Hi Cherylek . It is hard to know what the side effects are from with all the treatment we have to have . I have had the panadol with osteo in it but have not taken it regularly. Maybe that's what I have to do for the next 6 weeks . I just thought that there is enough poison going through my body but I don't want to put up with the pain for another 6 weeks . Iam seeing my Oncologist next week so I will check with him about taking osteo / panadol Regularly .Thank you for your reply and best wishes for the next 6 rounds of Herceptin . Regards Michelle