Uploaded August 2026 | Updated September 2026, 1 day ago
Protein powder bloating is real — but it may not be the protein itself.
In this video I break down the two most common culprits: the sugar alcohols hiding in your sweetener blend, and the lactose difference between whey concentrate and whey isolate.
The sweeteners to look for on your label are sorbitol, mannitol, xylitol and maltitol. Your gut can't fully absorb them, so it ferments them instead — which pulls in water and produces gas. There's one sugar alcohol that's the exception, and I explain why in the video.
The one that catches most people out has nothing to do with additives though. It's the protein itself — and you don't need to be full-blown lactose intolerant for it to hit you.
To be clear, I'm not saying protein powder is bad. I use one myself. But if you're getting through three, four, five scoops a day and can't shift a bloated stomach even while cutting, it's worth checking what's actually in the tub.
In this video:
• The four sweeteners to look for on your label
• Why they cause gas and bloating
• The one sugar alcohol that's usually fine
• Whey concentrate vs whey isolate, and why it matters
• Two simple changes to fix it
Chapters:
00:00 Why your shake is bloating you
00:39 Sugar alcohols: the four to look for
01:08 The one exception
01:30 The real culprit: concentrate vs isolate
02:09 Two things to fix it
02:44 Watch next
Watch next: Does Beetroot Juice Really Work? I Tested It For 3 Weeks → youtu.be/GFq12dnGnp0
Everyone's tolerance is different, and bloating can have many causes. If symptoms are persistent, severe, or painful, speak with a qualified healthcare professional.
Honest, no-BS supplement & fitness testing. I try everything myself before telling you if it's worth your money.
I'm Stuart Patrick, founder of ListedFit. My promise is simple: honest reviews you can trust. I buy, test, and break down supplements, protein, creatine, running shoes, earbuds & fitness gear with real-world testing, not marketing hype.
If a video is sponsored, I'll tell you upfront and my opinion stays my own. No paid hype, no hidden deals.
Subscribe if you want the truth before you buy.
Product to test or business inquiry: stuart@listedfit.com
Instagram: instagram.com/listedfit | TikTok: tiktok.com/@listedfit
Disclaimer: I'm Stuart Patrick. I test everything I review, but these videos reflect my personal experience and opinion, not medical advice — results vary. Some links may be affiliate links. Talk to a healthcare professional before changing your diet or supplements.
Protein powder bloating is real — but it may not be the protein itself.
In this video I break down the two most common culprits: the sugar alcohols hiding in your sweetener blend, and the lactose difference between whey concentrate and whey isolate.
The sweeteners to look for on your label are sorbitol, mannitol, xylitol and maltitol. Your gut can't fully absorb them, so it ferments them instead — which pulls in water and produces gas. There's one sugar alcohol that's the exception, and I explain why in the video.
The one that catches most people out has nothing to do with additives though. It's the protein itself — and you don't need to be full-blown lactose intolerant for it to hit you.
To be clear, I'm not saying protein powder is bad. I use one myself. But if you're getting through three, four, five scoops a day and can't shift a bloated stomach even while cutting, it's worth checking what's actually in the tub.
In this video:
• The four sweeteners to look for on your label
• Why they cause gas and bloating
• The one sugar alcohol that's usually fine
• Whey concentrate vs whey isolate, and why it matters
• Two simple changes to fix it
Chapters:
00:00 Why your shake is bloating you
00:39 Sugar alcohols: the four to look for
01:08 The one exception
01:30 The real culprit: concentrate vs isolate
02:09 Two things to fix it
02:44 Watch next
Watch next: Does Beetroot Juice Really Work? I Tested It For 3 Weeks → youtu.be/GFq12dnGnp0
Everyone's tolerance is different, and bloating can have many causes. If symptoms are persistent, severe, or painful, speak with a qualified healthcare professional.
Honest, no-BS supplement & fitness testing. I try everything myself before telling you if it's worth your money.
I'm Stuart Patrick, founder of ListedFit. My promise is simple: honest reviews you can trust. I buy, test, and break down supplements, protein, creatine, running shoes, earbuds & fitness gear with real-world testing, not marketing hype.
If a video is sponsored, I'll tell you upfront and my opinion stays my own. No paid hype, no hidden deals.
Subscribe if you want the truth before you buy.
Product to test or business inquiry: stuart@listedfit.com
Instagram: instagram.com/listedfit | TikTok: tiktok.com/@listedfit
Disclaimer: I'm Stuart Patrick. I test everything I review, but these videos reflect my personal experience and opinion, not medical advice — results vary. Some links may be affiliate links. Talk to a healthcare professional before changing your diet or supplements.
