I am 42 years old and having knee discomfort and also stiffness in body - there is no pain but feel less support is there in my knees. Few years back orthopedic doctor said I have calcium deficiency. If I take calcium pills, get stomach upset.. I do not take milk. So my condition is not improving. I am also taking calcirol 60 k sachet once in week for 6 weeks now as my vitamin d was 17.