The three-storey building has an art deco façade. The pharmacy can be accessed by both the Compestela and the Brasil streets.  The name Sarrá was engraved on the floor of one of the entrances.

The interior is designed by the French fashion that dominated Havana in the last quarter of the 19th century. All of the walls of the interior are covered by hundreds of porcellain apothecary jars resting on carved shelves made of precious wood. These are the reproductions of the original jars that would once have contained the medicinal mixtures of all kind sold here. The excellent carpentry work with neo Gothic style has also somewhat Moorish influence. During the restoration great care was taken in the reproduction of the deteriorated wood or in the replacement of the pieces of the carpentry that did not exist anymore. The porcellain jars bear the emblem of La Réunion. The luminaires at the extravagantly adorned ceiling illuminate the rooms and the marble floor with their soft tone bulbs. They were commissioned to Italy to produce the copy of the originals during the restoration.

The room at the corner of the building was the place where the apotheracy was staying. It is decorated with mirrors ornamented with colored flower figures that are in excellent harmony with the red colored transparent jars. The instruments used by the apothecary like the scales, weights and a microscope, are exhibited in the showcases. In this area the visitor can see the medicines and the natural products of the old pharmacy that are still sold, such as Scout Emulsion and Spirulina.  Scout Emulsion contains cod liver oil with vitamin A and D, and used in children to increase their resistance to infections like coughs and colds and to develop stronger bones and teeth. Spirulina is a tiny, multicellular photosynthetic alga, bluish-green in color. It is extremely high in many nutrients like protein, copper, iron and vitamin B, has powerful antioxidant and antiinflammatory properties, and can lower the cholesterol level. The Aztec messengers that needed great energy and resistance that would allow them to run for days, were consuming spirulina cakes. Likewise, Javier Sotomayor Sanabria, the Cuban athlete specialized in high jump and the current world record holder with his jump of 2.45 meters, and Lee Evans, the Olympic champion runner, owner of the two gold medals and holder of four world records, recognized the consumption of spirulina as a nutritional supplement.

The central room of the pharmacy stands out with the excellent stained glass decoration that creates a nice ambience in the dim light of the room. They are the work of the artist Rosa María de la Terga, and exhibit an interesting mixture of neo-Gothic and modernism. The glass doors of the main bookcase at the back of this place are imitated in an almost exact way using the old photos during the restoration. This room is dedicated to panels with texts on which the benefits of some drugs, produced in the laboratory of the pharmacy, are explained in the style of a publicity poster. The bottles in which these medicines and natural products are sold, as well as the containers, flasks, mortars and the instruments like pildoreros (used in the production of pills), scales and microscope, that were used in their production process are exhibited in front of the panels. There are also water filters and an old autoclave to sterilize the instruments of the production process of the pharmaceuticals. Most of these bottles and tools, related to the art of curing like surgical and dental instruments, were extracted from archaeological excavations, carried out in the historic center of Havana. There are also posters on which the surgical instruments of a French company, used in opthalmology, otorhinolaryngolgy and general surgery are presented. The panels that reflect the advertisements of the time, show us some hints about the running of the business at that time, providing us the opportunity to make an analysis of the social life in Havana in the colonial time.

On the desk, there are some books in that the formulas of several medicines and natural products were recorded. They are of great value to understand the development of the pharmaceutics in Cuba. The visitor can receive information about the history of pharmacy in Cuba by reading the chronology on the text on the column in the center of the museum..

The last room, where formerly spices and medicinal plants were also sold, is dedicated to the sale of only natural and traditional pharmaceuticals today. The visitor can observe the process of preparing the drugs according to the formula in the laboratory.

On the tour of the museum the visitor can alternatively see the products for sale and the pieces of high collection value and some archeological items. It should be not forgotten that such pharmacies in the island played an important role, when Cuba had difficulties in the supply of active ingredients of traditional medicine due to the economic, financial and commercial embargo imposed by the United States.