also seek advice if you have symptoms while taking vitamin D, especially if you are taking more than the usual daily amount. Mayo Clinic recommends speaking with a healthcare professional before taking vitamin and mineral supplements to find out whether they are safe for you.
A blood test can help confirm whether your vitamin D level is low, normal, or too high. The NIH says levels of 50 nmol/L, or 20 ng/mL, are adequate for most people, while levels above 125 nmol/L, or 50 ng/mL, may