Suggest Remedy For Severe Pain And Soreness In Throat

Good Morning...
I would be much obliged...
Please, may I ask... I was most recently diagnosed with very severe infectious mono with acute viral hepatitis ... with very severe throat .. very enlarged tonsils ... high dose prednisone was prescribed ...i'm to gather antibiotics are inaffective for this type of tonsil enlargement/infection?
an oral "Magic Mouthwash" was also prescribed .... aside from this other then rest and liquids so on so forth...
For ultra severe pain for throat can anything other than lidocaine be added to "Magic Mouthmash" such as morphine, etc ... or perhaps, even an induced several week coma ..lol ....
Graciosly, I thank you so very much ...
DB