Background: Patients in palliative care are usually conceptualised as recipients of support from family caregivers. Family caregivers in palliative care are typically defined as providers of support to patients. Little is known about reciprocal dimensions of support provision between patients and family caregivers in palliative care. Aim: To identify processes of mutual support between patients and family caregivers in palliative care and factors that contribute to or obstruct mutual support between patients and family caregivers in palliative care.