Hello, As you are an osteoporotic patient you must have been put on Gemcal, Gemfos , these two medications can have side effects like heartburn, nause, reduced appetite, occasionally constipation to relieve you from this you have also been prescribed PAN DSR, can u please tell if the injection you mentioned is alcosta or Aclasta, because I m not sure what alcosta injection is , Aclasta injection can be given to people suffering from osteoporosis , this also have Gastrointestinal side effects, like nausea, heart burn , constipation again for which PAN DSR, will do the job, it has other side effects that can occur rarely like lightheadedness, headache,reaction at the injection site, flu like symptoms , fever with chills, tiredness, bone/muscle/joint pain. And it should not be taken if you have kidney problem. If you get any of these symptoms you should consult your doctor immediately .Hope I could help you. Thank you.