I've done diphenhydramine 3 times. Once was 350-400 mg, the other was 500 mg, and then I did 600 once. I had conversations inside my mind with my friends who I thought were in the next room, but when I actually opened my mouth and spoke I realized how loud by true voice was and realized it was a hallucination. The first noticeable hallucination was when I was typing in canna chat, looked up at the wall and it pulsed. I don't know if I made logs with those trips, but they were very memorable and mind-expanding.