On Forteo, I initially (first week) had a few side effects like a racing heart feeling, lightheadedness, but believed those would lessen with time.  They did lessen for the most part.  I had no problem giving myself the injection (surprising).  I noticed waking up several times in the night but ignored it and usually could go back to sleep. Then my husband and I took a week's vacation and I was AWAKE (wide awake) ALL night and that has never happened before (normally I sleep thru the night)!  I didn't relate it to Forteo but to being in a hotel bed (which seemed comfortable).  We couldn't go sightseeing the next day, as I was so exhausted from not sleeping.  Then it occurred to me that I should perhaps not take the Forteo while on vacation and ceased my injection the 2nd night.  I slept a bit better the next night, and yet better the next.  I was finally able to go sightseeing after that. I waited to come home again to take the Forteo again...and you can probably guess that I was sleepless even in my own bed at home after taking the Forteo.  I've tried morning injections and injections about 5 hours before bed.  This complete sleeplessness occurred 10 weeks after beginning treatment.  I have an appt. with my doctor in 2 weeks days for followup, but in the meantime, I have not taken the Forteo.  I had been on both Fosomax and Actonel prior and after many years on Actonel, I had SEVERE joint/muscle pain (agony), so I hoped for a new solution to help my osteoporosis that does not have MAJOR side effects.  Reclast was one other drug my doctor had suggested...  those side effects worried me as to cancer, as I have a family history of cancer.  I'm beginning to fear that these cures are worse than the disease....   HELP!