As we age, we eat less, cook less, and our metabolism slows. On average, seniors eat 1,200 calories a day. Meals are less likely to be balanced and drug regimens—such as corticosteroids, anticonvulsants, thyroid hormone, antibiotics, laxatives, or diuretics—may interfere with how some vitamins are absorbed by your body. Depending on your health and lifestyle, a multivitamin could be an essential addition to your daily routine.

Older people can easily become deficient in vitamins D, B6, and B12, and minerals like folic acid, iron, zinc, magnesium, and calcium. This is especially true if you lack exposure to sunlight or can’t eat certain foods. Lack of vitamin B12 can occasionally mimic more serious problems like confusion and memory loss, so if you’re experiencing these symptoms, make sure you’re checked for vitamin deficiency as well.

Some studies show that seniors’ immune systems may benefit from vitamin E in levels higher than the recommended daily dosage. But remember, your metabolism has slowed down; vitamin doses that are easily tolerated by younger people may make you sick. Ask your doctor to help you create a personalized vitamin plan. An extra pill or two first thing in the morning can make a huge difference in how you feel.