Having experienced psychotic symptoms I was prescribed Quetiapine (Seroquel) and the visions/hallucinations stopped. However, my life was made a misery by this drug and the side effects I experienced. The side effects for me were worse than the symptoms I was getting in the first place.

Constipation
Normally I have a very strong stomach and have rarely experienced constipation and certainly nothing on this scale. The constipation was extreme and made me very ill. Syrup of figs gave immediate relief but it wasn't a nice experience and I continued to suffer from stomach pains and sickness even when the doctor prescribed a gentler laxative.

Drowsiness
Actually, I'm not sure I should call this drowsiness as the effect was very strong. Life just passed me by and I was completely out of it whilst taking this medication.

Rhinitis (Stuffy nose)
As I was taking Seroquel before going to bed I found that I wasn't getting any sleep because of Rhinitis (blocked nose). This really affected me physically making me very tired but more disturbingly it was causing me to panic about my breathing and I started seeing things at night. Because of the way that Seroquel works I was advised not to use medicaton such as Benedryl or Sudafed. A very scarey experience! 

I knew that this medication was making me feel bad but because of my psychological state it wasn't until I came off the medication that I realised how much of a negative effect it had on my life. There were other experiences I had whilst on this medication but I am unsure if they were a result of my illness or the medication so I haven't listed them. If you are on this medication and suffering from the side effects then there are usually other alternatives available and I recommend you discuss them with your doctor.