Soon after they settled in Kőszeg, the Jesuit order received permission to open an apothecary, which was originally located in a room to the left of the friary’s entrance. Following the dissolution of the order, both the operating rights and the furniture of the workshop was bought by Matthias Svalla in 1777, a Bohemian apothecarist, who had the pharmacy and its furniture moved to its current place at 11 Jurisics Square. The pharmacy operated until 1910, first referred to as Golden Unicorn, then as Hungarian King.

According to Historia Domus, the furniture of the workshop was prepared by Jesuit joiners and woodcarvers: József Huntersinger (Undersinger) (from 1735), Kuneldt V. (1741), József Steidner (1742-44) and József Codelli (1744) between 1735 and 1744. The furniture fully covers the walls; it has four doors positioned on the axis of the two median lines of the ground plan. On each side of the main door, that once served as the entrance to the laboratory, stands a Saracen figure holding a tray over his head. At each end of the traverse axis the doors are framed to match the design of the furniture; and there are paintings with ornate frames above them. The main body of the furniture is made of oak; the carvings, shelf ledges and veneers are of walnut; the gilded figures of linden wood.

The pictures hanging above the furniture were donated to the Jesuits by a painter called Ettl.
One is a depiction of Madonna with baby Jesus, the other shows the patron saints of physicians and pharmacists, St Kosmas and St Damian. The fresco secco on the ceiling was made in 1777 before the furniture was put in place upon the completion of the apothecary.