes if you’re losing fluids from eating and drinking less; and a basic vitamin top-up if your appetite is way down. Food and training do the real work; supplements are the last five percent. Anything about your personal dose, safety, or medications belongs with your healthcare provider.
Walk down the supplement aisle — or scroll your feed — and everything promises to protect your muscle and melt your fat while you’re on a GLP-1. Almost none of it earns the claim. This is the skeptic’s shortlist: what the evidence actually supports, what to skip, and why food and training matter far more than anything in a tub.
Start with the 95 percent: food and training
Before any powder or pill, two things decide how much muscle you hold onto while you lose weight: eating enough protein and doing resistance training a couple of times a week. That’s not the exciting answer, but it’s the true one — supplements sit on top of that foundation, and they do nothing useful without it.
So the honest order is food first, training first, supplements last. If you’re not yet hitting your protein or lifting regularly, that’s where your effort pays off — start with protein on a GLP-1 and strength training on a GLP-1, and treat everything below as optional.
The short list worth considering
Three things clear the bar of decent evidence and a real reason to bother on a GLP-1. Creatine, taken alongside resistance training, is the most-studied option for people working to gain lean mass and strength — but the training is the lever, not the powder. Electrolytes make sense if the GI side of a GLP-1 has you losing fluids. And a basic vitamin top-up is reasonable if you’re eating much less than you used to.
Notice what each of these is: a top-up for a real gap, not a shortcut. None of them replaces the protein and the lifting. Each has its own guide below — creatine on a GLP-1, electrolytes on a GLP-1, and vitamins to consider when your appetite is low.
Why the GI side matters here
A GLP-1 changes how much you eat and drink, and for many people it comes with nausea, vomiting, or diarrhea — which can mean losing fluids and electrolytes. That’s the honest reason electrolytes show up on the list: you’re replacing what you lose, not buying energy.
It’s also why eating much less can leave gaps in the vitamins and minerals you used to get from food. The fix isn’t a cabinet full of pills — it’s checking what’s actually low. More on both in the electrolytes and vitamins guides.
What to skip — and when to ask a person, not a label
Most of the rest is noise: fat-burners, BCAAs, collagen sold for muscle, and ‘GLP-1 support’ blends that lean on hope more than evidence. The supplements-to-skip guide walks through them one by one so you can keep your money.
And one rule runs through every page here: anything personal — how much to take, whether it’s safe with your medications or kidneys, or managing a side effect — is a question for your healthcare provider, not a supplement label. Supplements interact with medications and conditions, so that’s not a formality.
Every page here lands in the same place: supplements are the last five percent, and the training is the ninety-five. Mira coaches that training — short, form-scored strength sessions through your phone — which is the part that makes a supplement like creatine worth taking at all.
Build my planCommon questions
Do I need supplements on a GLP-1?+
Mostly no. The two things that actually help you hold onto muscle while you lose weight are enough protein and resistance training — supplements are the last five percent on top of that. The short list worth considering is creatine (only with training), electrolytes if you’re losing fluids, and a basic vitamin top-up if you’re eating much less. Anything about your personal situation belongs with your healthcare provider.
What supplements are actually worth taking on a GLP-1?+
A small list: creatine alongside resistance training, which is the most-studied option for people working to gain lean mass and strength; electrolytes if the GI side of the medication has you losing fluids; and a basic multivitamin if your appetite is way down and you’re eating much less. Everything else — fat-burners, BCAAs, collagen for muscle, ‘GLP-1 support’ blends — you can generally skip.
Can a supplement stop me losing muscle on a GLP-1?+
No supplement does that on its own. What helps you hold onto muscle is the combination of enough protein and resistance training; creatine may add a little to the results of that training, but it does next to nothing without it. Think top-up, not shortcut — and take any personal dose or safety question to your healthcare provider.
Keep reading
Creatine on a GLP-1
The honest read on creatine on a GLP-1: with resistance training it supports lean mass and strength, but little on its own. Dose is a provider question.
Electrolytes on a GLP-1
Why cramps, dizziness, or fatigue can show up on a GLP-1, and how to replace the fluids and electrolytes you lose — plus when it’s a provider issue.
Vitamins to Consider When Your Appetite Is Low on a GLP-1
Eating much less on a GLP-1 can leave gaps in vitamins like B12 and D. The reliable move is to test, not guess — your provider can check your levels.
Supplements to Skip on a GLP-1 (Fat-Burners Included)
Do fat-burners work on a GLP-1? The skeptic’s anti-list — fat-burners, BCAAs, collagen for muscle, and ‘GLP-1 support’ blends you can save your money on.
How to Take Creatine on a GLP-1
How to take creatine on a GLP-1: pick monohydrate, mix it so a small appetite tolerates it, and pair it with training. Your dose is a provider call.
How Much Protein Do You Need on a GLP-1?
How much protein you need on a GLP-1, in real grams — a per-day and per-meal target to help hold onto muscle while you lose weight, plus how to hit it.
Strength training on a GLP-1
A beginner’s guide to strength training while losing weight on a GLP-1 — how to hold onto muscle, at home, in 15 minutes a day.