Thank you for questionAs always I would suggest speaking with your board certified plastic surgeon about preoperative care prior to your surgery. I usually suggest to stop all blood thinners at least two weeks before surgery however , collagen could help with healing.
Most likely magnesium and collagen do not affect the "blood clotting" mechanism and will not need to be stopped. In general it is safest as a precaution to stop all non-essential supplements as many ingredients are not well known or controlled for their effects. With the 24 hour recovery technique, most patients don't even have a bruise except a slight amount around the incision and hence we don't typically worry. There are lists of medications available from our office and your pharmacist would be great reference to any that you may be taking that would affect the blood clotting and pre-dispose you to having a hematoma. We are always open to advising any patient that calls us via telemedicine or in person.M. Kara, MD, FRCSC. Specializing in 24 Hour Recovery Breast Augmentation.