Hi Shelley, thanks for those links - most useful.
I received my blood work results today, and although the Gamma G.T. was down (106, - had been 161 and 183 over this past month) it is still extremely high. Previously - for the past three years - it had always been within range - 22,19 and 20 - average range is up to 36.
I phoned the endocrinologist, who thinks I may have had acute hepatitis, and she is also happy for me to stop taking the Fosamax.