Radar, I can see where AC is coming from re sticking with the same GP for consistency of diagnosis/views/advice but here's something for you to ponder.
We are of similar age and I suspect have a similar collection of conditions to contend with and add to as we get older however, to assume a new or recurring issue is down to a particular medication may not be a good assumption to make. As our various "bits and pieces age" they will undoubtedly provide us with new symptoms that we may think are the same old same old and down to some or other medication and it's possible side effects.
I've already been down this road a couple of times and started playing around with my meds because I thought they were the cause and it turned out to be something else and in both cases it was down to a newly acquired condition.
Just something we should all consider before going off at a tangent and chasing the wrong rainbows like I have done on frequent occasions.
p.s. not advice, merely a suggestion.
p.p.s. Was on Tamsulosin for a decade and apart from developing "floppy Iris syndrome" which I still have, I didn't experience any unhelpful side effects.
My husband did ask for a different alpha blocker and the GP was a bit reluctant but did so anyway... A change to one of the others might solve the problem but you often have to research and ask directly for a similar but alternative alpha blocker.
Just a thought
Another aspect of this is that because people can react differently to drugs, GP's may work from the starting point that a specific drug is likely to work in most cases for people but if when taken it doesn't, or there is a strong adverse reaction, other possibilities have to be considered. As AC says, here it is helpful to have have continuity with one GP who knows the patient's history and can follow up in a more reasoned way. exploring other possibilities.
I have been on Tamsulosin for a couple of decades or so without side effects but am aware it can affect some adversely, a reaction which can be made worse if certain other drugs are also taken.
thanks everyone appreciate your replies,as for seeing the same gp everytime thats near impossible you have got to take the appointments that are available or you are waiting a long time to see the same gp.thanks.