LSD begins its life as a crystal, and from there is distributed in consumable form. In the 60s, “microdots” (tiny pills) and gelatin pills (window panes) were often distributed, along with blotter. Today, blotter paper is the main form in which acid is distributed, although liquid and gel tabs are sometimes encountered as well.
Regardless of the ultimate form it’s distributed, LSD is first dissolved in a solvent, typically either ethanol (Everclear) or a mix of ethanol and distilled water. It is then made into a paste with binding agents and put in a mold to create microdots, has gelatin added to it to make window pane (gel pills), added to blotter paper to make tabs, or sold in liquid form.