Best GLP-1 Supplements: Ranked by Evidence and Cost Per Serving

No supplement replicates or replaces a GLP-1 medication. That is the short answer, and any product implying otherwise is a red flag. What supplements can do is fill the gaps a GLP-1 medication can create: protein when appetite drops, fiber for regularity, fluids and electrolytes when intake falls, and targeted nutrients when calories run very low. This page ranks the supplement types by evidence strength and fit for those gaps, then shows current price per serving in the tracker tables below.

Here is how the ranking was built, what the evidence says for each type, and where it stops.

How we ranked these

The order, in one line: protein, fiber, electrolytes, targeted nutrients, creatine, ginger. Two things decided it:

• Strength of human evidence. Types backed by meta-analyses or controlled trials in people rank above types with only lab data or tiny exploratory studies.
• Fit for a common GLP-1 problem. Reduced appetite, constipation, and falling fluid and calorie intake are the gaps that come up most. Types that address those directly rank higher.

Strong evidence for a narrow purpose can rank below moderate evidence for a common one. This is a ranking of supplement types, not brands. Brand, popularity, and commission did not matter, and prices appear only in the tracker tables below.

One limit applies to everything here: none of the supplement types ranked on this page has been tested in people taking GLP-1 medications. The human evidence comes from other groups. Each section says what its evidence does and does not cover.

This is a buying guide, not the evidence review. For the ingredient-by-ingredient breakdown, see Do GLP-1 supplements work?.

1. Protein powder or shakes: for hitting a target when appetite is low

Appetite drops on a GLP-1 medication, and protein intake often drops with it. Across GLP-1 trials, lean mass made up roughly 15% of the weight lost in some studies and 40 to 60% in others (Neeland et al. 2024). The loss looks roughly in line with what age, health, and the amount of weight lost would predict, and the review does not show that it is harmful (Neeland et al. 2024).

• What the evidence supports. One recent review suggests at least 1.2 g of protein per kg of body weight daily, up to 1.6 g/kg for adults without chronic kidney disease. That is based on ideal or adjusted body weight, spread across meals at about 0.3 to 0.4 g/kg each (Arslan 2026). The target gets harder to hit when appetite shrinks.
• The limit. The case for a powder is hitting a daily target, not a hormone effect. A high-protein test meal raised GLP-1 and PYY more than high-carb or high-fat meals, but the hormone rise did not reliably reduce hunger or food intake (van der Klaauw et al. 2013). Food comes first. A powder fills a gap on low-appetite days. It does not replace meals.
• What to check on the label. Grams of protein per serving and servings per container. Scoop sizes vary, and some servings are two scoops.

Current prices per serving

Current lowest prices per serving from our tracked catalog:

The full list, with filters by type and brand, is on the protein category page. Our protein guide covers targets and food-first options in depth.

2. Fiber, especially psyllium: for regularity

Constipation is one of the digestive side effects people commonly report on GLP-1 medications. In the semaglutide trials, digestive side effects clustered around dose increases and were mostly mild to moderate and temporary (Wharton et al. 2022). Fiber is the first lever for that.

• What the evidence shows. Psyllium is the best-studied fiber supplement. A meta-analysis found it improved fasting glucose and HbA1c, with the largest effects in people whose glucose control was most impaired at the start and the smallest in people with normal glucose (Gibb et al. 2015).
• The practical case. Adequate daily fiber is about 25 g for women and 38 g for men, or about 14 g per 1,000 calories eaten (Daley & Shreenath). That target gets harder to hit when appetite drops. A psyllium serving is a straightforward way to close part of the gap.
• The limit. That meta-analysis measured glucose, not constipation, and it did not include people taking GLP-1 medications. Food comes first here too. Beans, oats, fruit, and vegetables do this job, and a supplement covers the days the diet does not.
• A timing caution. Fiber can interfere with levothyroxine absorption, though the evidence is limited to one case series and one small crossover study (Wiesner et al. 2021). If you take thyroid medication, ask your prescriber how to space the two.
• What to check on the label. Grams of soluble fiber per serving, ideally from psyllium, and servings per container. Follow the label on how much water to take with it.

Current prices per serving

Current lowest prices per serving from our tracked catalog:

The full list, with filters by type and brand, is on the fiber category page. Our fiber and regularity guide covers dosing and food sources.

3. Electrolytes and fluids: for hydration when intake drops

Eating and drinking less lowers fluid intake, and some of the water people used to get from food disappears with it. General reference targets for total water are about 2.7 liters a day for women and 3.7 liters for men, counting water from food as well as drinks. About 80% of that typically comes from beverages (National Academies).

• What the evidence shows. The specific evidence is thin. There is no trial of electrolyte supplements in people taking GLP-1 medications, and the reference targets above are general population numbers.
• Why it still ranks. This is a supply problem with a straightforward fix. Sodium, potassium, and fluid are what an electrolyte mix actually provides.
• What to check on the label. Sodium and potassium per serving, and how many servings the container holds. Check the directions too. Some mixes are meant to be sipped across the day rather than drunk at once.

Current prices per serving

Current lowest prices per serving from our tracked catalog:

The full list is on the electrolyte category page. Our electrolytes and hydration guide covers targets and signs to watch for.

4. Targeted nutrients or a multivitamin: only when calories fall very low

This rank applies to some people, not all. A 2025 joint advisory from four obesity and nutrition societies notes that GLP-1 medications cut calorie intake by roughly 16 to 39%. It flags a risk of falling short on vitamins and minerals, especially below about 1,200 calories a day for women and 1,800 for men (Mozaffarian et al. 2025).

• What the advisory says. Supplements can be considered for at-risk nutrients such as vitamin D, calcium, and vitamin B12, tailored to each person (Mozaffarian et al. 2025). It names nutrients, not a multivitamin.
• The limit. Food comes first here more than anywhere else on this page. The better-supported approach is working out which nutrients you actually fall short on, rather than adding everything at once.
• What to check on the label. Which nutrients are included and how much of each per serving. Compare that against what you already eat, and ask your prescriber before adding anything.

Our multivitamin guide covers this in detail, and the multivitamin category page lists tracked products.

5. Creatine: for strength, only alongside training

Protein and strength training come first. Creatine is a possible add-on to that pair, not a stand-in for either.

• What the evidence shows. A meta-analysis of 22 trials in adults with average ages of 57 to 70 found about 1.4 kg more lean tissue with creatine plus resistance training than with training alone (Chilibeck et al. 2017). Every trial in that analysis paired creatine with training. The evidence does not say creatine builds muscle on its own.
• The limit. No completed study has tested creatine in people taking GLP-1 medications. The first small trial, with 40 participants, is still recruiting (NCT07625202).
• What to check on the label. Grams of creatine monohydrate per serving. Blends may include other ingredients, so check the monohydrate dose specifically.

Our creatine guide covers dosing and safety, and the creatine category page lists tracked products.

6. Ginger: for mild nausea, tested in a different setting

In the semaglutide 2.4 mg trials, nausea was reported by about 44% of participants against 16% on placebo. Digestive side effects clustered around dose increases and were mostly mild to moderate and temporary (Wharton et al. 2022). Ginger is the most common first try for it in GLP-1 communities.

• What the evidence shows. A meta-analysis of five trials in 363 surgical patients found that at least 1 g of ginger reduced the risk of nausea and vomiting after surgery compared with placebo (Chaiyakunapruk et al. 2006).
• The limit. That evidence comes from post-surgical nausea. Ginger has not been tested for nausea on GLP-1 medications. The evidence behind it is modest but real, and it comes from a different kind of nausea.
• What to check on the label. Grams of ginger per serving. Teas, chews, and capsules vary widely, so check what one serving actually contains.

Our nausea guide covers the wider options, and the nausea category page lists tracked products.

Products sold as GLP-1 boosters

A separate shelf of products is sold as GLP-1 boosters or natural GLP-1 support, premised on the idea that certain compounds raise the body's own GLP-1. Even where a compound does that, the hormone the body makes is broken down within about two minutes by the enzyme DPP-4. Prescription GLP-1 medications are engineered to resist that breakdown and stay active far longer (Lee & Lee 2017). A short-lived rise from a capsule is not the medication, and no supplement replicates or replaces it.

• Berberine. Pooling 37 trials in 3,048 people with type 2 diabetes, berberine lowered HbA1c by about 0.6 percentage points and fasting glucose by about 0.8 mmol/L, without a significant rise in total adverse events (Xie et al. 2022). Most of those studies were of moderate quality. That is glucose evidence in type 2 diabetes, not evidence of GLP-1 effects. It is not a reason to change anything your prescriber has you taking, and if you take other diabetes medication, ask your prescriber before trying berberine.
• Probiotics such as Akkermansia. The main human study was exploratory: three months, 32 completers, with reported improvements in insulin sensitivity. The authors themselves said the sample was too small for firm conclusions (Depommier et al. 2019). Emerging is the honest word. Proven is not.
• Chromium. The NIH Office of Dietary Supplements describes the evidence for chromium supplements in glucose control as limited and inconsistent. Chromium deficiency has not been reported in healthy people (NIH Office of Dietary Supplements).

The plain verdict: none of these is a substitute for a GLP-1 medication, and none is the first thing to buy. If one of the gaps in the ranks above applies to you, start there.

Current prices per serving

Current prices per serving for the products our tracker files under GLP-1 support. A listing here is not a recommendation:

The full list is on the GLP-1 support category page.

What to check on any label

• Grams of the active ingredient per serving. The studied doses are gram-level for protein, fiber, creatine, and ginger. A blend name on the front tells you nothing about the dose inside.
• Servings per container. A 90-count bottle can be 30 servings if one serving is three capsules. Price per serving only means something once servings are counted.
• A third-party seal. Seals from USP, NSF, or ConsumerLab mean a product contains what the label says without harmful contaminants. They do not show whether it works (NIH ODS 2023).
• No drug names used as claims. A supplement that borrows a prescription drug name for its label or its marketing is making a claim the evidence does not support.

When to talk to your prescriber

Ask your prescriber before starting anything new. A few situations make that conversation more than a formality:

• Kidney disease. The upper protein figure above, 1.6 g per kg, is for adults without chronic kidney disease (Arslan 2026). If your kidney function is reduced, ask what your target should be.
• Thyroid medication. Fiber can interfere with levothyroxine absorption (Wiesner et al. 2021), so ask about timing before adding a fiber supplement.
• Diabetes medication. Berberine lowers glucose (Xie et al. 2022). Adding it on top of existing diabetes medication is a prescriber conversation first.
• Nausea that does not pass. If nausea is severe, keeps coming back, or stops you keeping fluids down, call your prescriber. That conversation outranks any product on this page.
• Very low intake. If calorie intake stays below about 1,200 a day for women or 1,800 for men, the advisory flags a risk of falling short on vitamins and minerals (Mozaffarian et al. 2025). Ask which nutrients are worth checking.

This page is general information, not medical advice. Your prescriber knows your situation. We do not.

Related reading

• Do GLP-1 supplements work?: the ingredient-by-ingredient evidence review behind this page.
• Protein on a GLP-1: targets, food-first options, and how to compare powders.
• Fiber and regularity on a GLP-1: psyllium dosing, timing, and food sources.
• Electrolytes and hydration on a GLP-1: fluids, sodium, and potassium when intake drops.
• Multivitamins on a GLP-1: which nutrients come up, and when a multivitamin makes sense.
• Creatine on a GLP-1: dosing, safety, and the blood test to know about.
• Managing nausea on a GLP-1: what helps, and when to call the prescriber.
• GLP-1 side effect support kit: a checklist approach to the common side effects.