I too experienced the increased vivid dream state, as is commonly reported. However, now that I think of it, I don't seem to notice it as much. Maybe I'm just accustomed to it now.
It is a fairly well known experience in spiritual matters that if you use a chemical enhancement, your brain opens up a pathway. Once opened, you have to encourage it to stay open, by non-chemical means. I would recommend that you meditate on the feeling and try and experience it again. A genius whose books are now heavily suppressed, said "one of the biggest secrets of the occult is that in order to achieve the "impossible", you have to keep trying to get there by believing nothing is impossible, and after diligent practice, the universe will grant you your desire". The author was referring to achieving bodily levitation.
For those of a Christian background, the secret is in Mark 11, v22-24: [the NIV version has the clearest English] “Have faith in God,” Jesus answered. "Truly I tell you, if anyone says to this mountain, ‘Go, throw yourself into the sea,’ and does not doubt in their heart but believes that what they say will happen, it will be done for them. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." It states that you achieve miracles by operating from the heart, via emotion, and by believing that you have already achieved your desire. This opens the pathway which was previously closed, and the concept of "impossibility" does not exist in that realm. Note that 'wish' is not strong enough, the heart must truly desire.
Sorry for the thread diversion.