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What are the side effects of Heparin?

In rare cases, heparin may cause a severe allergic reaction that leads to difficulty breathing, swelling in the face or throat, dizziness and hives. If you develop these symptoms after using heparin, get immediate medical attention. Heparin may increase your risk for uncontrolled bleeding. Tell your doctor if you experience unusual bruising, persistent nosebleeds, unusual menstrual bleeding or bloody stools. If you develop symptoms, such as chest pain, trouble breathing, slurred speech, confusion or one-sided weakness after using heparin, seek emergency medical treatment.

Some people develop a serious reaction to the injection process, so tell your doctor right away if you develop symptoms, such as difficulty breathing, sweating or lightheadedness during or after an injection of heparin. Other serious side effects of heparin may include severe swelling at the injection site, bone pain and swelling in the legs. Heparin may also cause less severe side effects, including mild pain or irritation at the injection site. Other side effects may be possible, so talk to your doctor if any new or unusual symptoms develop after using heparin.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.