Tongue numbness post chicken pox

A 79 yrs old lady with history of chicken pox on her right neck, face to the nose site.
She feel very sharp pain on her ear and numbness of her tongue.

Patient was on Inj B12 weekly for one month, Lyrica on nights and tablet B12 daily; this slightly showed improvement.

I added low dose Antiviral drops at 20-0-20 dose, low dose Epstein barr nosode 10 drops daily.

Spoke to Dr Tariq; he advised to add in low dose Glutathione+Na EDTA+ Ca EDTA at dose of 20-0-20
Now pateint is completely free of the tongue numbness, she also can feel the taste of the food.