Hi.  I've been taking Forteo, too, for almost 18 months and the hair loss started probably a week or two after I started taking it.  Just like yours, it's not coming out in clumps, but really noticeable when I wash my hair, and I've probably lost at least a third of my hair also.  It seems to have stabilized at one-third, but who knows what the next few months will bring?  I'm supposed to take it until March, so we'll see what happens after that when I'm supposed to stop.

Hope this helps.

Best regards,

Barbara

I am on the final countdown days of finishing Forteo and most definitely I have lost a considerable amount of hair.  It started this last year to be very noticeable, even my hairdresser is shocked.  I have always had very thick hair but no longer.  I do have new hair growth at the crown, which is sticking up now, as well as new growth at my forehead, which I can cover with a fringe.  It appears that handfuls come out in the shower and I always have carpet of hair on my bathroom floor, something that never happened before.  I will be finished Forteo in 2 weeks and am praying and hoping that my hair returns.  Most importantly though will be if I have a good bone density result.