Is Modafinil legal in Sri Lanka?

Also known as: provigil

Legal status

Not a dangerous drug under Sri Lanka's Poisons, Opium and Dangerous Drugs Ordinance (Chapter 218): absent from Groups A, B, C, D and E of the Third Schedule, and outside the Section 3 clause 12 structural test on its face. Modafinil is not named anywhere in the Third Schedule and is not a dangerous drug. This is the substance a stem search gets wrong: the only match in the whole schedule for any part of its chemistry is the word 「diphenylmethyl」, and that word sits inside Section 3 clause 12, which is the pipradrol analogue clause. The model: the list is inside the Ordinance and the power to change it is delegated, with a parliamentary lock on the delegation. Section 48 provides that 「the drugs, substances, articles or preparations, specified for the time being in Groups A, B, C, D and E in Part I of the Third Schedule, shall be deemed to be dangerous drugs」. Section 2(1) then provides that 「regulation」 means a regulation made under this Ordinance and published in the Gazette, 「and includes the First, Second, Third, Fourth, Fifth and Sixth Schedules」, so the Third Schedule is itself a regulation. The empowering section is section 80. Section 80(2)(b) lets the Minister make regulations 「for adding any item to or deleting any item from, or altering, varying or amending in any other way, any of the lists or Groups of poisons and dangerous drugs set out in the First and Third Schedules」, and section 80(3) then provides that 「No regulation so made shall have effect unless it has been approved by Parliament and notification of such approval has been published in the Gazette」. So the delegation is real but it is locked to an affirmative vote, and in practice the 2022 changes were made by primary legislation rather than by regulation. The Act was last amended by the Poisons, Opium and Dangerous Drugs (Amendment) Act, No. 7 of 2026, certified 6 March 2026. The Third Schedule was last amended by section 6 of the Poisons, Opium and Dangerous Drugs (Amendment) Act, No. 41 of 2022, certified 23 November 2022 and published as a supplement to Part II of the Gazette of 25 November 2022, which substituted Group B of Part I and the whole of Part III. Act No. 7 of 2026 does not touch the Third Schedule.

Consequences if caught

Capital exposure: none. Clause 12 reaches a substance 「structurally derived from piperidine, pyrrolidine, azepane, morpholine or pyridine by substitution at a ring carbon atom with a diphenylmethyl group」. Modafinil is 2-(benzhydrylsulfinyl)acetamide and has none of those five rings, so it is outside the clause on structure rather than merely unnamed. Reading the hit without reading the clause around it would have produced a scheduled classification for an unscheduled medicine. Neither reaches this substance, and not because the penalty is low but because no dangerous drug offence in this Ordinance engages at all. Section 48 makes a substance a dangerous drug only if it is specified in Groups A to E of Part I of the Third Schedule, and this substance is in none of them. Section 54A(1)(a) names four drugs for the manufacture limb and Part III Column II names five substances for the quantity limbs; this is neither, so no capital or life sentence is available for it on any facts. Saying that much does not dispose of the whole Ordinance, and the corpus this cell replaces never reached the rest of it. Chapter II runs a separate poisons regime over the First Schedule, whose Parts I to V were read in full for this cell, and this substance is named nowhere in them, so sections 5, 17, 18 and 19 create no offence for it either. The instrument that does govern it is named in the status above.

If prescribed or medical

Modafinil is supplied as a registered prescription medicine for narcolepsy and related disorders under the National Medicines Regulatory Authority Act, No. 5 of 2015.

Documentation

Carry a prescribed supply in its dispensed packaging with the prescription. Modafinil bought online without a prescription is an unregistered medicine question, not a dangerous drugs question.

Drug laws and enforcement change and vary within a country. This is not legal advice. Always confirm with Sri Lanka’s embassy or official drug authority before traveling; penalties can be severe, including imprisonment.