"highly rate this medicine. it&#039;s not an anti-depressant but with depression comes a lot of sleepiness which this is great for. also the ad&#039;s often cause sleepiness. modafinil does what it says it does. it keeps you awake/alert and combats ad induced fatigue/tiredness. i&#039;d question if it makes you &#039;smarter&#039;. for me (83kg, male, 27 yo) at 100mg it is a mild keep me awake. at 150 it&#039;s perfect. at 200mg it&#039;s stimulating, alerting and induces mild hypomania (which is okay but i feel slightly too &#039;buzzed&#039; at 200mg). no bothersome side effects experienced other than mild hypomania which is sometimes pleasant and not too alarming. note - i am prone to anxiety but this did not increase anxiety levels for me. do not take 8 hrs b4 planning on sleeping."