Does being on heavy duty prescription painkillers (think cocodamol, gabapentin and diclofenac) for a number of months make you immune to over the counter pain medication? I.e paracetamol or ibuprofen?
The last few times I have had a headache I've not been able to shift it with the normal stuff...is that because I've messed up my system by being on the stronger ones for so long? Or does it not work like that?