[Oireachtas] Seanad Éireann debate - An tOrd Gnó - Order of Business [Synthetic cannabinoids]. (29 Apr 2026)

Mongan, Deirdre (2026) New psychoactive substances identified in Ireland 2021–2025. Drugnet Ireland , Issue 94, April 2026 , pp. 1-4.

Ireland. Department of Health. (2025) HHC (Hexahydrocannabinol). Dublin: Department of Health.

[Oireachtas] Dáil Éireann debate. Question 2728 – Misuse of drugs [HHC] [41719/25]. (29 Jul 2025)

[Oireachtas] Dáil Éireann debate. Question 2716 – Legislative measures [HHC] [41666/25]. (29 Jul 2025)

[Oireachtas] Dáil Éireann debate. Question 2678 – Medicinal products [HHC] [41325/25]. (29 Jul 2025)

Ireland. Department of Health. [Department of Health] Ministers for Health announce that HHC is now classified as an illegal drug. (29 Jul 2025)

O'Mahony, Brian and Lanigan, Sarah and Lally, Níall and O'Malley, Andrew and Smyth, Bobby and McDonald, Colm and Hallahan, Brian (2025) Novel substance, same old problems: admissions of psychosis precipitated by hexahydrocannabinol, a widely available semi-synthetic cannabinoid. BJPsych Bulletin , pp. 1-6.

[Oireachtas] Dáil Éireann debate. Question 336 – Healthcare policy [Vapes, pouches, HHC] [38401/25]. (10 Jul 2025)

[Oireachtas] Dáil Éireann debate. Question 859 – Misuse of drugs [HHC] [37721/25]. (08 Jul 2025)

[RTE News] , Kenny, Aisling 169 young people sought treatment for HHC drug in last 18 months - Health Research Board. (30 Jun 2025)

[Oireachtas] Dáil Éireann debate. Question 1585, 1614, 1615 – Healthcare policy [HHC] [30333/25, 30523/25, 30524/25]. (10 Jun 2025)

[Oireachtas] Dáil Éireann Debate. Question 584 – Tobacco control measures [HHC vapes] [26759/25]. (27 May 2025)

[Irish Examiner] , Murphy, Ann HHC: The drug sold on Irish main streets that’s sending teens to hospital. (17 May 2025)

[Oireachtas] Dáil Éireann debate. Question 203 - Health promotion [HHC products] [24020/25]. (13 May 2025)

[Oireachtas] Seanad Éireann debate. Vol. 305 No. 10 An tOrd Gnó - Order of Business [HHC products]. (07 May 2025)

[Irish Examiner] , Murphy, Ann 'Wild West of the drug market': calls for laws to deal with synthetic cannabinoids. (10 Mar 2025)

Millar, Seán (2025) Psychotic illness triggered by widely available semi-synthetic cannabinoid. Drugnet Ireland , Issue 90, Winter 2025 , p. 15.

Mongan, Deirdre and Killeen, Nicki and Millar, Seán R and Matias, Joao and Keenan, Eamon and Galvin, Brian (2025) Hexahydrocannabinol (HHC) use and harms in Ireland: new findings from the 2024 European Web Survey on Drugs. International Journal of Drug Policy , 145 .

[Irish Examiner] , Dunphy, Liz Vapes with cannabinoids causing psychosis in users as young as 13. (25 Nov 2024)

College of Psychiatrists of Ireland. (2024) HHC and your mental health: information about Hexahydrocannabinol (HHC) and how it might affect your mental health. Dublin: College of Psychiatrists of Ireland.

[Oireachtas] Dáil Éireann debate. Question 664 – Substance misuse [HHC] [17930/24]. (23 Apr 2024)

[Oireachtas] Dáil Éireann debate. Question 270 – Substance misuse [HHC hexahydrocannabinol]. (22 Feb 2024)

[Oireachtas] Dáil Éireann debate, Topical issue debate – Departmental regulations [Synthetic cannabinoid HHC]. (20 Feb 2024)

[Oireachtas] Dáil Éireann debate. Question 1499 – Misuse of drugs [cannabinoids] [56526/23]. (17 Jan 2024)

Jordan, Deborah (2024) HHC/vaping: what is it? Wicklow: East Coast Regional Drug and Alcohol Task Force.

O'Mahony, Brian and O'Malley, Andrew and Kerrigan, Olan and McDonald, Colm (2024) HHC-induced psychosis: a case series of psychotic illness triggered by a widely available semisynthetic cannabinoid. Irish Journal of Psychological Medicine , 41 , (3) , pp. 405-408.

[Oireachtas] Dáil Éireann debate. Questions 236 - Health Service Executive [Cannabinoids in vapes] [34427/23]. (12 Jul 2023)

[Oireachtas] Dáil Éireann debate. Questions 456, 620, 621, 622 - Substance misuse [Cannabinoid vaping] [30556/23, 30553/23, 30554/23, 30555/23]. (27 Jun 2023)

European Monitoring Centre for Drugs and Drug Addiction. Ujváry, István and Evans-Brown, Michael and Gallegos, Ana and Planchuelo, Gregorio and de Morais, Joanna and Christie, Rachel and Jorge, Rita and Sedefov, Roumen (2023) Hexahydrocannabinol (HHC) and related substances. Technical report. Luxembourg: Office for Official Publications of the European Communities.

[EMCDDA] EMCDDA technical expert meeting on hexahydrocannabinol (HHC) and related cannabinoids. (19 Dec 2022)