Qualitative interviews conducted with patients and family caregivers to explore their experiences of treatment for hypertension and cardiovascular disease at government health facilities in Kiambu County, Kenya during 2022-2023. Interviews were conducted in-person by three interviewers: (1) Interviewer A: Male, Swahili/English speaking, qualitative researcher at KEMRI-Wellcome Trust, Nairobi, Kenya; (2) Interviewer B: Female, English speaking, qualitative researcher at LSHTM, London, UK; (3) Interviewer C: Male, Swahili/English speaking, qualitative researcher at KEMRI-Wellcome Trust, Nairobi, Kenya. Data was transcribed and translated into English by professional bilingual transcribers/translators employed by KEMRI-WT. Transcripts were reviewed by interviewers  A and B.