... but it seems to work well once it's tuned in for the user. Just be sure to the user coordinates with their Doc and has family/friends to monitor them as the tuning process can take a little while and the body and mind need the time to adjust with the safety net of someone keeping an eye on the user. This is particularly important for teenagers that are on any anti-d meds but I'm pretty sure that EFFEXOR XR is not approved for use in teenagers/children. So no sharing meds for self medicating sort of things should ever be tried.