I don't see why your mom couldn't take it. In terms of age, you probably want to make sure that your mom gets the supplementation she needs from food as well as the multivitamin. There are generics like Calcium, folic acid, etc that a regular multivitamin doesn't provide entirely. Notice also that in regards to a vitamin, there is the amount on the pill and the amount that the body actually absorbs. Check the nutrition articles.
Make sure she takes her multivitamin first thing in the morning, when her body needs it the most. The same applies to us though.
Nothing seems tiresome or painful when you are working for a Master who
pays well, who rewards even a cup of cold water given for love of Him.
- St. Dominic Savio (1842-1857)
We must pray without tiring, for the salvation of mankind does not depend on material success, nor on sciences that cloud the intellect. Neither does it depend on arms and human industries, but on Jesus alone.
- St. Frances Xavier Cabrini (1850-1917)