Gallecina(R) capsule in COVID-19

INTERVENTION: Intervention 1: Control group: receiving common treatments, including adult cold two tablets every eight hours, one tablespoon of diphenhydramine syrup every 8 hours, vitamin C 1000 mg effervescent + placebo of Gallecina (R) capsule (made by SamiSaz Co.) three times a day. Intervention 2: Intervention group: Intervention group: receiving common treatments, including adult cold two tablets every eight hours, one tablespoon of diphenhydramine syrup every 8 hours, vitamin C 1000 mg effervescent + 90 mg capsule of Gallecina (R) (made by SamiSaz Co.) three times a day. CONDITION: U07.1 COVID‐19 disease. ; COVID‐19 PRIMARY OUTCOME: Time to recover from illness based on questionnaire. Timepoint: Before intervention and 3, 7 and 10 days after beginning the intervention. Method of measurement: Questionnaire. INCLUSION CRITERIA: Outpatients with COVID‐19 Confirmed with RT‐PCR SPO2 more than 90% Age between 18 to 60 years old