Mont. Code Ann. § 37-7-322

It is unlawful for a person to carry on, conduct, or transact a retail business under a name which contains as a part of the business the words "pharmacy", "apothecary", "drug store", or "chemist shop" or any abbreviation, translation, extension, or variation of those terms or in any manner by advertisement circular or poster, sign, or otherwise to describe or refer to the place of business conducted by that person by the term, abbreviation, translation, extension, or variation unless the business conducted is a pharmacy within the meaning of this chapter and licensed and in the charge of a licensed pharmacist.