This is the 8123rd most frequent Japanese word.
専売
"Exclusive sale" or "monopoly."
The word '専売' here is used to denote the exclusive rights of a company to sell the medicine as a producer or distributor.
この薬は特定の会社によって専売されています。
This medicine is exclusively sold by a specific company.
In this context, '専売' refers to a system where only a government entity or authorized entity could sell certain goods, indicating exclusivity in sales due to regulatory control.
国が専売制度を廃止しました。
The government abolished the monopoly system.
Here, '専売' represents exclusivity related to intellectual property, where the holder can exclusively produce and sell items under the patent.