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James M Coulson

2 papers in the library · 2 citations · publishing 2014-2025

Papers

A case series of ibogaine toxicity reported to the United Kingdom National Poisons Information Service (NPIS) over a 10-year period.

Clinical toxicology (Philadelphia, Pa.) March 1, 2025 Ella P Edwards, Laurence A Gray, Muhammad E M O Elamin et al. 2 citations

Ibogaine, a psychoactive alkaloid from the West African shrub Tabernanthe iboga, is not licensed in the UK but is used by individuals to self-treat drug or alcohol use. A retrospective analysis of telephone enquiries to the UK National Poisons Information Service from 2012 to 2022 identified eleven enquiries about seven patients, all symptomatic and using ibogaine recreationally. Doses ranged from 5g to 34g. Seven patients had neurological symptoms and six had cardiotoxicity, including cardiac arrest, hypoxia, torsade de pointes, and QT prolongation. The findings indicate that ibogaine can cause severe cardiotoxicity and neurological harm, especially when used in variable, unregulated doses.

Methoxetamine toxicity reported to the National Poisons Information Service: clinical characteristics and patterns of enquiries (including the period of the introduction of the UK's first Temporary Class Drug Order).

Emergency medicine journal : EMJ January 1, 2014 Simon L Hill, Siân C D Harbon, James M Coulson et al.

Between April 2010 and August 2012, the UK National Poisons Information Service received 47 telephone enquiries and 298 online database sessions about methoxetamine, a dissociative drug. After the UK placed methoxetamine under a Temporary Class Drug Order in April 2012, online sessions fell by 79% (from 151 to 32) and telephone enquiries by 80% (from 15 to 3). Clinical features reported included stimulant effects (36%), reduced consciousness (17%), dissociative effects (11%), cerebellar signs (6.4%), and acute mental health disturbances (43%). The pattern suggests reduced presentations to healthcare services, though whether the legal order caused the decline is unclear.