I have recently been diagnosed as having Trigeminal Neuralgia, and have been prescribed Carbamazepine 100mg x 2 a day which is the starting dose. It is the only drug which GPs can prescribe for this awful condition. The trouble with it is that it interacts (by making them weaker) with corticosteroids, which I have in my asthma inhalers, and with both DOACs and Warfarin, by reducing their effect. I do not understand the mechanisms involved. When I told a different GP in the medical practice he told me to take my normal dose. I have my own Coaguchek meter and two days ago it showed my INR to have dropped to 1.5. It seems logical to increase my Warfarin dose, but as I cannot get hold of any GP until after Easter, I probably shouldn't.
The drug for Trigeminal Neuralgia which doesn't interact with anticoagulants, but which can only, in the first place, be prescribed by a specialist, Lamotrigine, has awful side effects, although of course anyone using the drug may not get side effects.
Has any other AF person, (mine is now permanent and asymptomatic), had trigeminal neuralgia, and if so, what experience have you had of it?