One thing to understand is that erectile dysfunction
and pre mature ejaculation is two different things and there management can be different.
There are many causes for erectile dysfunction and proper investigation to know the exact cause what is causing this is problem. There are many causes from some drug intake, neurological problem, psychological problem, vascular problem or some type of surgery which can lead to this problem. The medication which you are taking can also lead to this problem as one of the side effect of this medication is in the form of sexual dysfunction
Another problem of pre mature ejaculation can be treated by some practical exercises and medication for that.
I would suggest you to consult some sexologist
regarding this problems rather than going for the Ayureveda and after proper history and examination and investigation, management can be done.
Thanks and take care