Hi.how to know when i have to stop taking risperidon, escitalopram and biperiden? im taking this meds for 2 months now.

Depends on diagnosis: If you have a resolving depression, you may be able to get off Risperidone and biperiden, but that's something you need to talk to your doc about. If you've had hallucinations or delusions, a low dose of Risperidone may be something you need indefinitely. In other words, this is not something that can be clearly answered online. Discuss with your doc or get a second opinion.

Ask your doctor: While you do not say why you are taking these medications, they are medications that in this combination would not be prescribed without significant symptoms; ie, the problems for which these might have been prescribed are not of short term duration, or that there may have a high risk of recurrence; ergo, it'se unlikely that two months will set everything aright bring this question to your md.