GLP-1 medications, including semaglutide (Ozempic, Wegovy, and the oral pill Rybelsus), tirzepatide (Mounjaro, Zepbound), and compounded versions, have reshaped how people approach weight loss and type 2 diabetes. They quiet appetite, slow digestion, and help people lose a meaningful amount of weight. But two consequences of how well they work open a gap that the right supplements can help fill:
- You lose muscle along with the fat. In the STEP-1 trial of semaglutide, roughly 40% of the weight people lost was lean mass (mostly muscle), not fat. Tirzepatide ran better in SURMOUNT-1 at around 25%, but either way, a real chunk of the scale's drop can be muscle.
- You eat far less, so you take in fewer nutrients. A smaller appetite means less protein and fewer vitamins and minerals reaching your body, exactly when it needs them to hold onto that muscle.
No supplement replaces the medication, a protein-forward diet, or your doctor's guidance. But a small, well-chosen stack can help you protect muscle, cover the nutrient gaps a tiny appetite leaves behind, and take the edge off nausea and constipation. Here's what the evidence actually supports, and what to skip.
First, the part that matters most (and it isn't a pill)
Before any supplement: protein plus resistance training is the foundation of keeping muscle on a GLP-1. Nothing in a bottle outperforms it. Most clinicians suggest aiming for protein at every meal. A common target is roughly 1.0 to 1.5 grams of protein per kilogram of body weight per day (about 25 to 40 g per meal), though the right number is individual, so confirm it with your provider. Pair that with some form of strength training two to three times a week, and you give your body a reason to keep the muscle instead of burning it for fuel.
When your appetite is tiny, a protein shake (whey or a plant blend) is often the single most useful "supplement" there is. The best protein powder for a GLP-1 is just one you tolerate and will actually drink, ideally with 25 to 30 g per serving, because a shake is often far easier to get down than a full meal. Everything below works around that foundation, not instead of it.
1) Protect your muscle
Creatine monohydrate
Creatine monohydrate is the most-researched sports supplement in existence, and its job on a GLP-1 is simple: paired with resistance training, it helps preserve strength and lean mass while you're in a calorie deficit. The dose is 3 to 5 g a day, every day, with no loading phase needed. It's inexpensive, well tolerated, and one of the very few supplements with strong human evidence behind muscle preservation. Drink enough water, since creatine pulls a little into the muscle.
HMB
HMB (β-hydroxy β-methylbutyrate), a metabolite of the amino acid leucine, may help blunt muscle breakdown during catabolic periods like rapid weight loss. The evidence is strongest in older adults and during aggressive dieting or bed rest. A typical dose is about 3 g/day. It's a reasonable add-on if you're older or losing weight quickly, though it sits a clear step below protein and creatine in priority.
2) Replace the nutrients a small appetite misses
When you're eating half as much food, you're often getting half the micronutrients. A few worth paying attention to:
- A basic multivitamin is cheap insurance when overall food intake drops. The best multivitamin for a GLP-1 is simply a complete one you'll actually take every day, with food.
- Vitamin B12 and vitamin D are two of the most commonly low nutrients when intake falls. Ask your provider about checking your levels rather than guessing.
- Magnesium gets depleted by GI side effects, and the glycinate form is gentle on the stomach while supporting sleep and regularity. (Skip magnesium citrate at night if your stools are already loose, since it's a mild laxative.)
- Potassium can fall with vomiting or diarrhea, but get this one from food and bloodwork first. High-dose potassium supplements can be genuinely risky and should only be used under medical supervision.
- Calcium (with vitamin D) deserves attention because the rapid weight loss on a GLP-1 can lower bone density, an effect now being called "Ozempic bone loss." Calcium, vitamin D, enough protein, and resistance training together help protect your bone density. Get it from food first where you can.
3) Take the edge off the side effects
Nausea → ginger
Ginger is one of the better-studied natural options for nausea, with the strongest evidence in pregnancy- and surgery-related nausea. Most research lands around 1,000 to 1,500 mg/day in divided doses, taken as tea, capsules, or chews. It won't override severe nausea, but it can help with the everyday queasiness of the first few weeks or a dose increase.
Constipation → soluble fiber
Slowed digestion plus less food often means constipation. A gentle soluble fiber like psyllium or inulin, with plenty of water, can help keep you regular. Start with a small dose to avoid bloating and ramp up. A daily probiotic can help too, since slowed digestion shifts the gut microbiome, and a 2025 review found that fiber and probiotics improve stool consistency in GLP-1 users. Important: take fiber and any oral medications a couple of hours apart, since fiber can blunt how well other things are absorbed.
The "GI lows" → electrolytes & fluids
The vomiting or diarrhea that can show up early costs you fluids and electrolytes (sodium, potassium, magnesium), which is a big part of why people feel wiped out and lightheaded. An electrolyte mix, or simply being deliberate about water and salt, helps. And if slowed stomach emptying brings on reflux or the infamous "sulfur burps" (often called "Ozempic burps"), smaller, lower-fat meals usually help more than any pill. See our acid reflux guide.
Fatigue → check your B12, iron, and vitamin D
"Why am I so tired on Ozempic?" is one of the most common questions on these meds, and the answer is often nutritional. Low B12, iron, and vitamin D all sap energy, and a smaller appetite plus fluid loss from GI side effects make them more likely to dip. If the tiredness drags on past the first couple of weeks, ask your provider to check those levels, and make sure you're getting enough protein, water, and electrolytes. Our energy and fatigue guide goes deeper.
What about hair loss and loose skin?
"Ozempic hair loss" is one of the most-searched GLP-1 side effects, and the cause usually isn't the drug itself. Rapid weight loss is a physical stress that can trigger telogen effluvium, a temporary, diffuse shedding that tends to show up two to four months after the weight starts coming off. A smaller appetite makes it more likely by leaving you short on the protein and minerals hair is built from.
The reassuring part: it's almost always temporary, and most people see regrowth within six to twelve months once nutrition and weight stabilize. What actually helps:
- Protein, again. Hair is mostly protein, so the same intake that protects your muscle protects your hair.
- Check your levels before stacking pills. Low iron (ferritin), zinc, and vitamin D are common drivers of shedding. Iron especially should only be supplemented if a blood test shows you're low.
- Biotin and collagen. Both are popular for hair, skin, and nails. The evidence is strongest when you're deficient, and collagen also supports skin elasticity, which is why it comes up around "Ozempic face" too.
For the full breakdown, see our hair loss supplement guide. And the single best way to limit shedding is to lose the weight a little more slowly, with enough protein along the way.
What about "Ozempic face" and loose skin? The same rapid fat loss that triggers shedding also deflates the fat pads in the cheeks and temples and can leave skin looser, especially when muscle goes along with the fat. No supplement truly tightens skin, but the same fundamentals that protect your hair help here: lose weight gradually, keep protein high, and hold onto muscle with resistance training. Collagen is popular for skin elasticity, though the evidence is modest, and significant laxity is better addressed with a dermatologist than a capsule.
What you probably DON'T need (and a couple of cautions)
- "Nature's Ozempic" and blood-sugar-lowering herbs. Berberine gets marketed as a natural GLP-1, but it isn't, and it doesn't replicate semaglutide. The same goes for bitter melon and fenugreek. If you're already on a GLP-1, stacking these for blood sugar could theoretically push you toward lows. We dug into what berberine actually does in our berberine guide. But on a GLP-1, clear it with your provider first.
- Mega-doses of fat-soluble vitamins (A, D, E, K). More isn't better; these accumulate in the body. Test, then supplement to fill an actual gap.
- Stimulant "fat burners" and metabolism boosters. Unnecessary, and a poor mix with an appetite-suppressing medication.
A simple starting stack
Run this by your prescriber first
- Protein: enough to hit ~25 to 40 g per meal (a shake counts)
- Creatine monohydrate: 3 to 5 g/day, every day
- Vitamin D + B12: if your bloodwork shows you're low
- Magnesium glycinate: ~200 to 400 mg in the evening
- Ginger: 1,000 to 1,500 mg/day, as needed for nausea
- Psyllium or inulin: for constipation, taken away from other meds
- Electrolytes: on days with GI symptoms
That's five to seven things, not twenty. The goal is to support what the medication is doing: protect your muscle, refill what a small appetite misses, and smooth the rough edges, not crowd it with a cabinet full of pills.
Want our current product picks for each of these? See our curated list:
See our GLP-1 supplement picks →
Frequently asked questions
Will supplements stop GLP-1 side effects?
No, but they may take the edge off. Ginger can ease mild nausea and soluble fiber can help with constipation, but persistent or severe side effects are a conversation for your prescriber, who may adjust your dose or timing.
How much protein should I eat on Ozempic or Wegovy?
Many clinicians aim for roughly 1.0-1.5 g of protein per kg of body weight per day (about 25-40 g per meal), but the right number depends on you, so confirm with your provider. A protein shake is an easy way to get there when your appetite is small.
Is creatine worth taking on a GLP-1?
For most people doing any resistance training, yes. At 3-5 g/day, creatine monohydrate is one of the few supplements with solid evidence for helping preserve strength and lean mass during weight loss, and it's inexpensive and well tolerated.
Can I take berberine with Ozempic?
Berberine is not a natural substitute for a GLP-1 and doesn't replicate semaglutide. Combining the two for blood-sugar control could add up in ways you don't want, so don't stack them without talking to your provider.
Does Ozempic cause hair loss, and can supplements help?
The hair loss people notice on Ozempic or Wegovy is usually telogen effluvium, a temporary shedding triggered by rapid weight loss rather than the drug itself. It tends to start two to four months in and resolves within six to twelve months. Enough protein, plus correcting any low iron, zinc, or vitamin D, gives hair what it needs to recover. Biotin and collagen are popular additions, and losing weight more gradually reduces the shedding.
Why am I so tired on Ozempic?
Fatigue on a GLP-1 is common and often nutritional. Eating less can leave you low on B12, iron, and vitamin D, which are all tied to energy, and GI side effects can drain fluids and electrolytes. Some first-few-weeks tiredness from the body adjusting is normal too. If it lingers, ask your provider to check those levels and make sure your protein, water, and electrolytes are covered.
Can Ozempic or Wegovy cause vision loss or blindness?
It's rare, but worth knowing. Since 2024, studies have linked semaglutide (Ozempic, Wegovy, Rybelsus) to a higher risk of NAION, a kind of "eye stroke" that causes sudden, usually painless and often permanent vision loss in one eye. In 2025, Europe's medicines regulator classified NAION as a "very rare" side effect, on the order of up to 1 in 10,000 users, and the science is still developing. The absolute risk is low, no supplement prevents or treats it, and this is a conversation for your doctor, not your supplement shelf. The key thing to act on: any sudden change in your vision is a medical emergency, so seek care right away and tell your prescriber.
What should I take after stopping Ozempic?
The same priorities that protected your muscle on the medication matter even more afterward: keep your protein high, keep doing resistance training, and consider continuing creatine. Holding onto lean mass keeps your metabolism up and makes the weight easier to maintain, which is the whole challenge after stopping. A basic multivitamin and adequate fiber are still worth keeping. Plan the transition with your prescriber.
The bottom line
GLP-1s do the heavy lifting; supplements just cover the gaps they leave behind. Protein and strength training protect your muscle, a few targeted vitamins and minerals replace what a smaller appetite misses, and ginger and fiber smooth out the side effects. Keep it simple, keep it evidence-based, and keep your prescriber in the loop on everything you add.