To improve the safety of non-prescription medications (NPM) usage and the legibility of their labeling for the general population, Taiwan Food and Drug Administration (TFDA) referred to the guideline of developed countries about the formats and wording of legible NPM package insert and formulated a regulation on March, 8, 2016. According to the regulation, the first stage targeted on those advertised on television and movies. Moreover, the modification should be done before the end of 2016. However, pharmaceutical companies started to report difficulties while making the alternation following the regulation. This study collected information of difficulties encountered by the companies and evaluate efficacy of counseling measures.