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Eflornithine

Updated 2 Feb 2023 | Hirsutism

Drugs List

  • eflornithine 11.5% cream
  • VANIQA 11.5% cream
  • Dosage

    Adults

    A thin layer of the cream should be applied to clean and dry affected areas twice daily, at least 8 hours apart.

    Should skin irritation or intolerance occur, treatment should be reduced to one application a day. If skin irritation continues, treatment should be discontinued.

    Improvement of the condition may be noticed within 8 weeks from the start of treatment.
    Continued treatment is necessary to maintain benefits and may result in further improvement.
    After discontinuation of eflornithine cream, the condition may return to pre-treatment levels within 8 weeks.

    The maximum dose applied safely during clinical trials was 30g per month.

    Treatment should be discontinued if no beneficial results are seen within 4 months of therapy.

    Elderly

    No dosage adjustment is necessary. (See adult dose)

    Children

    The safety and efficacy of the use of eflornithine in children younger than 12 years has not been established.

    Adolescents

    Children age 12 - 18 years
    See Adults dosage.

    Patients with Renal Impairment

    The safety and efficacy of the use of eflornithine cream in patients with renal impairment has not been established. Less than 1% of a dose applied topically is absorbed. In studies 80% of parenterally administered doses were excreted in the urine within 24 hours.

    Patients with Hepatic Impairment

    The safety and efficacy of the use of eflornithine cream in patients with hepatic impairment has not been established. Less than 1% of a dose applied topically is absorbed. In studies 80% of parenterally administered doses were excreted in the urine within 24 hours.

    Additional Dosage Information

    Administration

    For topical application.

    The cream should be rubbed in thoroughly. Eflornithine cream should be applied such that no visual residual product remains on the treated areas. The treatment area should not be cleansed for 4 hours following application in order to ensure maximal efficacy. Cosmetics and sunscreens may be applied to the treatment area but no sooner than 5 minutes after application. Contact with eyes and mucous membranes should be avoided. Hands should be washed thoroughly following application. Efficacy has only been demonstrated for areas of the face and under the chin, therefore application should be limited to these areas. Patients may need to continue with the use of a hair removal method (e.g. plucking or shaving) whilst using eflornithine cream. In such cases, eflornithine cream should be applied no sooner than 5 minutes after hair removal, as increased stinging or burning may occur.

    Contraindications

    Pregnancy ( see Pregnancy section )
    Lactation ( see Lactation section )
    Children under 12 years

    Precautions and Warnings

    Excessive facial hair growth in women may occur as a result of serious underlying disorders (e.g. polycystic ovary syndrome, androgen secreting neoplasm) or from the use of certain medicinal products. When prescribing eflornithine cream, these factors should be considered.

    Renal impairment - (see Dosage, Renal Impairment)

    Hepatic impairment - (see Dosage, Hepatic Impairment)

    Contact with eyes and mucous membranes should be avoided.

    The preparation contains cetostearyl alcohol and stearyl alcohol which may cause local skin reactions. The preparation also contains methyl parahydroxybenzoate and propyl parahydroxybenzoate which may cause allergic reactions, which may be delayed.

    Should skin irritation or intolerance occur, treatment should be reduced to one application a day. If skin irritation continues, treatment should be discontinued.

    Transient stinging or burning may occur if eflornithine cream is applied to abraded or broken skin.

    Pregnancy and Lactation

    Pregnancy

    Eflornithine is contraindicated during pregnancy.

    Animal studies in rats and rabbits, at high doses have shown reproductive toxicity, without evidence of teratogenicity, from the use of eflornithine.
    19 pregnancies were recorded during trials with topical eflornithine. These exposures resulted in: 5 elective abortions, 4 miscarriage, 1 child with Down syndrome (mother aged 35 years) and 9 healthy infants. Women who are pregnant or planning pregnancy should use alternative means to manage facial hair.

    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 ( www.toxbase.org ) or if this is unavailable at the backup site ( www.toxbasebackup.org ).

    Lactation

    Eflornithine is contraindicated during lactation.

    It is not known if eflornithine is excreted in human breast milk.

    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 https://www.midlandsmedicines.nhs.uk/content.asp?section=6&subsection=17&pageIdx=1

    Counselling

    Advise patients that continued use is necessary to maintain effect.

    Should skin irritation or intolerance occur, treatment should be reduced to one application a day. If skin irritation continues, treatment should be discontinued and the treating physician should be consulted.

    The cream should be rubbed in thoroughly.

    Eflornithine cream should be applied such that no visual residual product remains on the treated areas. The treatment area should not be cleansed for 4 hours following application in order to ensure maximal efficacy.

    Cosmetics and sunscreens may be applied to the treatment area but no sooner than 5 minutes after application.

    Advise patients to avoid contact with eyes and mucous membranes.

    Instruct patients to wash their hands after application of the cream.

    Efficacy has only been demonstrated for areas of the face and under the chin, therefore application should be limited to these areas.

    Patients may need to continue with the use of a hair removal method (e.g. plucking or shaving) whilst using eflornithine cream. In such cases, eflornithine cream should be applied no sooner than 5 minutes after hair removal, as increased stinging or burning may occur.

    Side Effects

    Acne
    Pseudofolliculitis barbae
    Alopecia
    Stinging
    Burning sensation
    Dry skin
    Pruritus
    Erythema
    Tingling sensation
    Irritation (localised)
    Rash
    Folliculitis
    Ingrown hair
    Oral oedema
    Dermatitis
    Papulovesicular rash
    Bleeding skin
    Herpes simplex
    Eczema
    Cheilitis
    Furunculosis
    Contact dermatitis
    Hypopigmentation
    Flushing
    Numbness
    Sore skin
    Rosacea
    Seborrhoeic dermatitis
    Skin neoplasm
    Maculopapular rash
    Skin cysts
    Vesiculo-bullous reactions
    Skin disorder
    Hirsutism
    Skin tightness
    Facial oedema
    Hair growth abnormal
    Changes in hair texture
    Oral oedema

    Overdosage

    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 ( www.toxbase.org ) or if this is unavailable at the backup site ( www.toxbasebackup.org ).

    Further Information

    Last Full Review Date: October 2011

    Reference Sources

    British National Formulary, 62nd Edition (2011) Pharmaceutical Press, London.

    Martindale: The Complete Drug Reference, 37th edition (2011) ed. Sweetman, S. Pharmaceutical Press, London.

    Summary of Product Characteristics: Vaniqa 11.5% cream. Almirall Ltd. Revised March 2011.

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