Background Family caregivers of frail older adults experience high levels of stress. Mind-body interventions (MBIs) focused on caregiver stress are often limited in teaching approaches, difficult to practice, and costly. A social media–based MBI embedded with mindfulness meditation (MM) and self-administered acupressure (SA) may be effective for family caregivers, offer greater usability, and lead to greater adherence. Objective The aim of this study was to test the feasibility and preliminary effects of a social media–based MBI embedded with MM and SA on family caregivers of frail older adults and to investigate the preliminary effects of the intervention using a pilot randomized controlled trial. Methods A 2-arm randomized controlled trial design was adopted. Family caregivers of frail older adults (n=64) were randomized into either the intervention group (n=32), receiving 8 weeks of social media–based MM and SA, or the control group (n=32), receiving brief education on caregiving for people with frailty. The primary outcome (caregiver stress) and secondary outcomes (caregiver burden, sleep quality, and mindfulness awareness and attention) were measured using a web-based survey at baseline (T0), immediately after the intervention (T1), and at the 3-month follow-up (T2). Results The feasibility of the intervention was established with a high attendance rate (87.5%), high usability score (79), and low attrition rate (1.6%). The generalized estimating equation results showed that participants in the intervention group at T1 and T2 experienced a significant improvement in stress reduction (P=.02 and P=.04, respectively), sleep quality (P=.004 and P=.01, respectively), and mindful awareness and attention (P=.006 and P=.02, respectively) compared with the control group. There were no substantial improvements in caregiver burden at T1 and T2 (P=.59 and P=.47, respectively). A focus group session conducted after the intervention had 5 themes: impact on the family caregivers, difficulty in practicing the intervention, the strength of the program, the limitations of the program, and perception of the intervention. Conclusions The findings support the feasibility and preliminary effects of social media–based MBI embedded with acupressure and MM on reducing stress among family caregivers of frail older people and enhancing sleep quality and mindfulness levels. A future study with a larger and more diverse sample is proposed to evaluate the longer-term effects and generalizability of the intervention. Trial Registration Chinese Clinical Trial Registry ChiCTR2100049507; http://www.chictr.org.cn/showproj.aspx?proj=128031

BACKGROUND Family caregivers of frail older adults experience high levels of stress. Mind-body interventions (MBIs) focused on caregiver stress are often limited in teaching approaches, difficult to practice, and costly. A social media–based MBI embedded with mindfulness meditation (MM) and self-administered acupressure (SA) may be effective for family caregivers, offer greater usability, and lead to greater adherence. OBJECTIVE The aim of this study was to test the feasibility and preliminary effects of a social media–based MBI embedded with MM and SA on family caregivers of frail older adults and to investigate the preliminary effects of the intervention using a pilot randomized controlled trial. METHODS A 2-arm randomized controlled trial design was adopted. Family caregivers of frail older adults (n=64) were randomized into either the intervention group (n=32), receiving 8 weeks of social media–based MM and SA, or the control group (n=32), receiving brief education on caregiving for people with frailty. The primary outcome (caregiver stress) and secondary outcomes (caregiver burden, sleep quality, and mindfulness awareness and attention) were measured using a web-based survey at baseline (T0), immediately after the intervention (T1), and at the 3-month follow-up (T2). RESULTS The feasibility of the intervention was established with a high attendance rate (87.5%), high usability score (79), and low attrition rate (1.6%). The generalized estimating equation results showed that participants in the intervention group at T1 and T2 experienced a significant improvement in stress reduction (<i>P</i>=.02 and <i>P</i>=.04, respectively), sleep quality (<i>P</i>=.004 and <i>P</i>=.01, respectively), and mindful awareness and attention (<i>P</i>=.006 and <i>P</i>=.02, respectively) compared with the control group. There were no substantial improvements in caregiver burden at T1 and T2 (<i>P</i>=.59 and <i>P</i>=.47, respectively). A focus group session conducted after the intervention had 5 themes: impact on the family caregivers, difficulty in practicing the intervention, the strength of the program, the limitations of the program, and perception of the intervention. CONCLUSIONS The findings support the feasibility and preliminary effects of social media–based MBI embedded with acupressure and MM on reducing stress among family caregivers of frail older people and enhancing sleep quality and mindfulness levels. A future study with a larger and more diverse sample is proposed to evaluate the longer-term effects and generalizability of the intervention. CLINICALTRIAL Chinese Clinical Trial Registry ChiCTR2100049507; http://www.chictr.org.cn/showproj.aspx?proj=128031