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Lipid-lowering agent (PCSK9 inhibitor, injectable monoclonal antibody)

Evolocumab: uses, side effects & precautions

Also known as Repatha.

Esta información es solo orientativa de carácter general y no constituye un consejo médico. Consulta siempre a un profesional sanitario cualificado para cualquier asunto médico personal. En caso de emergencia, llama al número de emergencias de tu zona.

What it is used for

  • Lowering high LDL cholesterol when statins alone are not enough or are not tolerated
  • Inherited high-cholesterol conditions (familial hypercholesterolaemia)
  • Reducing cardiovascular risk in people with established heart or artery disease

How it works

Evolocumab blocks a protein called PCSK9 that normally breaks down LDL receptors on the liver. With more receptors available, the liver clears more LDL cholesterol from the blood, producing a large fall in 'bad' cholesterol.

How it is taken

Supplied as a liquid in a pre-filled pen or syringe for injection under the skin (tummy, thigh or upper arm), usually every few weeks. People who self-inject are trained by a nurse or pharmacist. Use it exactly as directed, rotate injection sites, and store it as instructed (often refrigerated). It is usually used alongside a statin and a healthy diet.

No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.

Common side effects

  • Redness, pain or bruising at the injection site
  • Cold-like symptoms or sore throat
  • Back or joint pain
  • Headache
  • Nausea

Serious effects — get help

  • Serious allergic reaction: facial or throat swelling, widespread rash, trouble breathing - seek urgent care
  • Severe or persistent injection-site reactions

If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.

Interactions to watch

  • Few significant medicine interactions are known; it is commonly combined with statins and ezetimibe
  • Always share your full medicine list so your clinician can review your overall plan

Who should take care

  • Tell your clinician if pregnant, planning pregnancy or breastfeeding so the benefits and risks can be discussed
  • Tell them about any latex allergy, as some pen caps may contain latex
  • Learn correct injection and storage technique from a professional
  • Keep using any statin or diet measures your clinician advises alongside it

Frequently asked questions

Why an injection for cholesterol?
Evolocumab is a protein-based medicine that would be broken down if swallowed, so it is given by injection under the skin, usually only every few weeks.
Does it replace my statin?
Usually it is added to a statin (or used when statins are not tolerated) for an extra large drop in LDL cholesterol. Your clinician decides the combination.
How do I store it?
It is generally kept in the fridge and allowed to reach room temperature before injecting. Follow the exact storage and handling instructions provided.
How will I know it is working?
Your clinician checks cholesterol blood tests. You will not feel a day-to-day difference, which is normal.
Is Evolocumab safe to take?
For most people it is safe when taken exactly as a doctor or pharmacist advises and as printed on the label. Tell your clinician about your other medicines and health conditions, and seek urgent care for any serious reaction.

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