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Palonosetron parenteral

Updated 2 Feb 2023 | 5HT3 antagonists


Injections of palonosetron.

Drugs List

  • ALOXI 250microgram/5ml injection
  • palonosetron 250microgram/5ml injection
  • Therapeutic Indications


    Chemotherapy induced nausea and vomiting

    Prevention of nausea and vomiting associated with moderately emetogenic and highly emetogenic cancer chemotherapy.


    Efficacy may be enhanced by concomitant administration of a corticosteroid.


    250 micrograms as a single dose, administered 30 minutes before chemotherapy is started.


    Children aged 1 month to 18 years
    20micrograms/kg (maximum 1500 micrograms) as a single dose, administered 30 minutes before chemotherapy is started.


    For intravenous injection only.

    Children (aged 1 month to 18 years):
    For intravenous infusion only.


    Neonates under 1 month
    Long QT syndrome
    Torsade de pointes

    Precautions and Warnings

    Children under 2 years
    Family history of long QT syndrome
    Cardiac conduction defects
    Congestive cardiac failure
    Electrolyte imbalance
    End stage renal disease
    History of torsade de pointes
    Subacute gastrointestinal obstruction

    Correct electrolyte disorders before treatment
    Advise ability to drive/operate machinery may be affected by side effects
    Consider monitoring ECG in patients at risk of QT prolongation
    Monitor patients for signs and symptoms of Serotonin Syndrome
    Monitor serum electrolytes

    Use with caution in children aged 1 month to 2 years as experience is limited.

    Use with caution in patients with end stage renal disease undergoing haemodialysis as experience is limited. No dose adjustments are necessary.

    As palonosetron may increase large bowel transit time, patients with a history of constipation or signs of subacute intestinal obstruction should be monitored following administration.

    Palonosetron must only be used as a preventative treatment, given prior to chemotherapy. It should not be used to treat, or prevent further episodes of, nausea and vomiting in the days following chemotherapy administration unless further doses of chemotherapy are scheduled.

    Pregnancy and Lactation


    Use palonosetron with caution during pregnancy.

    At the time of writing, there is limited published data regarding the use of palonosetron during pregnancy. Animal studies have not indicated direct or indirect harmful effects. There is no published experience of palonosetron during human pregnancy. The manufacturer advises palonosetron should not be used during pregnancy unless it is considered essential by the physician.

    Transfer across the placenta is unknown. The molecular weight of the free base, moderate protein binding and metabolism and extended plasma-half life suggest substantial amounts of active drug will be at the maternal-foetal interface for prolonged periods.

    The use of all medication in pregnancy should be avoided whenever possible; particularly in the first trimester. Non-drug treatments should also be considered. When essential, a medication with the best safety record over time should be chosen, employing the lowest effective dose for the shortest possible time. Polypharmacy should be avoided. Teratogens taken in the pre-embryonic period, often quoted as lasting until 14 to 17 days post-conception, are believed to have an all-or-nothing effect. Where drugs have a short half-life, and when the date of conception is certain, this may allow women to be reassured where drug exposure has occurred within this time frame. Further advice may be available from the UK National Teratology Information Service (NTIS) and through ToxBase, available via password on the internet ( ) or if this is unavailable at the backup site ( ).


    Palonosetron is contraindicated during breastfeeding.

    At the time of writing, there is limited published information available regarding the use of palonosetron during breast feeding. Transfer into breast milk is unknown however the molecular weight of the free base, moderate protein binding and metabolism and extended plasma-half life suggests excretion is likely. Effects on exposed infants are unknown but as palonosetron is only used for short periods, the risk of toxicity is likely to be remote. The manufacturer advises that breast feeding is discontinued.

    Neonates, infants born prematurely, those with low birth weight, those with an unstable gastrointestinal function or who have serious illnesses may require special consideration. For any infant, if a drug is prescribed to the nursing mother, it should be at the lowest practical dose and for the shortest time. When drug administration is unavoidable and breastfeeding is to continue, minimisation of exposure of the infant to the drug may sometimes be achieved by timing the maternal doses to just after a feeding episode. Infants exposed to drugs via breast milk should be monitored for unusual signs or symptoms. Interactions between the drug received by the infant from the mother's milk and medication prescribed for the infant should also be considered, for example, when the drug given to the infant may prevent metabolism of the drug received via breast milk.
    Specialist advice is available from the UK Drugs in Lactation Advisory Service at

    Side Effects

    Abdominal pain
    Allergic dermatitis
    Anaphylactic reaction
    Anaphylactoid reaction
    Decreased appetite
    Dry mouth
    Eye irritation
    Hot flushes
    Hypersensitivity reactions
    Increase in serum transaminases
    Influenza-like symptoms
    Injection site reactions
    Local pain (injection site)
    Metabolic disorders
    Motion sickness
    Myocardial ischaemia
    Peripheral neuropathy
    Prolongation of QT interval
    Pruritic rash
    Sinus arrhythmia
    Sinus tachycardia
    Skin disorder
    Urinary retention
    Vein discolouration
    Vein distended
    Ventricular extrasystoles


    It is strongly recommended that the UK National Poisons Information Service be consulted on cases of suspected or actual overdose where there is doubt over the degree of risk or about appropriate management.

    The following number will direct the caller to the relevant local centre (0844) 892 0111

    Information may be obtained if you have access to ToxBase the primary clinical toxicology database of the National Poisons Information Service. This is available via password on the internet ( ) or if this is unavailable at the backup site ( ).

    Further Information

    Last full review date: February 2018

    Reference Sources

    Drugs During Pregnancy and Lactation: Treatment Options and Risk Assessment, 3rd edition (2015) ed. Schaefer, C., Peters, P. and Miller, R. Elsevier, London.

    Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk, 10th edition (2015) ed. Briggs, G., Freeman, R. Wolters Kluwer Health, Philadelphia.

    Medications and Mothers' Milk, Sixteenth Edition (2014) Hale, T and Rowe, H, Hale Publishing, Plano, Texas.

    Summary of Product Characteristics: Aloxi 250 micrograms solution for injection. Chugai Pharma UK Ltd. Revised February 2015.

    Summary of Product Characteristics: Palonosetron Accord 250 micrograms solution for injection. Accord Healthcare Ltd. Revised May 2016.

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