This study is a double-blind randomized clinical trial on the human resources population at Persahabatan Central General Hospital, Jakarta.~Subjects who have agreed to be included in the study will undergo an initial examination and a serological examination of IgG SARS-CoV-2 to ensure that there is no adequate immunity against COVID-19 before the study begins. After confirmed that all subjects are not included in the exclusion criteria and not infected with COVID-19, randomization will be conducted to determine who gets the Rhea®️ Health Tone or a placebo.~Evaluation will be carried out until the 84th day of giving the intervention. The subject will be monitored everyday by the research team to ask whether there are symptoms experienced by the subject, both symptoms related to COVID-19 and symptoms related to side effects drugs and adverse events.~The statistical test used in this study was the Chi-square test or Fisher's exact test.
Background : Coronavirus disease known as COVID-19 is caused by the SARS-CoV-2. Transmission of SARS CoV-2 is spreading from human to human through direct or indirect droplets, this disease then spreads very quickly to various countries until it becomes a pandemic. Rhea® Health Tone is an essential oil made from Gardenia jasminoides, Commiphora myrrha, Boswellia serrata, Daucus carota, Foeniculum vulgarae, and Olea Europeae that have antimicrobial and anti-inflammatory effects. Rhea® Health Tone also has been registed on BPOM. Even so, the efficacy of Rhea® Health Tone still needs to be studied further.~This research aimed to assess the efficacy and safety of healthtone as prophylaxis for COVID-19 in human resources at persahabatan central general hospital.The intervention group received Rhea® Health Tone 2 times supplementation 1 ml a day; meanwhile, the control group received placebo 2 times supplementation 1 ml a day.