I had ordered some supplements that can increase my cognition and focus during work hours and so far what I can tell is that they WORK! I'm using them for a 4 days now and I started noticing an increase in focus on the second day, so kudos Supplemented.co.uk. The only reason I leave 4 stars is the shipping - please use international shipping with tracking since different countries have different partners with the shipping company that you use - in my bulgarian case - two carriers deliver the packages from royal mail so I had to call them both to find which one had my package.