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Moxifloxacin solution for infusion

Updated 2 Feb 2023 | Quinolones


Solution for infusion containing moxifloxacin (as hydrochloride).

Drugs List

  • AVELOX 400mg/250ml solution for infusion
  • moxifloxacin 400mg/250ml solution for infusion
  • Therapeutic Indications


    Community acquired pneumonia
    Complicated skin and soft tissue infections

    Treatment of community acquired pneumonia (CAP) when other antibacterial treatment is considered inappropriate.

    Treatment of complicated skin and skin structure infections (cSSSI) when other antibacterial treatment is considered inappropriate.


    Consideration should be given to official guidance on the appropriate use of antibacterial agents.


    400mg moxifloxacin by intravenous infusion once daily over 60 minutes.

    Initial intravenous treatment may be followed by oral treatment with moxifloxacin 400mg tablets, when clinically indicated. The recommended total duration of intravenous and oral treatment is 7 to 14 days for CAP and 7 to 21 days for cSSSI.

    Additional Dosage Information

    Moxifloxacin has been shown to prolong the QT interval and the magnitude of QT prolongation may increase with increasing plasma concentrations due to rapid intravenous infusion. Therefore, the duration of infusion should not be less than the recommended 60 minutes and the intravenous dose of 400mg once a day should not been exceeded.


    For intravenous infusion only.

    Do not use if there are any visible particulate matter or if the solution is cloudy. At cool storage temperatures precipitation may occur, which will re-dissolve at room temperature. It is therefore recommended that moxifloxacin is only stored at room temperature.


    Children under 18 years
    Elevated serum transaminases - greater than 5 times upper limit of normal
    History of cardiac arrhythmias
    History of tendon disorder secondary to quinolone use
    Left ventricular ejection fraction below lower limit of normal
    Long QT syndrome
    Severe hepatic impairment - Child-Pugh score greater than or equal to 10
    Torsade de pointes

    Precautions and Warnings

    Family history of G6PD deficiency
    Family history of long QT syndrome
    Organ transplant recipients
    Patients over 60 years
    Predisposition to aortic aneurysm
    Predisposition to aortic dissection
    Predisposition to cardiac arrhythmia
    Predisposition to seizures
    Restricted sodium intake
    Aortic aneurysm
    Aortic dissection
    Diabetes mellitus
    Electrolyte imbalance
    G6PD deficiency
    History of psychiatric disorder
    History of seizures
    History of torsade de pointes
    Myasthenia gravis
    Psychiatric disorder
    Reduced seizure threshold
    Renal impairment

    Correct electrolyte disorders before treatment
    May exacerbate myasthenia gravis
    Monitor for haemolysis in G6PD deficiency
    Not recommended for methicillin resistant staphylococci infections
    Sodium content of formulation may be significant
    Advise ability to drive/operate machinery may be affected by side effects
    Advise patient not to drive until they know how the medicine affects them
    Consult national/regional policy on the use of anti-infectives
    Perform ECG before and during treatment
    Consider pseudomembranous colitis if patient presents with severe diarrhoea
    Discontinue at first sign of pain/inflammation of limb(possible tendonitis)
    Discontinue treatment if patient develops seizures
    If hepatic impairment symptoms occur monitor LFT & consider discontinuation
    If rash develops, consider possibility of Stevens-Johnson Syndrome
    Monitor blood glucose closely in patients with diabetes mellitus
    Monitor serum electrolytes
    Advise patient to report any blurred vision or any other eye symptoms
    Advise patient to report any changes in vision, taste, smell or hearing
    Advise patient to report mucosal/skin reactions (blistering or peeling)
    Advise patient to report signs of neuropathy
    Advise patient to report signs of tendinitis
    Advise patient to report tiredness, mood, memory or sleep disturbances
    Advise patient to rest affected limb if tendonitis occurs
    Advise patient to seek medical advice if joint aches or pain occur
    Advise patients to report muscle pain/tenderness/weakness
    Advise patients to report signs of hepatic damage (malaise, jaundice etc.)
    Advise pt. to seek medical attention if sudden abdominal,chest or back pain
    Discontinue if central nervous disturbances occur
    Discontinue if psychiatric disturbances develop
    Patients over 60 years are prone to tendon inflammation
    Predisposition QT prolongation: Counsel patient on symptoms of arrhythmias
    May affect results of some laboratory tests
    Discontinue at once if pseudomembranous colitis occurs
    Discontinue if hypersensitivity reactions occur
    Discontinue if peripheral neuropathy occurs
    Discontinue if photosensitivity occurs
    Discontinue in patients showing suicidal behaviour
    Discontinue treatment if arrhythmias occur
    Advise patient to avoid exposure to sunlight and UV rays during treatment

    Elderly patients with renal impairment should be treated with caution if they are unable to maintain adequate fluid intake. Dehydration in these patients may increase the risk of renal failure.

    Elderly patients may be more sensitive to moxifloxacin's QTc-prolonging effects. Special caution is required in this age group.

    With or without ECG findings, treatment with moxifloxacin should be stopped if any signs or symptoms associated with cardiac arrhythmia occurring during the course of treatment. Female and elderly patients may be more sensitive to the effects of QT prolongation caused by moxifloxacin. Moxifloxacin should be used with caution in patients with any condition pre-disposing to cardiac arrhythmias as they may have an increased risk of developing ventricular arrhythmias and cardiac arrest.

    There is a risk of potentially fatal pseudomembranous colitis with broad spectrum antibiotics. It is important to consider this in patients suffering from severe, persistent diarrhoea. If pseudomembranous colitis is suspected, treatment with moxifloxacin should be stopped and appropriate treatment given. In these cases, drugs that inhibit peristalsis should not be administered.

    There is an increased risk of aortic aneurysm and dissection following treatment with moxifloxacin. Use moxifloxacin only after careful benefit risk assessment in patients with positive family history of aneurysm disease, or in patients diagnosed with pre-existing aortic aneurysm and or aortic dissection, or in the presence of other risk factors or conditions predisposing for aneurysm and dissection (e.g. Marfan syndrome, vascular Ehlers-Danlos syndrome, Takayasu arteritis, giant cell arthritis, Behcet's disease, hypertension, known atherosclerosis.)

    Disabling, long-lasting and potentially irreversible adverse reactions mainly affecting musculoskeletal and nervous systems have been reported with quinolone and fluoroquinolone antibiotics. Treatment should be discontinued at the first signs of a serious adverse reaction such as tendinitis, pain or inflammation.

    Pregnancy and Lactation


    Moxifloxacin is contraindicated during pregnancy.

    Moxifloxacin has been shown to cross the human placenta.

    At the time of writing there is insufficient information to assess the effects of moxifloxacin on the developing foetus. Animal studies indicate a potential risk of fetal cartilage damage.

    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 14-17 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 ( ).


    Moxifloxacin is contraindicated during breastfeeding.

    At the time of writing, there are no data available in breast feeding women.

    The molecular weight, plasma protein binding and long elimination half-life suggest moxifloxacin will be excreted into breast milk. Preclinical data indicates small amounts of moxifloxacin are secreted in breast milk.

    Other antibiotics should be used when possible.

    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

    Abnormal INR
    Allergic reaction
    Angina pectoris
    Atrial fibrillation
    Attention disturbances
    Cardiac arrest
    Decreased appetite
    Depression (with risk of suicide)
    Dream abnormalities
    Elevated amylase levels
    Emotional lability
    Exacerbation of myasthenia gravis
    Gamma glutamyl transferase (GGT) increased
    Gastro-intestinal disturbances
    Haemolytic anaemia
    Hearing disturbances
    Hepatic impairment
    Impaired co-ordination
    Increase in alkaline phosphatase
    Increase in serum transaminases
    Injection site reactions
    Muscle cramps
    Muscle rigidity
    Muscle twitch
    Muscle weakness
    Peripheral neuropathy
    Prolongation of QT interval
    Prothrombin time increased
    Pseudomembranous colitis
    Psychomotor hyperactivity
    Psychotic reactions
    Renal failure
    Renal impairment
    Serum bilirubin increased
    Serum creatinine increased
    Skin reactions
    Sleep disturbances
    Smelling disturbances
    Speech disturbances
    Stevens-Johnson syndrome
    Taste disturbances
    Tendon rupture
    Thrombophlebitis (localised)
    Torsades de pointes
    Toxic epidermal necrolysis
    Ventricular tachyarrhythmias
    Visual disturbances

    Effects on Laboratory Tests

    Moxifloxacin may cause false negative results in Mycobacterium spp. culture tests by suppressing mycobacterial growth.


    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: November 2017

    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.

    Summary of Product Characteristics: Avelox 400mg/250ml solution for infusion. Bayer plc. Revised September 2018.

    MHRA Drug Safety Update March 2019
    Available at:
    Last accessed: 20 May 2019

    NICE Evidence Services Available at: Last accessed: 08 November 2017

    US National Library of Medicine. Toxicology Data Network. Drugs and Lactation Database (LactMed). Record 191- Moxifloxacin
    Available at:
    Last revised: 08 August 2017
    Last accessed: 13 November 2017

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