An anonymous reader of my blog has provided a few more details on the composition of Akabutu’s Mouthwash:

For a 240 ml Bottle:

Glycerin
Cortef 10 mg (cortesone)
Ratio-Nystatin susp 100,00 U/ML (anti fungal)
PMS-Lidocaine viscous 2% 100ml
Lens Plus 360ml (saline solution) which contains salt 0.9%

Notes on preparing the solution.

I hope that is helpful to some of you. Please note, however, that I have no real idea of the validity of this recipe and that using it is at your own risk. I also must caution you that I also have no understanding of copyright/patent infringements that its use may cause.