"i have been on brintellix for about 3 weeks now. so far i&#039;ve noticed increased energy, weight loss, nausea, headaches, loss of sleep, nightmares, and some aggression.  i have finally found 1 that works and i&#039;m having all these side effects.  i started out on the 10mg and still currently taking the 10mg. maybe i need to be on a lower dose.  i also take ambien 10mg for sleep.  "