inclusion criteria: belongs to moderate case diagnosed using pcr test showing a vitamin d deficiency (<30 ng/dl). exclusion criteria pregnant or doing breastfeeding patient under specific medication (tuberculosis, or hiv, or malignancy) or undergo hemodialysis receive vitamin d supplementation prior to allocation. tested negative less than 5 days after receiving vitamin d creatinine >2,0 mg/dl blood calcium >10,5 mg/dl. ventilated hypersensitive to vitamin d consistent desaturation <85% with oxygen supplementation and require high-flow nasal cannula (hfnc)/extracorporeal membrane oxygenation (ecmo) via a ventilator. refuse to attend blood examination for follow up

inclusion criteria: belongs to moderate case diagnosed using pcr test showing a vitamin d deficiency (<30 ng/dl). exclusion criteria pregnant or doing breastfeeding patient under specific medication (tuberculosis, or hiv, or malignancy) or undergo hemodialysis receive vitamin d supplementation prior to allocation. tested negative less than 5 days after receiving vitamin d creatinine >2,0 mg/dl blood calcium >10,5 mg/dl. ventilated hypersensitive to vitamin d consistent desaturation <85% with oxygen supplementation and require high-flow nasal cannula (hfnc)/extracorporeal membrane oxygenation (ecmo) via a ventilator. refuse to attend blood examination for follow up