Library
1SB-LSD
1SB-LSD, or 1BS-LSD, also known as 1-TMSBz-LSD or as 1-(4- benzoyl)-LSD, is a psychedelic drug of the lysergamide family related to lysergic acid diethylamide (LSD). It is thought to be a prodrug of LSD. The drug was encountered online as a novel designer drug in September 2025. 1SB-LSD has been sold in the form of blotter, for instance containing 165 μg per tab. It is the derivative of 1Bz-LSD (SYN-L-018) in which there is a 4-trimethylsilyl group on the benzyl ring. 1SB-LSD was first described in the scientific literature by 2026. It is not an explicitly controlled substance in the United States or in Canada.
Also known as: 1BS-LSD, 1-TMSBz-LSD, 1-(4-(trimethylsilyl)benzoyl)-LSD
Classification
- Chemical: Lysergamide
- Psychoactive: Psychedelic
Effects
- Dilated Pupils
- Stimulation
- Nausea
- Pupil Dilation
- Spontaneous Tactile Sensations
- Introspection
- Euphoria
- Time Distortion
- Conceptual Thinking
- Analysis Enhancement
- Memory Suppression
- Visual Distortion
- Color Enhancement
- Drifting
- Tracers
- Pattern Recognition Enhancement
Routes of Administration
No route information available yet.
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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