Patient: SUB. IBANDRONIC ACID TABLETS “IDROFOS 150″My BMD showed -1.7 (done on a portable machine where one has to keep their feet). My doctor has prescribed Idrofos 150 once a month for the next 12 months. I am 48 and have not reached menopause. Is it safe to use this medicine. I suffer from sciatica, lumbar and cervical spondylosis, arthritis and tendonitis.