I asked my doctor to fill a small list of prescriptions for upcoming BBL surgery and they were dead set against Heparin-would not prescribe it or recommend it. (I know it is a blood thinner to prevent clots.): -HEPARIN 40 MG: Subcutaneous injection 1 per day for 8 days.. What are your thoughts on the Heparin? Is it advisable? Necessary? Worth the risk? or should it be replaced by something else? Or just not needed?