5 years ago when my DH was 61 he started getting pains in his leg and back, he went to his GP who told him he must have strained something and that it would ease in time, it didn't so he went back, again he was told (by the same GP) that it would ease, by the time he went back for the 3rd time he could only walk with the aid of two sticks, his work was suffering, his social life (and mine) was non existent and he was in terrible pain.
This time I went with him and again saw the same GP this time I demanded further investigation, the GP was bloody rude, more on less implied that I was a fussy demanding cow and that there was no underlying reason why DH was crippled and to be patient.
At this consultation he also gave DH a repeat prescription for Statins, a drug DH had been on for 6 months, when DH took his first one he left the leaflet that came with the pack on the table and I was curious and read it.
On the list of side effects was muscle wastage/damage, so I googled Statins my research led me to several sites explaining the side effects plus several discussion boards both here and in the US, where people described exactly the same problems as DH suffered.
Now sorry but I would expect a GP who prescribes a drug with certain (and well known) side effects to investigate further when a patient presents with a condition that may well be caused by those side effects.
DH came straight off Statins and with 2 weeks could walk normally with out sticks and without any pain.
Last year the same GP realised DH wasn't taking Statins and on hearing why, prescribed him with a different brand, within a week the leg pains came back.
That's why I would never take any medication with out checking possible side effects.