There are some approaches to use LSD. The most common way is in the shape of a blotter tab. These are typically very small parts of paper that were infused with LSD. A further possible extended-time period outcome of LSD is really a problem named hallucinogen persisting notion problem (HPPD). https://medium.com/@LsdWorld/introduction-to-lsd-what-you-need-to-know-e70ffecb3a92