Yes. I had a relative very sick with colon issues over about 8 months of 2012. They thought that the antibiotics he had gotten for a foot infection, also killed off his “good bacteria”, and one option they discussed was the fecal transplant. At one point, the relative was sure he was going to die, had lost massive amount of weight, was giving me info on what to do if he did not make it through. I think he would have recovered much faster, had they proceeded with this treatment option.
That must have been a miserable experience for your relative.