I suffer from Bipolar II and co-morbid anxiety disorder. For a while the anxiety disorder was treated by the Lithium I was taking. However, after taking an over the counter remedy for constipation the Lithium was flushed from my system (I went from a blood level of 0.95 down to a level of 0.41). Increasing my Lithium dose returned my blood level. However the anti-anxiety effect was lost. Does anyone know how long it will take for the anti-anxiety effect to return? My doctor says the time scale is in months.