We investigated the pharmacist-patient relationship, conceptualizing its in
terpersonal constructs and dynamics using social exchange principles. The c
onstructs of felt indebtedness (FI), collaborative willingness (CW), interp
ersonal relationship quality (IRQ), medication use beliefs (MUBs), and crit
ical interpersonal incidents (CII) between pharmacist and patient were prop
osed, measured, and modeled. Patient responses were collected using intervi
ews and mail surveys in 2 pharmacist-managed anticoagulation clinics. Highe
r IRQ levels predicted greater FI toward and CW with pharmacists (p < .01).
MUBs predicted CW with IRQ mediating the association (P < .01). Patients r
eporting positive CII gave higher IRQ ratings and expressed greater Fl (p <
.05). Findings suggested that patients' perceptions of their pharmacists,
and not their therapy, may lead to increased interpersonal exchange and pat
ient collaboration in care.