Vitamin B12 and folic acid supplements could be good for your memory. A recent study found that older adults who took them for two years had greater improvements on memory tests than those who didn’t.

In a study published in the American Journal of Clinical Nutrition, Australian researchers asked more than 700 people between 60 and 74 years old to take a daily dose of 400 micrograms of folic acid and 100 micrograms of vitamin B12 or placebo pills that resembled the vitamins.

After one year, there seemed to be no difference between the groups in how well they scored when tested for memory, attention and speed. But after two years, those who took the vitamins showed more, if modest, improvements in memory task scores.

More research is needed, especially to see if the supplements would aid the memories of adults older than those in the original group, but study author Janine Walker, a researcher at Australian National University, concluded, “(Vitamins) may have an important role in promoting healthy aging and mental wellbeing, as well as sustaining good cognitive functioning for longer on a community-wide scale.”