Study aim: Evaluation of the effect of herbal medicine containing Saatar, Hofarigon and Fennel on reduction of pulmonary complications of COVID-19 in patients Design: Clinical trial with control group, with parallel groups, randomized, non-blinded Settings and conduct: This clinical trial study will be performed in Razi hospitals of Mazandaran University of Medical Sciences. Among referred patients, 40 patients will assigned into two groups of 20. First group will revived kaletra + hydroxychloroquine + herbal medicine and the second group, kaletra + hydroxychloroquine. Participants/Inclusion and exclusion criteria: Entry requirements: Covid 19 patients with CT scan confirmation and clinical symptoms Conditions of non-entry: Covid 19 patients have severe underlying diseases Intervention groups: Intervention group: Kaletra 200 mg/50 mg tablet every 12 hours + hydroxychloroquine 200 mg tablets every 12 hours + herbal medicine containing sage, hofariqun and fennel (5 ml 3 times a day) Control group: Kaletra 200 mg/50 mg tablet every 12 hours + hydroxychloroquine 200 mg tablets every 12 hours Main outcome variables: Fever; Lymphocyte count; ESR