Siberian ginseng takes about 3 weeks to see results. It is not nearly as desirable as it used to be due to the way it is being cultivated these days. Due to the toxic farming methods, the healing potentcy of the herb is a lot weaker than it used to be.
I would think that licorice would be first choice as it is very specific for supporting and nourishing the adrenal glands. The drawbacks to using licorice are: 1)it can raise blood pressure in some people, so if you already have high blood pressure it is not a good choice; 2) I have seen it raise blood Sugar levels in a few diabetics; 3) it is estrogenic so if you are male, you do not want to use it long term.
I am not familiar enough with Ashwagandha Root to comment on it.