Pharmaceutical Supply Chain and Consumer Behavior

True or false: 很多常见的感冒和发烧药物正在飞快售罄？

True or false: 一家医药网络公司的采购代理称，他们通常从大型制药公司获取药品？

True or false: 某些制药公司设定了一条“铁律”，说明应对疾病爆发生产的产品不能被退回？

A pharmacy in Shanghai told customers that all of their common cold and fever medications had been sold out.
Some of the common cold and fever medications that are currently in stock are increasing in sales.
The pharmacy explained that they generally get their supplies from large pharmaceutical companies, and that starting on December 9th, many products were in stock but now many products are unavailable to purchase.
A purchasing agent from a medical internet company told reporters that they generally get supplies from larger pharmaceutical companies, and that the availability of cold and fever medications has been affected significantly by consumer stockpiling.
There is regional allocation of products, and during the winter season, when cold and fever medications are popular for purchase, the distribution of products has an impact on consumers' perceptions.
Some pharmaceutical companies have set a "iron law" that states products that are produced in response to an outbreak of the disease cannot be returned.

Explore how consumer stockpiling and regional allocation impact the availability of cold and fever medications in pharmacies. Delve into the challenges faced by pharmaceutical companies and the measures taken to regulate product returns during disease outbreaks.