Welcome to HCM,
Your history of dog bite 5 years back, and you was not vaccinated for rabies
, you observed the dog and he was not suffering from rabies.
You are lucky as the was not having rabies,I really do not know how much this folk medicine
work but you should not believe in such things.I fact they do not work at all.
In your case the dog bite was not rabies hence you did not have any disease and after so many years chances of rabies are nil.
I do not think now you need rabies vaccination
but in future you should be careful and if you have any suspicious bite or scratch there must be post exposure vaccination.
Please do not worry there is no charge for this advice,
just take good care of yourself.