How to read my vitamin D results in my blood test results? Also, is vitamin D 3000-4000 units a day safe for older adults that are in heart medication and other meds -
![Dr Sudhir Kumar MD DM on X: "Normal vitamin D level is > 75 nmol/L. Levels above 125 nmol/L is a cause of concern. So, the best level is between 75-125 nmol/L. ( Dr Sudhir Kumar MD DM on X: "Normal vitamin D level is > 75 nmol/L. Levels above 125 nmol/L is a cause of concern. So, the best level is between 75-125 nmol/L. (](https://pbs.twimg.com/media/Fvle3myaYAcWpTE.png)
Dr Sudhir Kumar MD DM on X: "Normal vitamin D level is > 75 nmol/L. Levels above 125 nmol/L is a cause of concern. So, the best level is between 75-125 nmol/L. (
![Preventing vitamin D deficiency during the COVID-19 pandemic: UK definitions of vitamin D sufficiency and recommended supplement dose are set too low | RCP Journals Preventing vitamin D deficiency during the COVID-19 pandemic: UK definitions of vitamin D sufficiency and recommended supplement dose are set too low | RCP Journals](https://www.rcpjournals.org/content/clinmedicine/21/1/e48/F1.large.jpg)