I've been told that aspirin is used to prevent blood clots after hip or knee surgery. I am allergic to aspirin. Is there anything else I can use?

Make sure your doctor knows about this. He or she will arrange for the best alternative choice. Aspirin is used to prevent blood clots by reducing the number of platelets circulating in the blood. The platelets help the blood form clots. This treatment is called anticoagulation therapy. There are other drugs that have the same effect. For example, enoxaparin, also known as low-molecular-weight heparin is one. Warfarin is another. Aspirin has the best results after knee surgery because it also reduces pain and swelling and makes it easier to move the leg. Rehab under the guidance of a physical therapist can do the same thing when a patient must take a different form of anticoagulant that doesn’t have these effects.

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