Been a Clusterhead for 45 years, at 60, I'm hoping to be geesing out. My question is that I have my D tested every 3 months with a 10,000 IU every day. My readings have been in the upper 60"s. Started a new cycle with only major Shadowing but nothing on the Kip scale in reguards to pain. How much should I increase the vitamin D to get to the proper level. I take the rest of the D regimine, as well as 240mg of Verapamill twice daily.