SIBO…did it ever go away?

Posted by Kendra @kendra75, May 13, 2025

Hi everyone. Very long story short I recently came back from the Mayo pain rehabilitation program for chronic pain from IBS for the last few years. My question is: while going to many doctors for a diagnosis I did test positive for SIBO. The doctor didn’t think it was the cause of my symptoms however we wanted to treat it of course. I did two rounds of the antibiotic that they often give for SIBO. I was never retested and I never felt any different after the antibiotic. Is it possible that it never went away and could be contributing to my IBS symptoms? Thanks so much for your help! I know you’re not all doctors but would love opinions. Thanks.

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Profile picture for hallward @hallward

Your story is all too familiar. We are pretty much left to figuring this
out on our own. I also have figured out a way to manage SIBO. It’s not
great and there are many limitations but it seems to be the best option for
the moment.
Good luck to you.

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@hallward - when you mention you've figured out a way to manage SIBO, are you referring to dietary changes you have made?

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Profile picture for Lisa Lucier, Moderator @lisalucier

@hallward - when you mention you've figured out a way to manage SIBO, are you referring to dietary changes you have made?

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@lisalucier
Yes, I follow the low FODMAP diet, not 100% but enough that it keeps things under control. I’ve learned a few foods that really bother me like garlic and onion and dairy and avoid them.

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Profile picture for h8bigbiz @h8bigbiz

@weathergirl15

The only thing that slightly works to manage my condition with SIBO is to not swallow anything (even my own saliva).

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@h8bigbiz

Ha, ha, ha............ I get it...........

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So for sure, no medical expertise here, but I think it's quite possible your SIBO never went away. Have you tried the low Fodmap diet? That's what helps me the most.

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Profile picture for rnewman12 @rnewman12

@hallward I agree with you that the medical world at this point doesn't have much to offer to those of us who suffer from SIBO, its related conditions, and side-effects. Given all that they still don't understand and our very individual physiognomies and genetic make-up, I feel that all we can do is tinker and try things. In the end, we may never be cured and may just have to settle for having something that we can live with as best we can.

I have been messed up since summer 2024. A case of food poisoning in May was probably the culprit. I had a colonoscopy and an endoscopy. The endoscopy revealed that my brush membrane was damaged and that I had developed ASID (Acquired Sucrase Isomaltase Enzymatic deficiency. That is, my body can no longer properly digest these forms of sugar). My symptoms at this point were constipation and also dyssynergic defecation. My stools veered from loose to hard and were often orange in color. I also felt generally unwell and blood tests indicated very low iron (though not quite anemia). This, I believe, caused me to start having multiple tormenting instances of a form of restless leg syndrome centered in my lower spine. I had a special MRI and it indicated pelvic dysfunction. Because of all the bowel stuff I also developed very bad hemorrhoids. In December 2025 I took the breath test and was finally diagnosed with methane type SIBO, which confirmed what I already pretty much knew.

To cut to the chase, where am I now, a year and a half later? I'm on a special restrictive diet guided by ASID diet guidelines (available online). It has some similarities with FODMAP but is different. Basically, I avoid sugar of ALL types, including almost all fruit (except berries, kiwis, and prunes). It's annoying but can be done, though it would be impossible, I think, for vegetarians. I've gotten rid of all supplements and even, when possible, medications that might cause constipation. I did pelvic floor physical therapy and it gave me some useful insights. I elevate my feet on a stool when defecating. I try, as much as possible, to ONLY poop once every morning after coffee and breakfast. I take miralax and a senna laxative daily and try to drink a lot of water. I eat a few olives and a little plain, sugar-free Greek yoghurt for probiotics every day. If I haven't pooped at all for 2 days straight I up the dose of the laxative but it's good for the hemorrhoids to have a break for a couple of days anyway. I just did a 2-week course of Rifaximin (Xifaxan) and we'll see what the long-term results are, if any. Already I have less gas, less dyssyneric defecation, and my poops have become brown again.

But you'll need to tinker to figure out what works for you. I lost 20 lbs from not eating sugar. (The only plus from all this!) I'm at the point where I can live more or less normally but if I have an early appointment somewhere I get up 3 hours earlier to ensure I'll be in condition to leave the house. And because of the hemorrhoids I need to wear a sanitary pad at least a few times every week. And, yes, people think I'm crazy because of the restrictive diet. But this might be as good as it gets.

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@rnewman12
Very familiar story. I feel like sibo is a chronic condition more than not. I had a small bowel resection a few years ago and have been dealing with this ever since. My initial diagnosis was methane+ hydrogen. I worked with a nutritionist for over a year. The methane was eliminated with Alimax (garlic) therapy. I took one round of rifaximin for hydrogen, but I don't think it completely eliminated the hydrogen. My doc had me do the biofeedback and pelvic floor stuff which has helped. My biggest issue aside from bloating is almost constant gas. I was thinking of trying simethicone (gasx) for this. Has anyone had any luck taking this? My wife is after me to go back to the gastroenterologist, but I think its a waste of time.

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Profile picture for ttheo @ttheo

@rnewman12
Very familiar story. I feel like sibo is a chronic condition more than not. I had a small bowel resection a few years ago and have been dealing with this ever since. My initial diagnosis was methane+ hydrogen. I worked with a nutritionist for over a year. The methane was eliminated with Alimax (garlic) therapy. I took one round of rifaximin for hydrogen, but I don't think it completely eliminated the hydrogen. My doc had me do the biofeedback and pelvic floor stuff which has helped. My biggest issue aside from bloating is almost constant gas. I was thinking of trying simethicone (gasx) for this. Has anyone had any luck taking this? My wife is after me to go back to the gastroenterologist, but I think its a waste of time.

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@ttheo
Interesting -- I had assumed that garlic was a no-no for me but I will do some reading about Alimax therapy. (I have methane type SIBO.) I tried a round of Rifaximin but it doesn't seem to have done much good. And it's not a permanent fix, from what I hear, because often the bacteria comes back as soon as the drug is discontinued. Plus I was worried about the long-term damage the drug might do to whatever remains of my "good" microbiome.

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I'm the same way with garlic. The way they extract or refine Allimax is not like eating regular garlic. You can get a hint of garlic smell when you first open the bottle, but that's about it. My understanding is rifaximin won't help with methane since what causes methane is technically not a bacteria, but by an organism called archaea. That's why they usually prescribe neomycin along with rifaxamin when you have methane.

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Profile picture for ttheo @ttheo

@rnewman12
Very familiar story. I feel like sibo is a chronic condition more than not. I had a small bowel resection a few years ago and have been dealing with this ever since. My initial diagnosis was methane+ hydrogen. I worked with a nutritionist for over a year. The methane was eliminated with Alimax (garlic) therapy. I took one round of rifaximin for hydrogen, but I don't think it completely eliminated the hydrogen. My doc had me do the biofeedback and pelvic floor stuff which has helped. My biggest issue aside from bloating is almost constant gas. I was thinking of trying simethicone (gasx) for this. Has anyone had any luck taking this? My wife is after me to go back to the gastroenterologist, but I think its a waste of time.

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@ttheo

The simethicone didn't do a thing to help me but maybe you'll have more luck than I.

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I was able to get over my SIBO hump with the help of a nutritionist, Gourmend spices and broths that contain no onion or garlic bulb remnants. Yes it’s taken about a year and I’m doing OK. I still use a digestive aid before meals and I use Fodzyme powder on some foods and when I go out to eat to protect myself.

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Profile picture for jenatsky @jenatsky

I was able to get over my SIBO hump with the help of a nutritionist, Gourmend spices and broths that contain no onion or garlic bulb remnants. Yes it’s taken about a year and I’m doing OK. I still use a digestive aid before meals and I use Fodzyme powder on some foods and when I go out to eat to protect myself.

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@jenatsky
I am interested in trying the Fodzyme powder but my insurance won't pay for a nutritionist so I've never been able to determine if it's safe and/or effective. Did your nutritionist recommend it? I gather it's worked well for you.
I also have SIBO that I mostly manage via the low Fodmap diet, but eating out is a challenge since garlic is usually in everything and that is the one thing that bothers me the most.
If you don't mind, could you comment on the digestive aid you use before meals?
It's so frustrating that we are pretty much on our own when it comes to SIBO.

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