Also, "fecal transplant" is marketable only to weirdos. "Probiotic infusion" would work better.
For those who want to gain some artistic talent, there's this (but is expensive):
You want to land a substantial amount of, ahem, shit in there, since don't just want it to colonize one portion of the gut, and it's got quite a lot of competition.
So you would be talking a truly astonishing number of pills, I think, to compare to the volume you can manage with a tube.
WP suggests that it's about 100g (or 100000mg) of actual feces then mixed in a larger volume of saline or milk, and you'd probably need to have additional volume for assumed losses and whatever coating you think would work.
That is a _huge_ amount to put in pills.