Controlled Drugs Act Article 32
The books, receipts and special prescription forms for controlled drugs required by this Act shall be retained for 5 years.
中文原文 管制藥品管理條例第32條
本條例所規定之簿冊、單據及管制藥品專用處方箋，均應保存五年。
English translation for reference only; the Chinese text prevails. Not legal advice.