I forgot to mention possible side effects in rats and humans.
During drug testing, the medicine in FORTEO caused some rats to develop a bone cancer called osteosarcoma.
The rats were exposed daily for two years from age two months on to doses that provided systemic exposures that were 3, 20, or 60 times the exposure in humans.
Tumors were not detected when mature 6-month old rats were treated with a dose that provided systemic exposure equal to 3 times the exposure in humans.
Osteosarcoma has rarely been reported in people. It also has rarely been reported in people who took FORTEO. It is not known if people who take FORTEO have a higher chance of getting osteosarcoma, or a chance that is lower, but if there is any difference in chance between those taking, and those not taking Forteo, the chance could be assumed to be higher in those taking it.
Clinical trial experience in human males and females with osteoporosis found:
"The incidence of all cause mortality was 1% in the FORTEO group and 1% in the placebo group. The incidence of serious adverse events was 16% in FORTEO patients and 19% in placebo patients. Early discontinuation due to adverse events occurred in 7% of FORTEO patients and 6% of placebo patients."
The list of those events did not include osteosarcoma
In Men and Women with Glucocorticoid-Induced Osteoporosis:
The incidence of all cause mortality was 4% in the FORTEO group and 6% in the active control group. The incidence of serious adverse events was 21% in FORTEO patients and 18% in active control patients, and included pneumonia (3% FORTEO, 1% active control). Early discontinuation because of adverse events occurred in 15% of FORTEO patients and 12% of active control patients, and included dizziness (2% FORTEO, 0% active control).
Adverse events reported at a higher incidence in the FORTEO group and with at least a 2% difference in FORTEO-treated patients compared with active control-treated patients were: nausea (14%, 7%), gastritis (7%, 3%), pneumonia (6%, 3%), dyspnea (6%, 3%), insomnia (5%, 1%), anxiety (4%, 1%), and herpes zoster (3%, 1%), respectively.The list of those events did not include osteosarcomaIf you believe that you would be at risk for osteosarcoma if you were to take Forteo and you feel that your risk would outweight possible benefit, then you should probably choose not to take Forteo.
However, if you know that you would be at risk, then you definitely should not take it.
Patients who are at increased risk for osteosarcoma include those with Paget's disease of bone or unexplained elevations of alkaline phosphatase results in a blood test, pediatric and young adult patients with open epiphyses, or prior external beam or implant radiation therapy involving the skeleton.