How do i deal with or avoid the crash with vvyance which feels like anxiety and irratability?

Modify meds: Many people experience these types of symptoms when their medications are wearing off. There are several ways this can be addressed: modifying medication dose; adding a shorter acting medication shortly before main med wears off; addition of a complimentary medication such as Kapvay; changing medications altogether. Of course, this should all be done under the guidance of your prescribing Dr.