Several reports demonstrate unexplained consequences of mutations on the expression of the different dystrophin isoforms and their balance. The most prominent example is found in some cases of X-linked dilated cardiomyopathy (XLDC).
In particular, calcitonin has the ability to decrease blood calcium levels at least in part by effects on two well-studied target organs: 1  Bone: Calcitonin suppresses resorption of bone by inhibiting the activity of osteoclasts, a cell type that digests bone matrix, releasing calcium and phosphorus into blood.
Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking calcitonin: Incidence not known. Blurred vision; chills or fever; cough; difficulty with breathing; difficulty with swallowing; dizziness; frequent urination; headache; joint pain