Acute mood but not cognitive improvements following administration of a single multivitamin and mineral supplement in healthy women aged 50 and above: a randomised controlled trial

This 2015 randomized controlled trial examined the acute effects of a single dose of a multivitamin, mineral, and herbal (MVMH) supplement on mood and cognitive performance in 76 healthy women aged 50 to 75. Results showed significant improvements in mood—specifically reduced mental stress and increased calmness—within one to two hours