Today was an unbelievably strange, confusing, surreal experience.
4 days ago I started on 50mg Seroquel to help with my ADHD and related issues such as insomnia and GAD. 
Basically; I could be a lot worse. I’ve also struggled with addiction in the past, but nothing life ruining.
I’m a 24 year old male. 

Took my pill at 11pm last night, At around 8am this I started to become anxious and paranoid (I worked with 4 other people today, including my girlfriend whom I have a very healthy and loving/trusting relationship with).

I’ll skip how it progressed because it’s detailed and confusing to remember, but within a couple hours I was experiencing delusional thinking, paranoia, I’d become stuck in a loop of forgetting things, going to and fro my car to retrieve something, then once I got it, leaving something else and going back. 

To my recollection this would happen every 20 or so minutes, at one point I asked my supervisor I had to go for a drive. 
He said “sure, May I ask why?”
And it completely triggered some depersonalisation of sorts where I suddenly had no idea if anything was real.
I couldn’t understand why I needed to drive, I’ve never asked that before but the fact I didn’t question it unhinged me. 

Then I thought about the decisions I’d been making all day (thankfully they were not extreme, noticeable in a weird way I think) and it spiralled me into question if anything existed and I would jump through believing I was in some dream-state and then being confused at how easily I could switch realities. I’m usually so sure of myself.

Consequences didn’t exist and I thought I was in a dream, my doctor said luckily I didn’t do anything harmful in this scenario. 
When looking back on this event (ended about 4 hours ago) 
It 100% feels like someone I didn’t recognise. I couldn’t relate to anything in that 10 or so hour period that I thought or did.

My thought pattens, logic and rational were not only flawed and bizarre, but ENTIRELY uncharacteristic of me. My girlfriend was so confused, I knew she was confused and I couldn’t understand why. 

I actually resented her for caring about me in that moment. I don’t know why, I have never felt resent towards her and thinks have been perfect.

I never got violent or physical, I had some subconscious control that I wasn’t aware of.
I also decided apparently to open up multiple banks (kind of funny) for no reason.
I have never been a financially minded person or given a shit.

I am quite distressed and concerned about this response to the medication, it feels wrong and it feels like it should be reserved for extreme examples.
My personal GP still thinks I should continue, and I called a local helpline or suggested following her recommendation.

I wasn’t able to agree or understand, any suggestions or insight as to how I should go about making this decision? 
I imagine I’ll be more clear tomorrow. 
But for now I’d love to get some other opinions.

Thanks for reading, during typing this it helped me remember more things. Bizarre.