About 2 weeks ago me and a group of friends dropped acid, with all but me being first timers. We were having such a good time on the first peak and it's rare that i'd get the chance to be in this kind of gathering so I suggested we take more and go for another peak. On the next one my friend went into a seriously bad trip and couldn't string words together for a few hours. He kept asking me if it's possible to take "too much" but I kept reassuring him that they only had smaller doses (110ug both peaks). Flash forward 2 weeks from then, my friend has been struggling with ridiculous general anxiety and panic attacks. He doesn't show any trigger signs and isn't hallucinating anymore but he describes it as constantly being in fight or flight mode. Both me and him and under a lot of stress now aswell due to exams and whatnot coming up so I think the stress is also amplifying everything he's feeling. Like me he's got a lot of work to do for uni and despite us leaving it till we had a week of holidays so that we had enough time to recover, it's affected him for way longer. I'm so scared that he's gotten permanent psychosis or something because it seems to be so severe and it's not getting any better. This whole situation has also made me feel extremely guilty as I was the one that suggested we should try it together, so any damage to him is my fault. I feel anxious during the day and really struggle to focus at the moment because of it. This guy has had slight anxiousness in the past but nothing on this kind of scale. I don't know how to help him and I don't know how to shake this feeling of guilt despite me warning them all many times that they should research it themselves and that i'm not pressuring them to try it. Has anyone had a similar experience and have recovered from it? How do I tell if this is damage done by the LSD or if it's symptoms of general anxiety from the trauma of the trip and all the stress of uni?