Hi doc! I will taking my half an hour from about 4 months now and in past few weeks I felt disturbance in stomach, so I started taking pand after modafinil. This this somewhat yours but when after few weeks I again started feeling issues in my stomach after repeating the cycle so what is the right way to take my definit as my doctor suggested me for taking it one hour prior but that didn't work well for me because after taking I started feeling constipation. So should I take pand prior to modafinal or post?