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Legality · Barbiturates

Are Barbiturates legal in Ireland?

Also known as: barbs

Confirmed against a primary sourceVerified October 3, 2026
Legal status
Controlled, and the answer runs member by member, because barbiturates are a class. Schedule 3 paragraph 1(b) of the Misuse of Drugs Regulations 2017 (S.I. No. 173 of 2017) places «any substance (not being quinalbarbitone) structurally derived from barbituric acid by disubstitution at the 5,5 positions, whether or not there is also substitution at the 1-position by a methyl substituent». Barbituric acid is 1,3-diazinane-2,4,6-trione, and each member below carries two substituents at position 5 in its chemical name as PubChem records it: barbital, 5,5-diethyl; phenobarbital, 5-ethyl-5-phenyl; amobarbital, 5-ethyl-5-(3-methylbutyl); pentobarbital, 5-ethyl-5-pentan-2-yl; butalbital, 5-(2-methylpropyl)-5-prop-2-enyl; butobarbital, 5-butyl-5-ethyl; and methylphenobarbital, 5-ethyl-1-methyl-5-phenyl, which the 1-methyl words of paragraph 1(b) keep in. Secobarbital, 5-pentan-2-yl-5-prop-2-enyl, is the member paragraph 1(b) excludes, because it sits higher: Schedule 2 paragraph 6 prints «Quinalbarbitone», and the Medicinal Products (Prescription and Control of Supply) Regulations 2003 (S.I. No. 540 of 2003) print «Secobarbital (Quinalbarbitone)», which ties the two names to one substance. Salts and preparations follow the member, under Schedule 3 paragraphs 3 and 4 and Schedule 2 paragraphs 8 and 9. One kind of preparation sits lower: Schedule 4 Part 2 paragraph 5, as substituted by the Misuse of Drugs (Amendment) Regulations 2022 (S.I. No. 210 of 2022), places «Any preparation containing not more than 100 milligrams of methylphenobarbitone or of phenobarbitone (calculated in either case in terms of base) per dosage unit and no other controlled drug», and, where the preparation is undivided, not more than 0.5 per cent of phenobarbitone, calculated as base. The Schedule to the Misuse of Drugs Act 1977 itself lists the same class at paragraph 1B(b), «Any substance structurally derived from barbituric acid by di-substitution at the 5-position, whether or not there is also substitution at the 1-position by a methyl substituent», and section 2 of the Act makes what that Schedule lists a controlled drug. The version read: Schedule 2 as amended by S.I. No. 282 of 2019 and S.I. No. 71 of 2024, neither of which touches its Quinalbarbitone entry; Schedule 3 as made in 2017; Schedule 4 as substituted in 2022; and S.I. No. 150 and 156 of 2023, 405 of 2025 and 9, 139 and 438 of 2026, which were read and amend none of these paragraphs. The paragraph numbers in this cell are read from the instruments themselves and are not printed in the quoted extract the dossier carries for this row.
Consequences if caught
Capital exposure: none. Ireland has no death penalty. Every member named in this cell is a controlled drug, so section 3 of the Misuse of Drugs Act 1977 prohibits possessing it, and section 27(1)(b) carries, on conviction on indictment, a fine or imprisonment for a term not exceeding seven years, or both. Possession for unlawful sale or supply under section 15 carries, on indictment, imprisonment for life or a lesser period under section 27(3). Section 15A reaches possession for sale or supply where the market value is €13,000 or more, and section 27(3C) then requires a minimum term of not less than 10 years for a first such offence by an adult, unless section 27(3D) applies. One exception changes the possession answer: the Misuse of Drugs (Exemption) Order 2017 (S.I. No. 175 of 2017) disapplies section 3(1) for «Any preparation containing not more than 100 milligrams of methylphenobarbitone or of phenobarbitone (calculated in either case in terms of base) per dosage unit and no other controlled drug», within the same limit of 0.5 per cent of phenobarbitone, calculated as base, for an undivided preparation, so possessing such a preparation is not an offence under section 3. Supplying it is still regulated. No quantity threshold is printed for any member; section 15A turns on market value, not weight.
If prescribed or medical
Regulation 10(2) of the Misuse of Drugs Regulations 2017 (S.I. No. 173 of 2017) lets a person possess a drug in Schedule 2 or 3 «for administration for medical, dental or veterinary purposes in accordance with the directions of a practitioner», unless the supply was obtained by not disclosing another prescriber or by a false declaration. Regulation 2 defines a practitioner as «a registered medical practitioner, a registered dentist, a registered veterinary practitioner» or, subject to regulation 3, a registered nurse or midwife, and the Act defines a registered medical practitioner as «a person registered in the register established under the Medical Practitioners Act, 1927», which section 108 of the Medical Practitioners Act 2007 reads as the current Irish register. So a barbiturate prescribed by a practitioner on an Irish register falls within that paragraph, and a prescription from a doctor registered only outside Ireland is not, on those definitions, the directions of a practitioner. A a phenobarbitone or methylphenobarbitone preparation within the Schedule 4 Part 2 limits needs no exemption, because possessing it is not prohibited at all. Regulation 10(6), inserted by S.I. No. 156 of 2023, lets a person resident in a state that is a party to the Convention Implementing the Schengen Agreement possess a drug in Schedule 2 or 3 «that is necessary for his or her medical treatment», provided that he or she produces, on request, a certificate issued or authenticated by the competent authority of the state of residence in accordance with Article 75 of that Convention.
Documentation
Regulation 5(2)(b) of the Misuse of Drugs Regulations 2017 (S.I. No. 173 of 2017) takes drugs in Part 2 of Schedule 4 and in Schedule 5 out of the import and export prohibition, so a phenobarbitone or methylphenobarbitone preparation within the Schedule 4 Part 2 limits is not caught by it. For every other member the prohibition in regulation 5(1)(c) applies unless the person holds a licence granted by the Minister under section 14 of the Act, which regulation 6 says authorises import and possession of the drug it relates to. For a resident of a Schengen state, the document the Regulations name is the Article 75 certificate that regulation 10(6) requires to be produced on request, and that regulation speaks to possession; the Regulations read here state no personal import allowance.
Primary sources
  • Misuse of Drugs Regulations 2017 (S.I. No. 173 of 2017), regulations 5 and 10, Schedule 2 paragraphs 6, 8 and 9, Schedule 3 paragraphs 1(b), 3 and 4
  • irishstatutebook.ie
  • Misuse of Drugs (Amendment) Regulations 2022 (S.I. No. 210 of 2022), Schedule 4 Part 2 paragraph 5
  • irishstatutebook.ie
  • Misuse of Drugs (Exemption) Order 2017 (S.I. No. 175 of 2017), Schedule Part 1 paragraph 2
  • irishstatutebook.ie
  • Misuse of Drugs (Amendment) (No. 2) Regulations 2023 (S.I. No. 156 of 2023), inserting regulation 10(6)
  • irishstatutebook.ie
  • S.I. No. 282 of 2019, S.I. No. 71 of 2024, S.I. No. 150 of 2023 and S.I. No. 405 of 2025, read for amendments
  • Medicinal Products (Prescription and Control of Supply) Regulations 2003 (S.I. No. 540 of 2003)
  • irishstatutebook.ie
  • Misuse of Drugs Act 1977, sections 2, 3, 15, 15A and 27 and Schedule paragraph 1B(b), as revised to 29 July 2026, in the copy fetched on 16 September 2026
  • revisedacts.lawreform.ie
  • S.I. No. 9, 139 and 438 of 2026, read for amendments
  • PubChem compound records 6211, 2294, 4763, 8271, 2164, 4737, 5193, 2481 and 6473
  • pubchem.ncbi.nlm.nih.gov
  • the instruments and PubChem records read 3 October 2026.

Court records

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Barbiturates in related jurisdictions

Other substances confirmed in Ireland

Same substance, other countries