1B-LSD (1-butanoyl-lysergic acid diethylamide) is an LSD analogue which appears to be about as potent as 1P-LSD (slightly more potent than LSD) and has a slightly shorter duration than that of LSD, again thought to be about the same as 1P-LSD. Released in late 2018, and marketed agressively as a replacement for 1P-LSD. 1B-LSD does not yet have a clearly established safety profile,

A new psychedelic lysergamide which is suspected to be a prodrug of ETH-LAD, which could explain why the doses are very similar. Or it could be active on its own. Scientific studies would need to be written to understand, yet there are none.

An LSD analogue which appears to be slightly more potent with a shorter duration. Its effects are reported to be extremely similar to LSD, and thus far seems to be similarly safe. Released in late 2014, It has quickly become a highly popular research chemical due to its implicit legality, similarity to LSD and wide availability on the Internet.

AL-LAD is a hallucinogenic drug, lysergamide and an analogue of LSD. It is reported as having some subtle experiential differences to LSD (such as increased visuals), and also appears to be slightly shorter lasting. AL-LAD doses are similar to those of LSD, depending on purity. Its availability on the Internet since 2013 has lead to strong popularity among the drug community.

ALD-52, or N-acetyl-LSD is a less common chemical analogue of LSD, first synthesised by Albert Hoffman. It was famously implicated in the 'Orange Sunshine' trial. A psychedelic lysergamide, this compound exhibits similar properties to LSD, and is thought to be a pro-drug for LSD.

A psychedelic drug and slightly more potent analogue of LSD, first synthesised by Alexander Shulgin - sometimes described as being less 'abrasive' than LSD. Less common than the associated AL-LAD, though has seen some popularity since its release on the Internet research chemical scene in 2015.

A chemical found in Morning Glory and Hawaiian Baby Woodrose seeds, which are often legally available. Has mental effects similar to LSD, although with almost no visual effects. It is famous for being very nauseating, and for causing excessive time dilation at higher doses.

LSD is a popular psychedelic with a relatively long history of use and research, and as such is known to be relatively safe despite its extremely high potency. It is the archetypical psychedelic to which all others are compared, and remains in popular usage.

Psychedelic of the lysergamide class, less potent by weight and produces a rather mild, dreamy and even sedating trip compared to its bigger brother LSD.

A lysergamide very similar to LSD usually distinguishable only by its shorter duration, though some subjective reports have noted it may be slightly more introspective and slightly less confusing.

A very rare lysergamide that is slightly less potent than LSD, yet with a shorter duration of action.