i incresed dossage from 25 to 40 mg more than a week ago and i havent experienced any positive effect yet. just stomach constipation and well nausea the first days , now im ok, without any side effect but not feeling the therapy effects yets. i took 25 mg a week and two days ago. for the last week on 25 mg i wasnt feeling the same effects i had after the first week i took the pill. so obviously i incresed the dosssage to 40 . but i havent feel concentrated yet. would anybody explain me what happens? im fromperu . i really wanna feel with energy like i felt at the second week of my whole weekend. any advice. what is happening? maybe i have to wait a little more?