I follow a low fodmap diet through a dietician but this alone does not help constipation. Only the bloating.
You need to take a high amount of magnesium citrate or oxide. About 800 to 1200mg. I have had Ibs c almost my whole life and am now in my fifties. This is the best natural supplement to take for this condition and I have tried many. Even my consultant recommended it. I take it every day. You must take it on an empty stomach just before bed with lots of water. I would start with a high dose initially just to clear you out. Even if it means taking a few capsules. I sometimes take 6 200mg capsules. Capsules are the best not tablets and it has to be citrate or oxide as these are the ones that work for constipation. There is a lot of information about constipation and magnesium on the internet. The ones I take are either Now foods Magnesium citrate, Solgar Magnesium Citrate or Life extensions. I get mine from the US on a site called iHerb, but you can get them on Amazon. There are other magnesium oxide products specifically for colon cleansing called Mag 07, Colosan and Oxypowder. They are a bit expensive but are amazing. I use these in between. No cramps no bloating, just relief. You can get these on Amazon as welL.
Fodmap is great there's an app you can down load there's a one off payment of 3.99 but it gives you all the information you need it also allows you to scan barcodes and tells you if it's ok or not x
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