Hi, I have bipolar type 1 and am currently on 800mg Valproate Sodium and 10mg Olanzapine. I was pretty skinny before and my weight didn't usually change until I took the meds.

I have been on meds for three years now, and I gained more than 20kg, but luckily I have no other side effect and I have been stable all these time. Last year I started to taper my meds with my psychiatrist's guidance, our goal is to be completely off Valproate Sodium but keep 5mg Olanzapine just in case. We taper the meds every six months, I thought my weight will finally be declining but nothing happened, my weight and body shape just stay the same. (I started to go to the gym six months ago, I haven't been followed a strict diet tho.)

Is this normal? Will I lose weight after I am off meds? Or is it just me not trying hard enough?

Please help:(