Blue Cheese has been the most medicinal strain I've come across. The Romulan I have coming up next may change my opinion on that - was one of the OG medicinal strains in BC.
This might sound strange but when I got sick a few weeks ago any other strain was irritating my throat/lungs. The Blue Cheese made everything feel better - nausea, throat, lungs etc. It has now become my daily driver out of all of my strains when it used to collect dust