Can't lose weight (mirtazapine)

Sorry to say I think the bad news is that sertraline and even lamotrigine which is supposed not to,  can also contribute to weight gain. The drugs mess with your appetite and your metabolism though it varies from person to person. It continues to be a problem for me, a fat blob. I think all you can do is keep eating healthily and the rest and hope your weight will  go down slowly.I'll be keepion an eye on the discussion in case someone has the answer.

I was on sertraline years ago and I actually found I lost a bit of weight.

Now I'm on lamotrigine and valproate and have been for a few years now. Last summer I was really fit and busy and lost quite a bit of weight. I ended up having a decent figure which for me was remarkable. So you can lose weight on some of these drugs.

But one thing to bear in mind is any underlying depression or anhedonia. Do you feel like exercising much? The only times I've managed to lose weight is when I've exercised heaps or had such bad depression I barely ate. So maybe doing heaps of exercise?

I haven't experienced weight gains to medications where that is included in possible side effects, but I've also grappled with being overweight. For me, the process if one step forward, two back, three steps forward, one back, etc. I had to deal with addictions: caffeine being the most recent. I was shocked by how much more stable I've been without this upper, which I still have occasionally (I love good coffee!). Wine is on the list of what I had to deal with, after finding I had developed alcoholism, and now it is an occasional pleasure. And I had to deal with sugar addiction. Now I have very very few sugar foods. As ugly a truth as it is, I think the bipolar illness is made worse with those self-medicating items, not to mention the calories they contain. Last, I was advised to try gluten-free. Four years later and my weight is totally normal and depression a bit less, and almost no grass seed allergies. I hope any of this is helpful.