Health Food Governing Act Article 29

If a vendor is guilty of violating any of Articles 7 and 10 to 14, the buyer may return the goods and claim refund of the purchase price from the vendor. If the vendor knowingly commits such violation, it shall refund twice the amount of the purchase price. If the buyer suffers any other damage, the court shall have the authority to order vendor to pay the buyer punitive damages not more than three times the retail price or the value of the damage, whichever is chosen by the buyer, unless the buyer is aware of such violation.Any manufacturer, importer or vendor who knowingly commits the above violation or is jointly liable with the vendor in negligence shall be held jointly and severally liable.
中文原文 健康食品管理法第29條
出賣人有違反本法第七條、第十條至第十四條之情事時,買受人得退貨,請求出賣人退還其價金;出賣人如係明知時,應加倍退還其價金;買受人如受有其他損害時,法院得因被害人之請求,依侵害情節命出賣人支付買受人零售價三倍以下或損害額三倍以下,由受害人擇一請求之懲罰性賠償金。
但買受人為明知時,不在此限。
製造、輸入、販賣之業者為明知或與出賣人有共同過失時,應負連帶責任。

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