It seems like the ones with C. Difficile have the most success, ones with Ulcerative Colitis have mild success and ones with IBS have very little success (probably because they have Candida issues lurking). This woman didn't have much success fixing her IBS with HPI:
there's a few other testimonials in this group discussion (mostly UC sufferers), most of which didn't see great results.
I'm going to attempt another Fecal Transplant sometime soon, using my Mom as a donor (getting her tested now per Borody's recommendations). I'll start with a lavage the day before (like a colonoscopy prep) then do an enema, similar to how Dr. Louie does with 800mL to 1400mL fecal slurry, and a lot of wiggling about to get the stuff all over my innards. Then I'll do an enema everyday for 10 days (it's a lot of work and not pleasant experience, but I feel it has the potential to improve long term health and reverse some antibiotic damage. Animals do it in nature all the time, why can't we!!).
The big question is if taking antibiotics before the Fecal Transplant will improve chances of new bacteria making a home. Most C. Difficile patients are pretty barren from bacteria after months of Vancomycin. This guy 'OvErKiLL' recommends not taking antibiotics:
I think Fecal Transplant has the potential to really help boost your good bacteria numbers. The question is if it's best to have a clean slate with antibiotic treament first, or maybe one can crowd out the bad stuff by supporting the new recruits with a proper diet. My first attempt at Fecal Infusion, I managed to retain only one enema for several hours (and probably not very deep), and I can safely say that bacteria stayed with me for a month, based on color and smell of stools, and gas. So if I can improve this by doing a lavage, having larger amounts of fecal slurry to cover more surface area of 6ft. long large intestines, and repeating procedure for 10 days (and if I fail to hold it in several hours, try again the next day, can't give up that easy). The biggest challenges might be having a good donor that doesn't mind multiple deposits, and having the time to do this immediately after your donor provides their stool.