Tolerance develops quickly to the effects of LSD. After the third or fourth consecutive times of using LSD, no number of the drug can create the specified outcomes. Having said that, soon after a short duration of abstinence (about a few to four days), tolerance need to return to standard.2 https://www.tumblr.com/lsdvibes/757469871163490305/lsd-guide-understanding-the-market-risks-and?source=share