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PCSK9 Inhibitor (Monoclonal Antibody)

Evolocumab

Brand names: Repatha

Evolocumab is a subcutaneously injected monoclonal antibody (a PCSK9 inhibitor) used to lower LDL cholesterol in primary hypercholesterolaemia, mixed dyslipidaemia and established cardiovascular disease.

Dosing — being independently re-sourced

ClinCalc Pro is rebuilding its dose data from primary open sources — the manufacturer SmPC (eMC), the WHO Model Formulary and other official references — under clinician review. This drug's structured dose is not yet published here. Confirm all doses against the product SmPC and your local formulary before prescribing.

Clinical monograph

How it works

It binds and inhibits proprotein convertase subtilisin/kexin type 9, preventing degradation of hepatic LDL receptors so more receptors recycle to the cell surface and clear LDL cholesterol from the blood.

Prescribing in practice

  • It is contraindicated in patients with a known hypersensitivity to the product, and injection-site reactions and occasional hypersensitivity are the main safety concerns.
  • It is used as an adjunct to diet and maximally tolerated statin therapy, or alone or with other agents when statins are not tolerated.
  • NICE restricts use to defined LDL thresholds depending on cardiovascular risk category.

Monitoring

Lipid profile is checked to confirm response, but routine ongoing laboratory monitoring of the drug itself is not generally required.

Counselling the patient

  • Rotate injection sites and allow the pen or syringe to reach room temperature before injecting.
  • Continue your statin and lifestyle measures unless told otherwise.
  • Store in the refrigerator and protect from light.

Evidence & guidelines

The FOURIER trial showed evolocumab reduced cardiovascular events on top of statin therapy, underpinning its NICE-approved cardiovascular indications.

Reference: FOURIER trial (Sabatine et al. NEJM 2017); NICE TA394; MHRA SPC Repatha; ESC/EAS Dyslipidaemia Guidelines (2019); Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.