Unfortunately there are no rules when it comes to prescribing P meds. It's hit and miss as every PWP presents with different symptoms and reacts differently to all the various meds.available.
Our now retired GP told us that most GP's don't see enough PWP to even contemplate prescribing meds, OR to be experts on the condition ,and I agree with him. He said that he would go along with whatever our neurologist prescribed or suggested, and that is what we have done for 18 years. We trundled along with that in place for many years BUT things have changed recently.
It annoys me now when variations of meds, sent by letter from our neuro to the surgery, require the GP to ...............'review the meds', resulting in a delay in getting the prescription filled. I think that is a cost exercise and not any altruistic response by the GP, in any way. Perhaps the surgery is just trying to keep me, as a carer, fit, by making me trudge to the surgery or pharmacy every day for a week or more, which has happened frequently of late, to get what my OH requires
GP's, my OH never sees one so they are not au fait with his needs. Our neurologist IS!
A web resource would be rather like the faiiled NHS emergency number, IMO.