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What are the side effects of dalteparin?

Dalteparin may cause a number of side effects. Get emergency medical attention if you experience signs of an allergic reaction, such as hives, itchy skin rash, difficulty breathing or swelling of the face, tongue or throat. Discontinue treatment and talk to your doctor as soon as possible if you experience any of the following severe side effects: easy bruising or bleeding that will not stop; bloody, black or tarry stools; pink or red urine; difficulty walking; severe or persistent dizziness or fainting; numbness or tingling in the feet or legs; muscle weakness; red or brown vomit that resembles coffee grounds; unusually heavy menstrual periods; or feverish symptoms.

Dalteparin also may cause more common side effects that do not require medical attention unless they worsen or persist. Call your doctor if the following mild side effects become bothersome: pain, swelling, redness at the injection site or upset stomach. During dalteparin treatment, tell your doctor if you experience any side effects that are not listed here.

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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.