1B-LSD in Europe — Legal Status

1B-LSD (1-butanoyl-LSD) is part of a group called LSD analogues or “lysergamides.” These are chemically modified versions of LSD created mainly to bypass older drug laws — but their legality across Europe is complex and constantly changing.

Here’s the clear, factual overview.

 What Is 1B-LSD?

• A lysergamide compound structurally related to LSD-25
• Often described as a prodrug, meaning the body may convert it into LSD after ingestion (similar to other analogues like 1P-LSD or 1cP-LSD)
• Typically sold historically as a “research chemical for sale”

These substances emerged because traditional LSD has been illegal across Europe for decades.

 Is 1B-LSD Legal in Europe?

👉 There is NO single EU-wide law.
Each country regulates psychoactive substances independently.

General European Situation (2026)

• Classic LSD is illegal across almost all European countries.
• Many countries now apply analogue laws or blanket bans that also cover LSD derivatives.
• Governments frequently update laws to include new variants individually rather than banning all at once.

Because of this, legality changes frequently.