In this Law, the following terms are construed as follows:

1. Narcotic substances are addictive substances, centripetalneurotropic substances, prescribed in the lists promulgated by the Government.

2. Additive substances are neurogenic or neurosuppressible substances easily causing addiction to users.

3. Centripetalneurotropic substances are those which stimulate or inhibit nerves or cause illusion, may cause addiction to users if they are used repeatedly for many times.

4. Pre-substances are chemicals indispensible in process of preparation and production of narcotics, specified in the lists promulgated by the Government.

5. Addictive medicines, centripetalneurotropic medicines are curative medicines prescribed in the lists promulgated by the Health Ministry, which contain substances prescribed in Clause 2 and Clause 3 of this Article.

6. Narcotic- bearing plants include opium poppy, coca, marijuana or other plants carrying narcotics, prescribed by the Government.

7. Drug prevention and fight means preventing, checking and fighting drug-related evils and controlling lawful activities related to drug.

8. Drug-related evils mean drug addiction, drug-related crimes and other illegal acts concerning drug.

9. Lawful drug-related activities include activities of researching, expertising, producing, transporting, preserving, storing, selling and buying, distributing, using, treating, exchanging, importing, exporting and/or transiting substances prescribed in Clauses 1, 4 and 5 of this Article, permitted by the competent State bodies under the provisions of law.

10. Control of drug-related lawful activities means permitting, monitoring, inspecting and supervising the activities prescribed in Clause 9 of this Article and preventing and checking the abuse of such activities for other purposes.

11. Drug addicts are persons who use narcotic substances, addictive medicines, centripetalneurotropic medicines and depend on such substances.

For further details, Please see a reference translation at   http://vbpl.vn/tw/Pages/vbpqen-toanvan.aspx?ItemID=50