A label-data ranking built around effective protein, tolerability, verification, transparency, and value.
Why protein powder matters for GLP-1 users
Clinical guidance for people losing weight on a GLP-1 recommends 1.2–1.6 g of protein per kilogram of body weight per day, specifically to help preserve muscle during active weight loss.
Clear or hydrolyzed whey formats are broken into smaller pieces the body absorbs with less effort, which may reduce stomach discomfort — a mechanism-level rationale, since no trial has tested whey format tolerability specifically in people on a GLP-1.
Verification: NSF Certified for Sport verified (https://www.nsfsport.com/certified-products/listing-detail.php?id=1394430, checked 2026-08-10); checked coverage: NSF Certified for Sport
Value: unverified — price, servings, or clinical-dose target unavailable for cost-per-effective-dose
Verification: NSF Certified for Sport verified (https://www.nsfsport.com/certified-products/listing-detail.php?id=1791204, checked 2026-08-10); checked coverage: NSF Certified for Sport
Value: unverified — price, servings, or clinical-dose target unavailable for cost-per-effective-dose
Verification: NSF Certified for Sport verified (https://www.nsfsport.com/certified-products/listing-detail.php?id=1507950, checked 2026-08-10); checked coverage: NSF Certified for Sport
Value: unverified — price, servings, or clinical-dose target unavailable for cost-per-effective-dose
Optimum Nutrition Gold Standard 100% Casein Chocolate Peanut Butter
95
40/40
15/15
20/25
10/10
unverified
10/20
Optimum Nutrition Gold Standard 100% Casein Chocolate Peanut Butter
95
40/40
15/15
20/25
10/10
unverified
10/20
Optimum Nutrition Gold Standard 100% Casein Cookies and Cream
95
40/40
15/15
20/25
10/10
unverified
10/20
Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla
92
40/40
15/15
20/25
10/10
unverified
7/20
Pure Power Whey Protein + Probiotics Strawberry
92
40/40
15/15
20/25
10/10
unverified
7/20
Thorne Whey Protein Isolate Chocolate Flavored
91
40/40
15/15
20/25
3/10
unverified
13/20
Thorne Whey Protein Isolate Chocolate Flavored
91
40/40
15/15
20/25
3/10
unverified
13/20
OUR METHOD
How we ranked this
We score every protein powder product the same way: how well-dosed it is against a clinical reference amount, whether the form is a good one, whether an independent lab has verified what's on the label, how clearly the label discloses every ingredient, and price per effective dose. On top of that, we add one GLP-1-specific check — for protein, that means checking whether it's a clear or hydrolyzed whey isolate (generally gentler on the stomach) and whether it avoids added sugar alcohols, which can add to GLP-1-related stomach upset. Every score is public and reproducible from the same two data sources anyone can check.
1182 products scored · Insyder Score v0.4 · last scored 2026-08-10 · how scoring works →
GOOD TO KNOW
Frequently asked questions
Best protein powder for someone on Ozempic
We score every protein powder on five weighted scoring factors (dose adequacy, form quality, third-party verification, label transparency, cost-per-effective-dose) plus a GLP-1-specific tolerability overlay — clear/hydrolyzed formats score higher, sugar alcohols score lower (they can worsen GI symptoms alongside slowed gastric emptying). See the current top picks and full scored table above. Full methodology, axis weights, and changelog: /glp-1-supplements/methodology/.
What protein powder won't make me nauseous on a GLP-1?
Our GLP-1 overlay specifically rewards clear/hydrolyzed whey formats (generally lighter on the stomach) and penalizes sugar alcohols (erythritol, sorbitol, xylitol), which can compound GLP-1's own slowed gastric emptying. This is a scoring signal, not personalized medical advice — tolerability varies by person; confirm with your prescriber. Full methodology, axis weights, and changelog: /glp-1-supplements/methodology/.