While AL-LAD has subtly different effects than LSD, and appears to be slightly shorter lasting, their potencies are similar; an active dose of AL-LAD is reported to be between 80 and 160 micrograms. AL-LAD has a known but short and highly uncommon history of recreational human use, which originated in Ireland and the UK, but spread internationally.
Chemistry
AL-LAD does not cause a color change with the Marquis, Mecke or Mandelin reagents, but does cause the Ehrlich's reagent to turn purple because of the presence of the indole moiety in its structure.