I have been collecting studies related to treatment and prevention of the common cold for a while now. Every time I have a cold, I spend some time growing the l

I have been collecting studies related to treatment and prevention of the common cold for a while now. Every time I have a cold, I spend some time growing the list. So far, Vitamin D3 is one of the more promising treatments in the list. Here are two interesting RCTs regarding Vitamin D and respiratory tract infections: Preventive Effects of Vitamin D on Seasonal Influenza: https://journals.lww.com/pidj/fulltext/2018/08000/preventive_effects_of_vitamin_d_on_seasonal.5.aspx https://journals.lww.com/pidj/fulltext/2018/08000/preventive... Vitamin D Supplementation for the Prevention of Acute Respiratory Tract Infection: https://academic.oup.com/jid/article/202/5/809/1746565 https://academic.oup.com/jid/article/202/5/809/1746565