Background: Although a new potassium-competitive acid blocker (P-CAB) vonoprazan has been developed in Japan, no data are available regarding long-term vonoprazan or vonoprazan and acotiamide combination treatment in patients with functional dyspepsia (FD).
Methodology: A total of 73 consecutive patients with FD diagnosed according to the Rome III classification were enrolled. Forty-two patients with FD were treated with vonoprazan monotherapy and thirty-one patients with FD were treated with vonoprazan and acotiamide combination therapy for 24 weeks.