I have very little direct personal experience with gastrointestinal issues, but many people have asked me about it, and many people have tried it for themselves and subsequently told me about it. I will try to summarize what people have told me.
The majority (probably 75-80% or more) told me that they felt that ICES-PEMF was very helpful for their GI issues. This covered a very wide range of GI issues, so I remain skeptical but optimistic . It may work by direct nerve (or other) tissue stimulation, or it may work by the generic beneficial mechanism of reducing inflammation, which ICES-PEMF is known to do based on the GLP third-party testing laboratory data that I have.
As is generally true with PEMF: there are no magical special frequencies, and there are no universal protocols that you need to adhere to. Similar to what people report for all other applications of ICES-PEMF: they try two or three different approaches, usually starting with our default settings (Omni8 at intensity 9), and within a few days they generally find some arrangement that gives them very satisfactory results. But exactly what they do varies quite a lot from person to person. So any advice you get may be quite specific for them as an individual, but you should generalize it to incorporate the concept of “that worked well for them.”
If what you are looking for is an assurance that a specific device and protocol will work, you are unlikely to find that until you approach a PEMF manufacturer of low integrity that will tell you anything necessary to get you to write a check.
The reality of PEMF in general though is that it seems to have remarkable benefits for most people for a very wide range of problems, the biological mechanisms of these benefits remain unclear, the safety concerns are virtually non-existent, but individual responses to PEMF do vary.