Caps,
 
Regarding your wife's condition, calcium with magnesium and vitamin D several times a day should help. Some calcium tablets come with magnesium and D. Otherwise they can be taken as individual tablets, at the same time.
 
My wife dramatically improved her teeth density in this way. The dentist wanted to know what she did to see such improvement. It was only Calcium, magnesium, and vitamin D, over about 6 weeks. She will also notice improvement in nails and sometimes hair as well.
 
Hope that helps.