I don't usually know what medication is for. Sometimes I can guess - I recognise many chemo drugs by name, for example - but in this case I have no idea
Had a bit of a think about this. 'mould' was once a generic term for topsoil - I wonder if the person is doing broad spectrum microbiota therapy. Like, rebuild your biome with topsoil to cure allergies, intolerances etc. like using hookworms to treat gluten allergy.