Stoopid: take both. Vitamin C vs. Vitamin D: What’s more important for your immunity? | Times of India

https://timesofindia.indiatimes.com/life-style/health-fitness/web-stories/vitamin-c-vs-vitamin-d-whats-more-important-for-your-immunity/photostory/79566431.cms

Humans make Vitamin D when tanning. However, while most mammals also make Vitamin C from sun exposure humans do not.

In the cyber age, 1000mg of liposomal C (or 5000mg of regular C) & 5000 iu of Vitamin D daily is a good baseline of use for BOTH.