Is there a replacement for Ketrel that does not cause weight gain side effects?

The substitute is from a pharmaceutical point of view the same drug, but from a different manufacturer. Ketrel contains quetiapine and if there are any side effects, the active substance is responsible for them. Any other drug with quetiatherapy will therefore work the same and will have the same possible side effects: https://www.gdziepolek.pl/artykuly/czym-sa-zamienniki-lekow you are probably asking about a completely different drug that can replace Ketrel. Here, however, there is no definite answer, since it all depends on the specific symptoms in a person. A doctor should decide whether to change the treatment: https://www.gdziepolek.pl/telekonsultacja