I recently started taking 7.5 mg. I feel so groggy in the morning, and tired through the day. I figured that the half life of mirtazapine is 20-40 hours. I don't know the mechanism of mirtazapine, but for some slow release meds, crushing the pill, makes it release instantly, thus, the half life is significantly reduced. Does anyone happen to know if this applies to mirtazapine (remeron) too?