OK... Just received my blood work back.... I have to have this done every 6 months... All ok including cholesterol - good and bad- Thyroid, sugar, etc. BUT my vitamin D was very low.... Still don't understand why??? Now on D2 1.25 mg (50,000 units) for the next three months. Did some research.... Vitamin D defiency can cause depression, bone loss, nail growth... and yes, my teeth look like ice thin all of a sudden.... ghrrrr.... wonder if this had anything to do with my latest panic/anxiety/PSTD episode combined with all the life drama???? I took my first pill Friday... and feel now like a totally new person! No naps during the day... no going to bed before 11 am.... Who would have guessed!!!! Hugs