The 20 trial participants will be randomized in a 1:1 ratio to one of two arms: the control arm [not receiving Allogeneic Human Stool in Glycerol (10%; AHSG) via Fecal Microbiota Transplant (FMT)] and the experimental arm (receiving AHSG via FMT). Participants in the control arm participants can crossover to receive the treatment after completing a study cycle without FMT. Each cycle lasts 6 weeks and participants will complete a maximum of 2 treatment cycles; participants randomized to the experimental arm will complete a maximum of two cycles and those randomized to the control arm will complete up to three cycles. Upon completion of the final cycle, all trial participants will be followed for just over 6 months.