1B-LSD

1B-LSD is a synthetic psychedelic of the lysergamide class and an acylated derivative of LSD. It first appeared on the research chemical market in 2018 and functions as a prodrug for LSD, producing a near-identical effect profile upon metabolism. Structurally distinguished by a butanoyl group bound to the nitrogen of LSD's indole system, 1B-LSD is roughly one-seventh the potency of LSD by weight.

Also known as: 1b, 1-butyryl-lsd, 1-Bu-LSD, N1‑butanoyl‑LSD, 1-butyr-LSD

Classification

Chemical: Lysergamide
Psychoactive: Psychedelic
Tag: Research-Chemical
Tag: Tentative

Effects

Spontaneous Tactile Sensations
Stimulation
Nausea
Vasoconstriction
Difficulty Urinating
Spontaneous Bodily Sensations
Time Distortion
Introspection
Dejavu
Multiple Thought Streams
Conceptual Thinking
Ego Suppression Loss And Death
Hallucinations
Visual Drifting
Tracers
After Images
Color Shifting
Scenery Slicing

Routes of Administration

Oral

Dosage

Heavy: 300 ug+
Light: 15 – 50 µg
Common: 50 – 125 µg
Strong: 125 – 250 µg
Threshold: 15-25 ug

Duration

Onset: 0.3-1.5 h
Comeup: 0.75-2 h
Peak: 3-5 h
Offset: 5-10 h
After Effects: 10-24 h
Total Duration: 8-12 h

Sublingual

Dosage

Heavy: 280 ug+
Light: 25-70 ug
Common: 70-140 ug
Strong: 140-280 ug
Threshold: 15-25 ug

Duration

Onset: 0.3-1.5 h
Peak: 3-5 h
Offset: 5-10 h
After Effects: 10-24 h
Total Duration: 8-12 h

Harm Reduction

Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.

Sources

Substance data is aggregated from the following public harm-reduction and reference sources.

Links

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