Thanks for asking at Healthcare Magic. I read your question and I understand your concern. There are almost no side effects if arachitol injection are used with monitoring and drug interactions are avoided. Hypercalemia is the main complication it may acute or chronic leading to nephrocalcinosis and arrhythmias. I would like to advise you to do serum calcium and phosphorus twice weekly in early days. PTH level during mid of treatment. If you experienced extreme fatigue, muscular pain and weakness, abdominal pain, constipation, disorientation and depression then contact your primary healthcare provider. Hope it helps best. Don t forget to rate this answer and close the discussion at Healthcare Magic. Take your best care. Regards Dr Ejaz