(1) If any person who has been convicted of the commission of, or attempt to commit, or abetment of, or criminal conspiracy to commit, any of the offences punishable under this Act is subsequently convicted of the commission of, or attempt to commit, or abetment of, or criminal conspiracy to commit, an offence punishable under this Act with the same amount of punishment he shall be punished for the second and every subsequent offence with rigorous imprisonment for a term which may extend to one-half of the maximum term of imprisonment, and also be liable to fine which shall extend to one-half of the maximum amount of fine .
Legal Commentary & Landmark Judgments: Section 31
Section 31 prescribes enhanced punishment for offences committed after previous conviction under the Act.
Section 31 provides enhanced custodial and capital sentencing options for repeat narcotics offenders, establishing maximum deterrence against persistent drug trafficking.
Section 31 removes all leniency for repeat offenders, multiplying both the prison term and monetary fines by 1.5 times the maximum sentence.