This handbook provides an introduction to COVID-19 and herbal medications that boost the human immune system against SARS-CoV-2. The topics are covered in 7 chapters starting with an introduction to the disease, followed by notes on nutraceuticals and common herbal medicines that have therapeutic potential by enhancing the patient's immune response. Special topics such as COVID-19 risk factors and Indian traditional medicines are also included to supplement the contents. The editors have taken advantage of the vast body of knowledge accumulated since the start of the COVID-19 pandemic in 2019. Chapters are written in simple language with structured headings to facilitate a quick understanding of the subject. References are provided for scholars interested in further readings. The book is a quick guide on immune boosting medicines for a broad audience that includes general medical practitioners, nurses, caregivers, and public healthcare workers involved in clinics working in local communities.