Been on 300 mg for years and just increased to 600 mg after a seriously stressful life event. Been on that dose for a little over a week and my levels are .4 so not quite in the therapeutic range but has anybody experienced a slight apathy or even a slight depression or flat on a dosage change? 

I’m hoping that this will pass. Plan on trying 750 mg to see if I can get within the therapeutic range, I just don’t want to feel flat or like I was going under before the increase.