I noticed the title of this thread, and figured I would post my experience with FMT. I used to have chronic constipation for about 15 years. My bowel frequency ranged from 3-days (at their best) to about 7 days (at their worst). I tried everything under the sun, probiotics, fiber, magnesium, C, many many hundreds of different supplements, trying to find a resolution to my chronic constipation. Nothing worked except the FMT. Within 4 months following the FMT, my constipation resolved and now I have soft daily BMs (not rock hard anymore, but like a banana).
Also, all my food sensitives resolved as well. I was on the GAPS diet for many years, and also sulfur/thiol diet, and reacted to pretty much most foods. I could only eat about 5 or 6 different foods. But today I can say that I can comfortably eat even dairy and gluten again (the biggest offenders for most people). I can even eat ice cream, pizza, and McDonalds (though I only did so just to test myself... I plan to continue to eat healthy). No more blood in my stools either. I just made myself a grilled cheese sandwich for the first time in about 12 years. All of this would not be possible without the FMT.
I am a mechanical engineer, so I am not one to use the word "miracle" or "cure" loosely. But for me, the FMT is closest to a miracle cure than anything else I have tried under the sun.
But there is one thing I feel necessary to note: I not only took it rectally, but also orally. I was concerned I was not feeling anything from the rectal administration, so I tried making my own pills. To my surprise, I felt immediate improvement---literally that night. I have heard this happens sometimes: Some people feel nothing with rectal FMT but find relief with oral FMT. So I figured I would mention it here (for me, I also had SIBO, so much of my problems were further up the intestines).
I went to Taymount by the way. So I got a full course of 10 samples from 10 different donors.
I hope info this helps everyone here. If you guys have questions, I would be happy to try to answer them.