Bevacizumab
Brand names: Avastin
Bevacizumab is a recombinant humanised monoclonal antibody and an anti-angiogenic agent used in the treatment of several advanced cancers and certain ophthalmic conditions.
Adult dose
Dose auto-extracted from UK Summary of Product Characteristics (SPC) via the eMC; US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — not yet clinician-verified. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- Hypersensitivity to the active substance or any excipient
- Hypersensitivity to Chinese Hamster Ovary (CHO) cell products or other recombinant human or humanised antibodies
- Pregnancy
Side effects
- Hypertension
- Fatigue or asthenia
- Diarrhoea
- Abdominal pain
- Serious: gastrointestinal perforations; haemorrhage (including pulmonary haemorrhage/haemoptysis); arterial thromboembolism
Interactions
- No clinically meaningful effect on pharmacokinetics of irinotecan (or SN38), interferon-alfa, carboplatin or paclitaxel (US §7); however lower paclitaxel exposure was seen in some patients receiving paclitaxel + carboplatin with bevacizumab
Clinical monograph
How it works
It binds and neutralises vascular endothelial growth factor (VEGF-A), preventing it from activating its receptors and thereby inhibiting tumour angiogenesis.
Prescribing in practice
- It increases the risk of gastrointestinal perforation, serious haemorrhage, arterial thromboembolism and impaired wound healing, so treatment is interrupted around surgery and stopped if these occur.
- It is a specialist agent administered under oncology supervision, often in combination with chemotherapy.
- Hypertension and proteinuria are common and may require monitoring and management; rare cases of reversible posterior leukoencephalopathy have been reported.
Monitoring
Monitor blood pressure and urinary protein regularly during treatment, and remain alert for bleeding, thrombosis or gastrointestinal symptoms.
Counselling the patient
- Report severe abdominal pain, significant bleeding, chest pain or new neurological symptoms urgently.
- Inform the team of any planned surgery or dental procedures as treatment may need to be paused.
- Effective contraception is advised during and for a period after treatment.
Evidence & guidelines
Its efficacy across tumour types is established in randomised trials and reflected in NICE technology appraisals for selected indications.
Reference: multiple NICE TAs; ESMO; SmPC; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
Related
Curated clinical cross-links plus same-class fallbacks.
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