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The elemental diet for SIBO – my experience

I did the elemental diet in 2020 after years of battling SIBO. I had completed a number of courses of different antibiotics, all to no avail. When the FODMAP diet wasn’t even giving me any relief, I knew I had to go nuclear.

An important note, before we begin: I am not a doctor or a medical professional. This is purely my experience on the diet. I found it really helpful reading about other people’s experiences before I started the diet, so I wanted to provide the whole picture of how it went for me. This is not intended to diagnose or cure or suggest. Please contact a specialist if you think you have SIBO or gastroparesis.

George Eats and Magnolias in Carlton, Melbourne

The elemental diet

The elemental diet is a form of liquid nutrition that replaces all food for 1-3 weeks. Because SIBO feeds on the food that passes through the intestines, the elemental diet starves the bacteria of any nutrition. With enough time spent on the diet, the bacteria die off.

The elemental diet is often considered the last resort treatment. This is because it is exceptionally tough to drink only liquid nutrition for 1-3 weeks. It is, however, very good at treating SIBO, provided it can be adhered to.

The diet needs to be prescribed by a doctor, and comes in various brands and flavours. The doctor will determine how much you need to buy based on your weight and how many calories you’ll need per day. I was prescribed Elementall Chocolate flavour. These days, they also have a pink lemonade flavour and it would have been incredible to have two flavours to alternate between for variety.

A side on view of a container of Elementall brand elemental diet nutritional formula

My journey to the elemental diet

I was diagnosed with gastroparesis about 5 or 6 years ago after what my doctor and I assume was a random virus. My digestion has been problematic since a young age, but I became distinctly unwell one weekend before my gastoparesis diagnosis.

For those who don’t know, gastroparesis is a condition where the cleansing waves of your intestines that push food through no longer function as they should. I’m lucky to have a mild enough case – some people end up vomiting up undigested food on a regular basis.

For me personally, my gastroparesis affects my day to day functioning but not to that extent. My primary symptom is pain/discomfort (almost like a stitch or being punched) in my right side, all day. Depending on what I’ve eaten, how I’ve slept or if I’m hydrated enough (among other things) it can be debilitating and have me in bed.

Gastroparesis and SIBO basically go hand in hand, so it wasn’t long before I was diagnosed with SIBO, too. When you have slow digestion, food spends more time in your intestines and has more time to ferment.

My elemental diet experience

Day one:

I have to admit, I had two margaritas the night before I started the elemental diet. Given they were off the menu for 13+ weeks (and given we were in lockdown) it seemed only fair. As a result, though, I was tired, had a headache and mostly stayed in bed. How much of this was the tequila and how much was the diet, I couldn’t say. I can say, though, that I didn’t want to be around food or look at food. Some people find they can work while they do the diet, but given my work is food, I found it impossible.

Day two

Today I oscillated between feeling well and average. I did manage to go for a small walk, but I couldn’t bear to look at food or smell food again. Brain fog definitely set in, as evidenced by the lack of notes I wrote for the next few days.

Day three

Today I was feeling quite good! I managed to get in a couple of walks and even get some work in. Given that I found it hard to look at food, this was impressive for me.

Days four to six

Were a blur. As you can see from the lack of detail in the preceding days, I didn’t have the mental energy or the inclination for writing anything lengthy. This definitely worsened from day 4-6, and I spent my days in bed listlessly watching tv. I oscillated between feeling OK and feeling nauseous and awful, and I had waves of depression over not being able to eat food.

Although I have barely needed to go to the bathroom since I started, I did have a random day of diarrhoea. I have needed a lot of naps and early nights during these few days.

Day seven

I had a random outburst of maniacal laughter with (sad) tears streaming down my face, twice. You really have to get meals in regularly so as not to your blood sugar drop. I have always been prone to tears when I’m hungry so this probably shouldn’t be surprising.

I also started getting quite dizzy and lightheaded, and was shaky going up and down the stairs.

Day eight

When I woke up today I felt like I had turned a corner. I don’t want to jinx it because I’m learning that every day brings a new surprise, but I suddenly felt like I had been propelled back into myself. I’ve been planning recipes to develop once I finish the diet, and I felt excited to get back into the kitchen. Looking at food isn’t quite as offensive as it was before.

Today I had a black coffee because I really felt like one. My doctor had said no coffee, but other people online say a black coffee is OK. I figure if little treats like coffee and tea are what get me through then that’s absolutely fine by me.

Day nine

In thinking I had turned a corner yesterday, I officially jinxed it. I woke up on day 9 assuming I’d feel as good as I did the day before, which was never going to end well. I spent the day in bed napping and was cold all day. Given that I generally have the car air on cool even in winter, being cold is notable for me.

I also had an overwhelming urge to vomit (which I didn’t) while trying to ‘eat’ my dinner, which I haven’t previously had.

Day ten

I felt quite good today, which I think was because it was my birthday. I got lots of presents and did a lot of online shopping, which distracted me from the shakes.

Day eleven

I have no notes for day eleven because I was in bed all day. I was tired, listless, lethargic and shaky, and realised that I really wasn’t getting enough shakes in.

Day twelve

I had a zoom with my doctor today and made the call to transition to a semi elemental diet. I had been less and less able to get in enough shakes (I was getting exactly half of my recommended dose in) and I was becoming extremely listless and lethargic. Needless to say that was the result of getting inadequate number of calories in.

In an ideal world I would have liked to go longer but I think it was untenable for me to continue. So, I have transitioned to having one ‘real’ meal a day, supplemented by the formula for the remaining meals. I ate dinner (pureed carrots, boiled cabbage and cooked tomatoes with a hard boiled egg) and honestly came back to life.

I was a little bloated after dinner but these days that’s basically what eating is for me irrespective. A lot of people say that their digestive system explodes when they start eating again, but that wasn’t my experience. I felt good and I didn’t have any adverse effects. Never have I been happier to eat a hard boiled egg.

Day thirteen

I’m feeling a lot better and a lot more like myself now that I’ve transitioned to eating one meal a day. I decided to eat my real food for lunch, and use the elemental formula either side of that for my remaining nutrition. Having lunch gives me something to wake up for, honestly. I’ve found that I’m bloated after lunch today, but given that my digestion is only recently back from holiday, I hear that is to be expected.

My plan from here is to continue this semi elemental protocol until I’ve been on the diet for 3 weeks. This means I’ll be doing it for 10 more days before moving on to the SIBO bi phasic diet.

Personally, I find the semi-elemental diet very doable. I was having a berry protein smoothie for breakfast prior to the elemental because my protein levels were really low. Having the elemental formula with ice is really just a speedier version of that.

Today I’m starting on Iberogast as a prokinetic, as per my doctor’s instructions. I’m also starting on oil of oregano. This is supposed to discourage the bacteria from recurring in my intestines.

An aerial view of a container of elemental diet nutrition on a white marble table. The lid has been removed to reveal a chocolate powder and a scoop inside the container.

Tips for doing the elemental diet

Always add ice and blend your shake. This makes it more palatable and a better consistency.

I found it a lot easier to make 2 scoops worth at once instead of making them one at a time. I found it overwhelming to keep going back into the kitchen when I felt shitty.

Get a metal straw because you need to sip it really slowly.

Personally, I found adding herbal tea in extremely helpful.  I also added in black tea, the jury seems to be out on whether you can have it but I would have been really depressed without it

I found I got incredibly thirsty and needed to drink water all the time. Personally, I liked drinking mineral water because it felt filling and also like a treat. It also seemed to remove the film on my tongue.

I would describe the diet as feeling like you’ve eaten soup – full of liquid and not necessarily hungry but also not satisfied per se.

A tongue scraper was really helpful to me as it felt like it kept the film on my tongue from getting too out of control.

I find that if I don’t manage to get the shakes in by around 8pm then it’s game over. It’s almost like there’s only so much of them your body will take before the nausea sets in for the evening.

Another thing worth mentioning is that if you’re prone to shakes or heart palpitations from too much sugar, it’s worth sussing out a lower carb version. I think I could have kept going if it weren’t for those symptoms.

If you have the option, get more than one flavour. It would have been amazing to break up the monotony.

A close up aerial image of a scoop of elemental diet chocolate powder on a white speckled ceramic plate

The taste

This will vary depending on which brand you are prescribed, but the taste of Elementall chocolate flavour is not bad at all. It tastes like a sweet chocolate shake with that ‘added vitamin and mineral’ flavour.

The issue I found was that it quickly gets incredibly boring after drinking 8+ a day. Eventually I found it nauseating because I had to drink it so often and it was really quite sweet.

So it’s not necessarily the taste that’s off putting, its that you’re constantly tasting the same thing.

An aerial view of heirloom carrots lined up on a baking tray, smothered in oil and dukkah. The carrots are on the right side of the image and their tops extend off to the left of the image

My results after treatment

After I finished the elemental diet, I did 12 full weeks on the SIBO bi-phasic diet. It was tough, but I think the elemental diet really set me up well. Because I had spent 12 days without any real food, I was just grateful to be eating. In addition, the toughness of the elemental diet made me determined to finish the SIBO bi-phasic diet in full.

After finishing the elemental diet and the SIBO bi-phasic diet, I successfully got rid of my SIBO. I felt great for quite a long period of time, and was able to eat more foods without issue. I have vivid memories of gorging myself on hot chips and not bloating AT ALL.

Unfortunately, time ticked on, Christmas rolled around and then I spent a year testing delicious gluten free cakes and croissants for my cookbook. My eating habits fell away, and I have ended up back at square one. And the cycle repeats!

My thoughts on the elemental diet

The diet was undoubtedly very tough for me, but not impossible. 12 days feels a lot longer than it should when you can’t eat. Everyone is different, though, and your experience might be better than mine.

All things said and done, I would do the diet again. It made such a difference in treating my SIBO when antibiotics did not. The pain was worth the gain for me, particularly after doing the elemental and SIBO bi-phasic back to back.

It would be amazing if the makers could invent a variety pack so that people don’t have to drink the same thing for days on end. A savoury dinner version and a few different flavours would have done amazing things for my willpower!

Radicchio salad with blue cheese. honey cinnamon walnuts and a sherry vinaigrette on a white marble backdrop

SIBO bi-phasic diet

In early 2023 and I started back on the SIBO bi-phasic diet. I had two years of baking sugary things for my cookbook and lots of eating holidays. My SIBO was well and truly back, so I need to bring it under control.

I attempted to start the elemental diet again (I have leftover formula from last time) but I got heart palpitations quite significantly. I also started it on a whim because of how bad I felt, which probably didn’t help with my resolve.

Although I started off strong, I fell away into old patterns after booking a few overseas trips (Sicily, I’m looking at you). I actually ate really well in Sicily but the issue was in my need to test recipes to have content to post while I was away.

So, we’re back to square one again. I intend to start the SIBO diet again soon and I will update the post when I do.

An aerial view of a SIBO friendly vegan curry in a black skillet atop a blue metal backdrop. Water glasses sit to the top of the image, catching the light. A bowl of curry sits in the bottom left of the image

SIBO bi-phasic diet recipes

I have plans for a whole suite of SIBO bi-phasic recipes as I make my way through the diet. For now, though, here are some to get you started:


    1. I have read that you can make up your own if you follow an approved recipe but I can definitely see how it would be hard to find a vegan brand/recipe. It would be so difficult to do the sibo diet as a vegan, I feel for you!

    1. Hi Mike,

      I did really well with stage 2 this time around but then I fell off the wagon at stage 2. I had some trips away and it was too hard to stick to the diet while away from home.

      I felt a lot better during stage 1 so I intend to start again after I get back from Italy in June. Hopefully I will be able to stick to it the whole time (it was much easier to do in lockdown haha)

  1. Hi Georgia!

    I’m thinking of trying this whole Elemental diet = cure my SIBO thing…can you tell us a little more about the oregano oil and pro kinetics (ie how long you took those, how often each day, morning/night/with food), as well as about any other supplements you took to transition successfully from elemental to bi-phasic to normal?

    Thank you for this detailed timeline!! It’s very helpful.

    1. Hi Julie! I did the SIBO diet in 2020 so I can’t actually remember the regimen specifically. When I do it again (which is overdue) I will keep track of it, but I do think it’s pretty individual and worth discussing with a doctor. I’m no expert in it, I just wanted to share what the experience was like from the patient perspective πŸ™‚

  2. Hi Georgia ,
    I have had SIBO for many years and also have EPI and Type 1 diabetes. I can’t work as the SIBO is so debilitating. Thank you for writing about your experiences as it has been very helpful before considering this option. I am sorry you struggle like I do. I am now going to research this more thoroughly and speak to my gastro and diabetes ed. to see if this might be an option for me.

  3. Does anyone know if we can incorporate different nutritional drinks into a 2 or 3 week elemental diet? I think I’m confused as to why we need to just drink a sweetened shake instead of incorporating a warm liquid bone broth soup into the diet? I cannot tolerate sugar, stevia, or any kind of fructose. I’ve had SIBO for over 10 years and I’m ready to go three weeks on an elemental diet. I can barely tolerate any food right now anyway, so going liquid does not even seem tough to me with my current diet restrictions. I just want to make sure I have the right nutrition and fat each day. Can you help me understand why we can only do one form of nutritional drink?

    1. Hi Bob, I think this is best something to discuss with a doctor familiar with SIBO.

      My understanding is that elemental diet is specifically formulated so that there is nothing entering the digestive tract at all – it’s absorbed prior. This is how the SIBO is starved out. Other foods, while they may be liquid, don’t work the same way. However I am not a doctor (just a fellow SIBO sufferer) so I can’t really advise you here.

      Good luck! Sorry to hear that you’re suffering so much with it, I hope it gets better soon πŸ™‚

    2. I started the Elemental Diet today (I’m so hungry!) My practitioner told me that bone broth is okay to drink so I plan to drink it. Maybe double check with yours if you haven’t already! The only other thing that she okayed was herbal tea, which is nice to add some variety.

      1. My naturopath specifically said no bone broth with SIBO (and I’ve seen this elsewhere)… something about the cartilage

  4. Are u in the UK will UK drs prescribe this for me if I have confirmed methane sibo diagnosis that they recognise and have on my notes already

    1. I’m based in Australia so I’m not sure how it works in the UK, sorry! I’d ask your Doctor or book in with a gastroenterologist who specialises in SIBO if you can.

      Best of luck!

  5. Hi Georgia! I hope you are doing well. I am treating SIBO now for the 3rd time! Since I am vegetarian (because I have to be, due to EPI), it is definitely difficult. My diet is called Vegetarian/SIBO Specific Low FODMAP, but I call it the “DON’T EAT ANYTHING DIET” I did the Elemental diet 1st, then, like you, 1/2 and 1/2 , now just the aforementioned diet, next while adding back a few foods I will start probiotics, then continuing all that – do the antimicrobials, then while weaning off all of that I’ll start the motility stuff. That is why we can’t work; we are too busy calculating and planning and cooking. But, ultimately it will be worth it, because the pain every time we eat will not happen anymore, many of our other health problems will disappear, and our clothes will fit again in the middle!!! I am so looking forward to that day!!!

  6. Hi Georgia

    Your blog is very helpful. I am on day 8 of the diet and hit a wall last night. Lots of fatigue, headache and nausea.

    i hit a wall last night and feel like I can’t do the elemental diet anymore. Mine if a vanilla flavour and I feel nauseos when I drink it 0r even smell it.

    cinaminon tea and ginger tea help some.

    I feel bloated and hope it gets better.

    Thanks very much

    1. Sorry to hear you’re struggling with it! It’s incredibly tough. I think they should sell packs of various flavours to avoid the taste fatigue but anyway.

      I think the concern is that you might not be getting enough calories if you can’t stomach the formula.

      When this happened to me I scheduled a tele health with my doctor and she advised me on how to start the transition off the diet.

      I’d recommend chatting to your doc to see what they suggest.

      Good luck! And congrats for making it to 8 days, that’s an achievement in and of itself! πŸ™‚

  7. Hi Georgia,

    I have the exact same symptom – ie stitch on right hand side under rib cage – I’ve always suspected it was SIBO related but hadn’t considered it but then to connect it with gastroparesis has chimed with me. Thanks for writing about your journey. I’m considering an elemental diet at some point but I need to full build a proper robust low-SIBO diet first to get it under control before I kill it. Then, after the kill phase, I will stick to the low-SIBO diet pretty much forever I think.

  8. How does one stick to an elemental diet if I am really underweight. When mold toxicity and SIBO struck, I lost 16 lbs and feel terrible.

    1. Hi Nancy, I’m sorry to hear that you have been unwell πŸ™

      I would definitely consult with a doctor. I know there are high calorie versions of the elemental diet but I don’t think the elemental diet is recommended for people who are underweight.

      I’m not a doctor (just someone who struggles with SIBO) so I would definitely seek medical advice.

      Good luck and I hope you improve soon πŸ™‚

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