Do Modapills Have Cognitive Enhancing Effects?

In one 2003 trial, participants reported feeling more alert, attentive, and energetic while taking the drug. In addition, some improvements in specific memory tasks, such as digit span and visual recognition, were reported. Furthermore, there was a decrease in impulsivity. However, a 2014 trial found improvements in impulsive decision making but no difference in performance accuracy.

A review of 19 placebo-controlled trials finalised that Modafinil UK works best for fatigued peoples and has only a limited effect on improving attention, executive functioning, memory, or processing speed in other people.

Modafinil or armodafinil (a similar substance) had a mild effect on reducing negative symptoms of schizophrenia in people who were not chronically ill or had a high negative symptom burden, to begin with, when used as an add-on treatment for people with schizophrenia.