Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Fondaparinux is an injectable anticoagulant for clot prevention and treatment. It belongs to the Injectable blood thinner (heparin) group. These fast-acting injectable anticoagulants prevent and treat clots.
Preventing clots after surgery or during hospital stays
Treating deep-vein and lung clots
During pregnancy (when a blood thinner is needed)
Common brand names
India: Arixtra, Fondaparin
Worldwide: Arixtra
Common side effects
Bruising at injection sites
Bleeding tendency
Rarely, low platelets
Before taking it — precautions
Rotate injection sites
Report unusual bleeding
Dose adjusted in kidney disease
When to see a doctor urgently
Black stools, blood in urine/vomit, or coughing blood
Severe headache or a bad fall
A sharp drop in platelets (rare)
Not a prescription — no dose shown. The right dose of fondaparinux depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Why is a heparin injection used instead of tablets?
It works fast and is easy to control, so it is used in hospital, after surgery, and in pregnancy where tablet blood thinners may be unsuitable.
Can I inject enoxaparin at home?
Yes — many people are taught to give the pre-filled injection under the skin at home, rotating sites and watching for bleeding.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.