Tolerance develops swiftly to the results of LSD. Following the third or fourth consecutive days of using LSD, no level of the drug can create the desired consequences. Nevertheless, immediately after a short period of abstinence (about a few to four times), tolerance must return to usual.two NIDA points out https://www.tumblr.com/lsdvibes/757469871163490305/lsd-guide-understanding-the-market-risks-and?source=share