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danaparoid

Heparinoid anticoagulant (sulfated GAG mixture) · Anticoagulant

START
Prophylaxis 750 units SC BID; HIT: 2250 U IV bolus then taper infusion
TYPICAL MAX
Anti-Xa target 0.5–0.8 IU/mL (HIT)
STOP IF
Major bleeding, HIT cross-reactivity, or epidural haematoma
WATCH
Anti-Xa levels, platelets, renal function, bleeding signs; neuraxial timing
CDSCO approvedATC B01AB09
Dose laddermg/d
750prophy SC2.25kHIT load
Renal dose adjustmenteGFR mL/min/1.73m²
CAUTIONStandard dosing; monitor anti-Xa30REDUCEReduce dose; level-guided; accumulat…90

KDIGO 2024 + manufacturer label

Pharmacokineticsplasma · t hours
30minONSET4hPEAK1d1dDURATION
ONSET
30min · IV onset
PEAK
4h · SC Cmax
1d · anti-Xa t½
DURATION
1d · BID
EXCRETION
Renal — largely unchanged
route + CYP
INTERACTIONS
12 major
SEVERE in our sources
PREGNANCY
Acceptable when indicated (used in HIT during pregnancy).
FDA category + note
Top interactionssee all 12
  • AbciximabSevereDatabaseDDInter
  • AcalabrutinibSevereDatabaseDDInter
  • AlteplaseSevereDatabaseDDInter
  • AnagrelideSevereDatabaseDDInter

Mechanism

Mixture of low-molecular-weight sulfated glycosaminoglycans (heparan/dermatan/chondroitin sulfate) that potentiates antithrombin-mediated inhibition of factor Xa (anti-Xa : anti-IIa ratio ~22:1); minimal cross-reactivity with HIT antibodies — therapeutic option in heparin-induced thrombocytopenia.

Indications

Prophylaxis/treatment of VTE in heparin-induced thrombocytopenia (HIT)VTE prophylaxis (selected European indications)

Dosing

Adult
VTE prophylaxis: 750 anti-Xa units SC twice daily. HIT treatment: 2,250 anti-Xa unit IV bolus, then 400 units/h × 4 h, then 300 units/h × 4 h, then 150–200 units/h maintenance (anti-Xa target 0.5–0.8 IU/mL).
Pediatric
Specialist (paediatric anticoagulation).
Renal adjustment
Caution in severe impairment; level (anti-Xa) monitoring.
Hepatic adjustment
Caution; bleeding risk.
Geriatric
Higher bleeding risk; assess renal function.
Max dose
Per anti-Xa target (HIT) or 750 units SC BID (prophylaxis)

Pharmacokinetics

Onset
Anticoagulation within 30–60 min (IV)
Peak effect
End of infusion / 2–5 h SC
Duration
~24 h (SC prophylactic)
Half-life
Anti-Xa ~24 h
Bioavailability
SC ~100% (anti-Xa)
Protein binding
Low
Metabolism
Minimal metabolism
Excretion
Renal (largely unchanged)

Contraindications

  • Severe haemorrhage
  • Severe haemorrhagic stroke
  • Severe uncontrolled hypertension
  • Documented danaparoid hypersensitivity
  • Caution: severe renal/hepatic impairment

Side effects

Common
BleedingInjection-site reactionsMild transaminase rise
Serious
  • Major bleeding
  • Cross-reactivity with HIT antibodies (~10–15% in vitro; clinical significance lower)
  • Severe hypersensitivity
  • Spinal/epidural haematoma (neuraxial)

Pregnancy & lactation

Pregnancy

Acceptable when indicated (used in HIT during pregnancy).

Lactation

Limited data; minimal milk transfer.

Drug interactions

Abciximab
Severe
Database

Clinical effect not specified

Source: DDInter

Acalabrutinib
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Alteplase
Severe
Database

Clinical effect not specified

Source: DDInter

Anagrelide
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Antithrombin Alfa
Severe
Database

Clinical effect not specified

Source: DDInter

Antithrombin Iii Human
Severe
Database

Clinical effect not specified

Source: DDInter

Apixaban
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Argatroban
Severe
Database

Clinical effect not specified

Source: DDInter

Aspirin
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Avapritinib
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Betrixaban
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Bivalirudin
Severe
Database

Clinical effect not specified

Source: DDInter

Related guidelines

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Sources: KD Tripathi 7e·Verified: 2026-05-20 · House clinical team·Cockpit curated: 2026-05-20