Researchers finalised from a review of 24 studies on the use of Modafinil UK in healthy, non-sleep deprived individuals that Modafinil is more likely to help improve attention and learning for more complex thought processes rather than basic tasks. It did not affect working memory or understanding different viewpoints, but it improved decision-making and planning. Modafinil was found to harm creativity in a few studies, though the side effects were generally mild and included insomnia, nausea, and headache.
So, while Modafinil may improve your focus and allow you to make decisions until the wee hours of the morning, there is no guarantee that these will always be the right ones. Also, keep in mind that few studies have looked at the long-term effects of modafinil use.