Savard says that seniors of both genders often have diets poor in Vitamin B12, folic acid, Vitamin D and calcium, so they definitely need to take supplements. Depending on their specific health situation, a doctor can recommend how much extra B12 and folic acid they should be taking.
Seniors who are worried about eye health should know that the supplement lutein is present in multivitamins, in the exact recommended dose. According to Savard, anyone who says you should be taking it in addition to your multivitamin is probably part of a marketing campaign.
Strict vegetarians may need extra B12 and folic acid supplements as well. B12 is present in eggs and dairy, so vegans should get this nutrient from supplements.