Tolerance develops rapidly to the effects of LSD. After the third or fourth consecutive days of using LSD, no volume of the drug can deliver the desired results. Having said that, right after a brief duration of abstinence (about a few to 4 days), tolerance need to return to standard.2 https://www.tumblr.com/lsdvibes/757469871163490305/lsd-guide-understanding-the-market-risks-and?source=share