Abstract
COVID-19 is a terrible pandemic that afflicted all world countries in 2020. Despite drastic efforts exerted by all nations to accommodate the humanitarian, economic and health burdens are increasing. Saudi authorities showed excellent performance in managing the COVID-19 pandemic via their strict preventive measures and providing the best medical care and facilities to all people (citizens and non-citizens equally) for free. That merciful attitude was fruitful in minimizing morbidities and fatalities are far below the international standards. However, fears and concerns may be great worldwide if a second wave of the pandemic emerges in 2020 winter. This article aims at synergizing the existing pharmacological drugs by medicinal plants. Pharmacological treatments given are variable among treatment protocols with highly variable treatment outcomes. Side effects of such pharmacological treatments are still a big concern. Medicinal plants are highly ubiquitous safe natural treatments that contain numerous antioxidants, antiviral and antibacterial ingredients. These are also expectedly to decrease pharmacological treatment side effects, combat SARS-COV-2 virus and exert lung-protective effects. Nigella sativa is a prophetic medicine remedy (and its active ingredient thymoquinone) exert antiviral, antioxidant (tissue-protective effects), antibacterial and improve lung functions. Costus, fennel, senna and honey are all prophetic medicine remedies that exert lung-protective, antibacterial and antiviral effects. Chamomile is another medicinal plant that exerts antiinflammatory, antiviral and tissue-protective effects. Citrus fruit and clove exert promising antiviral effects. Availability of all those medicinal plants worldwide at cheap prices encourages their use as nutritional adjuvants to synergize pharmacological treatments when treating COVID-19 cases aiming at attaining better therapeutic outcomes.

Key words: COVID-19, nigella sativa, costus, senna, fennel, orange, chamomile.