I asked my nurse about both of these. She advised that I could take arnica tablets for one week prior to my surgery and for one week afterwards. She also advised to stop using bio oil four days prior to my surgery and to refrain from using it afterwards for at least six weeks. Incidentally, I didn’t actually end up using either, and I haven’t suffered from severe bruising, swelling or stretch marks (so far) . It’s all very much personal preference I think and depends on what you feel most comfortable doing.
