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Psychedex

Histamine system

1 substance · 1 subclass · Armodafinil

Sub-classes

Histamine H1 receptor antagonistCompounds that block histamine H1 receptors. First-generation antihistamines cross the blood-brain barrier, producing sedation and at high doses, deliriant effects. Includes diphenhydramine, promethazine, and doxylamine.

Members

–ArmodafinilBenzhydryl

Provenance not recorded · not yet verified by a human reviewer

Harm-reduction reference — not medical advice.

Last updated Mar 18, 2026Report an issue