I was just wondering if anyone could please help! I was on 100mg of Sertraline for a few months but I've been changed over to Mirtazapine in recent weeks and have increased to 30mg 3 days ago. I thought by switching from one to the other that withdrawal wouldn't really affect me but these brain zaps are getting worse and worse! I've been off Sertraline for 3 weeks now, has anyone experienced this before?? I've also noticed it gets worse as the day goes on but I've woken up with them this morning! Any advice is greatly appreciated