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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,
Dosage
Oral
Common: 50-125ug
Light: 25-50ug
Strong: 125-250ug
NOTE: At the time of this chemical's release, the manufacturers claimed 1B-LSD was expected to be slightly less potent than 1P-LSD, supposedly owing to the increased mass of the butanoyl group over the propionyl group, however anecdotes seem to indicate approximate equipotency to 1P-LSD.
Duration
Onset: 45-90 minutes
Duration: 8-12 hours
After effects: 6-24 hours
Timeline
Onset
45-90 minutes
Peak
8-12 hours
After
6-24 hours
018.8h1.6d
Typical
Extended range
External Links
Community Notes
AAAA
HoppingWolf934•12/28/2025
Chemical structure © Wikimedia Commons