 Maine does not have any documented regulation pertaining to the purchase of dextromethorphan available at this time.Maryland Senate Bill 939 states that a person is prohibited to purchase a dextromethorphan containing product unless the potential purchaser provides government issued photographic identification proving age of at least 18 years and signs a receipt documenting the date and time of the transaction, the name and address of the purchaser, and the amount of product purchased.Each establishment that provides dextromethorphan containing products is required to maintain records of purchase and post signs describing the restriction of dextromethorphan and the health reasons behind the restriction.