Lots of good heritage wrapped up in this.
The site was originally the Daniel Bernard brewery. Daniel Bernard fell out with his brothers T & J Bernard who ran the successful Edinburgh Brewery on Robertson Avenue (under where all the new houses at the top are). He set up on his own at the Wheatfield site but it didn't prosper and soon closed. The original malthouse is incorporated into the current pharmaceuticals site.
Macraflan Smith were formed from the merger of three Edinburgh pharmaceuticals companies; J. F. Macfarlan, T. & H. Smith and Duncan & Flockhart. They have a long combined pedigree, including producing sterile dressings for Joseph Lister, were involved in the development and supply of Chloroform to James Young Simpson, produced the poison Strichnine in a factory on Northfield Broadway, produced "Lettuce Opium", had a medicinal drugs farm in Warriston (Tesco used to be the site of the Blandfield Chemical Works), invented the first liquid essence of Coffee (see this wonderful Victorian advertising poster), developed the first injectable morphine and to top it all off, discovered the bitterest substance known to man (Denatonium) in 1958, which is used to make industrial alcohol, solvents and detergents unpalatable.
They grow poppies under licence in England for refining into opiates.