Hi Lilpuss, and welcome,
I don't have any experience of this drug myself, but if you follow this link:
You'll see night sweats listed as a common side effect. I think this is the leaflet that comes with the drug, at least in Europe, so it should be reliable. Also if you search this website I'm sure other people have had similar experiences and can offer you advice. Note that these side effects don't always show up straight away, and can appear years after you begin treatment.
I don't suffer from this problem directly, but ever since I bought a Tempur mattress, complete with mattress protector, I have been unbelievably hot and clammy at night – I wouldn't be without it though!