If you take too much LSD, you will know. It is different for everyone person, of course. After having tripped on and off for 30+ years, and having taken breaks from it for years in between due to life happening, the nature of the experience changes. I used to trip multiple times per week, often tripping consecutive nights, back to back, by doubling up. Problem with that is that I was already doing 3 or 4 times what other people were doing in terms of quantity, so I went through boat-loads of L over time. And of course, over the years, no matter how much time I take off (even took a break for almost 10 years), the "magic" of the early years no longer exists. I know...I have tried all I can to get a taste of it, but alas, while it may be something I get a lot out of, that magic is long gone. And as your life changes, you change, as do the nature of your experiences with LSD. So yes...you can get away with what you can get away with now, or for a while, but if you over-do it, and perhaps even if you don't, if you stick with LSD long enough, both you and your relationship with it will change as well. There is nothing that LSD can throw at me that I haven't had thrown at me before, and back in the day, my goal was to separate myself from consensus reality as much as I could, and man did I ever. There was a time when I barely felt human, and felt for more in touch with the psychedelic experience. It changed, and while I am glad it did, I do miss feeling like I left this place and went to another that felt a lot more magical and awe-inspiring. It is fine, though, because I was very lucky in terms of the things I did and the places I went.