Better living through chemistry! My doctor checked my vitamin D levels and they were very low. I started taking the recommended daily intake of 1000 IU. After

Better living through chemistry! My doctor checked my vitamin D levels and they were very low. I started taking the recommended daily intake of 1000 IU. After reading that the analysis setting the RDI for vitamin D was faulty, I went on double the RDI, 2000 IU. That has made a marked improvement in my mood and helped with the stability of my sleep cycle. As a bonus, my vitamin D levels are now spot on, and it offers some protection against the worst effects of COVID-19. Also, I take Vitamin B for focus.