Inclusion Criteria:  Age 18 to 99 años, with capacity to provide informed consent. Covid-19 diagnose, confirmed by PCR or antigen test Predominantly respiratory presentation. Additional minor digestive or/and neurological clinical manifestations will not lead to exclusion. Axillary temperature equal to or higher than 37ºC, at some point during the evolution of clinical signs prior to recruitment, or at the moment of recruitment. Being between days 1 and 9 of evolution of the disease, counting from the inception of symptoms. Not having received any Covid-19 vaccine. Capacity to complete the treatment, i.e., not having any swallowing difficulties, or any physical or psychiatric condition that would prevent the patient from taking caplets. Patients that after being evaluated at the emergency room are deemed to be in a condition to follow treatment at home, with follow up by their family doctor, i.e., that will not be hospitalized.  Exclusion Criteria:  Patients under 18. Patients without a PCR or antigen test-based diagnose. Asymptomatic patients. Patients with an evolution higher than 9 days after the inception of symptoms Patients with a predominantly digestive presentation. Patients with a hypersensitivity to the active principle, any of the excipients of the drug or to the Asteraceae family of plants. Patients with systemic progressive diseases such as tuberculosis, diseases of the immune system, collagenosis, multiple sclerosis múltiple, AIDS, VIH infections and other immune diseases Patients previously treated at home with oxygen therapy. Non-collaborating patients. Patients without capacity to provide informed consent. Pregnant or nursing patients. Patients with an active immunosupressive treatment. Women in a potentially fertile age will need to provide a negative pregnancy test before being including in the study. Subsequently, they will be instructed about the convenience of not becoming pregnant during the study. Only women using reliable birth control measures will be included. WOCBPs unable to guarantee reliable birth control during the study, or using unreliable methods such as coitus interruptus, nursing or just spermicides, will be excluded.