Tolerance develops swiftly to the consequences of LSD. After the 3rd or fourth consecutive days of having LSD, no amount of the drug can make the specified outcomes. On the other hand, soon after a brief period of abstinence (about 3 to four days), tolerance need to return to normal.2 https://socialislife.com/story3050801/how-long-does-lsd-stay-in-system-fundamentals-explained