Narcotics Hazard Prevention Act Article 23

Once a compulsory rehabilitation program pursuant to Article 20 Paragraph 2 is completed, the offender should be released immediately. The prosecutor should issue a non-prosecution order or the juvenile court (juvenile court of a district court) should enter a not-to-be-tried judgment.If an offender commits the offenses as stipulated in Article 10 within 3 years after being released from completing an observation, rehabilitation, or a compulsory rehabilitation program, the prosecutor or the juvenile court (juvenile court of a district court) should prosecute pursuant to the law or set the case for a trial.
中文原文 毒品危害防制條例第23條
依第二十條第二項強制戒治期滿,應即釋放,由檢察官為不起訴之處分或少年法院(地方法院少年法庭)為不付審理之裁定。
觀察、勒戒或強制戒治執行完畢釋放後,三年內再犯第十條之罪者,檢察官或少年法院(地方法院少年法庭)應依法追訴或裁定交付審理。

English translation for reference only; the Chinese text prevails. Not legal advice.