The purpose of this study is to investigate opportunities and challenges of carers’ support on online social platforms. We conducted a systematic literature review of 20 journal articles, and explored positive and negative aspects of online social platforms in three main categories: (i) Carer Wellbeing, (ii) Care Service, and (iii) Common Opportunities or Challenges. A Demographic analysis of publication year, country, user type, and research method have been discussed. The study uncovered that online platforms have a proportional amount of positive and negative impacts. We found that (i) the challenges guide us on how to educate carers and plan for uncertainties, and (ii) the opportunities shed a ray of hope on ways to assist the carers using online social networks. Results guide future research in mitigating challenges and strengthening opportunities for supporting and empowering carers on online social platforms.