DHEA dosages are usually around 25mg per day and is recommended to people who are aged 30+. As males age, their natural DHEA levels decline, and with that the levels of testosterone decrease as well. When testosterone decreases, men start to notice effects such as fatigue, decreased drive, and loss of libido amongst others. When taken daily, some users noticed an increase in motivation and drive; however, this is on a case by case basis.
Like with many supplements, users often cycle DHEA supplements. However, this is because DHEA effects your endocrine system and has the ability to disrupt the natural homeostasis of your hormone levels. DHEA also converts to a variety of additional hormones, one of which is estrogen. Prolonged exposure to estrogen in males will have negative effects, hence users choose to cycle this supplement (for example: one month on, one month off). Be sure to monitor your hormone levels.