Heparin

Pronounced HEP-ah-rin

Brand names: Heparin

Type: Anticoagulant (blood thinner) · All Heart & Blood Pressure Medicines

What Heparin is used for

  • Treating blood clots in hospital
  • Preventing clots during surgery, dialysis, and hospital stays
  • Keeping blood lines open

◆ Kidney note

A standard blood thinner used during dialysis treatments.

Common side effects

  • Easy bruising
  • Bleeding at injection sites
  • Mild pain at injection sites

Important cautions

  • Can rarely cause a serious immune reaction (heparin-induced thrombocytopenia) that lowers platelets and causes new clots — blood counts are monitored
  • Serious bleeding is the main risk

How it comes

Injection (hospital). This guide lists forms only — it never lists strengths or doses.

Related medicines — Heart & Blood Pressure Medicines

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Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.