D3
I haven't had any trouble with covid. My wife had a bad case back in May but I never caught it. I credit regular D3 with helping my imunity. I was diagnosed with a Vit D deficiency in 2011. I've been taking Daily D3 since then. I'll be 70 this week. I'm not overweight or diabetic or compromised in any way. I enjoy good health and I credit my wife and the Heavenly Father the most for that. I was made this way and my wife makes sure I eat and live healthy.