Consumer medicine information

Mirvaso Gel

Brimonidine

BRAND INFORMATION

Brand name

Mirvaso

Active ingredient

Brimonidine

Schedule

S4

 

Consumer medicine information (CMI) leaflet

Please read this leaflet carefully before you start using Mirvaso Gel.

What is in this leaflet

This leaflet answers some common questions about MIRVASO. It does not contain all the available information.

It does not take the place of talking to your doctor or pharmacist.

All medicines have risks and benefits. Your doctor has weighed the risks of you using MIRVASO against the benefits they expect it will have for you.

If you have any concerns about taking this medicine, ask your doctor or pharmacist.

Keep this leaflet with your medicine. You may need to read it again.

What MIRVASO is used for

MIRVASO contains the active ingredient brimonidine tartrate that belongs to a group of substances known as alpha2-adrenergic receptor agonists.

MIRVASO is used for treating skin of the face affected by redness due to rosacea in adult patients.

When applied to the skin, MIRVASO gel passes through the skin and acts specifically on the blood vessels of the face to decrease the redness of rosacea.

Ask your doctor if you have any questions about why MIRVASO has been prescribed for you. Your doctor may have prescribed it for another reason.

MIRVASO is not addictive.

MIRVASO is available only with a doctor’s prescription.

Before you use MIRVASO

When you must not use it

Do not use MIRVASO:

  • for any child or adolescents under 18 years of age
  • if you are breast-feeding
  • if you are taking medicines for depression called monoamine oxidase inhibitors (eg. Nardil, Parnate) or tricyclic antidepressants (such as imipramine) or tetracyclic antidepressants (such as maprotiline, mianserin or mirtazapine).
  • if you have an allergy to any medicine containing brimonidine tartrate
  • if you have an allergy to any of the ingredients listed at the end of this leaflet

Some of the symptoms of an allergic reaction may include:

  • shortness of breath
  • wheezing or difficulty breathing
  • swelling of the face, lips, tongue or other parts of the body
  • rash, itching or hives of the skin
  • redness of skin

In case of discomfort and symptoms such as heat, itchiness or rash in the medicated or surrounding area, discontinue treatment with MIRVASO.

Do not use MIRVASO after the use by (expiry) date printed on the pack or if the packaging is torn or shows signs of tampering. If it has expired or is damaged, return it to your pharmacist for disposal.

Before you start to use it

Tell your doctor if you have or have had any of the following medical conditions:

  • heart problems
  • kidney problems
  • liver problems
  • depression
  • circulatory problems
  • decreased blood flow of the brain or the heart
  • decreased blood flow of the hands, feet or skin
  • blood pressure disorders
  • Sjögren’s syndrome (a chronic autoimmune disease in which a person’s white blood cells attack their moisture-producing glands)

Tell your doctor if you have allergies to any other medicines, preservatives, foods or dyes. MIRVASO contains methyl hydroxybenzoate which may cause allergic reactions (possibly delayed), and propylene glycol which may cause skin irritation.

Tell your doctor if you are pregnant or plan to become pregnant. Your doctor can discuss with you the risks and benefits involved.

MIRVASO should not be used on broken or irritated skin or on/close to the mucosal areas such as:

  • eyes or eyelids
  • mouth
  • lips
  • membranes of the inner nose
  • or vagina

If MIRVASO comes into contact with these areas, the area should be rinsed immediately with plenty of water.

Mirvaso should not be used as a lubricant or toothpaste

If you have not told your doctor about any of the above, tell him/her before you start using MIRVASO.

Taking other medicines

Tell your doctor or pharmacist if you are taking any other medicines, including any that you get without a prescription from your pharmacy, supermarket or health food shop.

Some substances or medicines and MIRVASO may interfere with each other. These include:

  • some antidepressant medicines called tricyclic and tetracyclic antidepressants (eg. amitriptyline or Endep and maprotiline, mianserin or mirtazapine) or monoamine oxidase inhibitors (MAOIs, eg. Nardil, Parnate) as they could result in dangerously low blood pressure
  • anaesthetic or sedative medicines , opiates or daily consumption of alcohol
  • some medicines for psychosis (eg. chlorpromazine or Largactil) or for hyperactivity (eg. methylphenidate or Ritalin)
  • cardiac glycosides (e.g. digoxin), used to treat heart problems.
  • blood pressure lowering medicine such as beta-blockers or calcium channel blockers (e.g. propranolol, amlodipine).

These medicines may be affected by MIRVASO or may affect how well it works. You may need different amounts of your medicines, or you may need to take different medicines.

Your doctor or pharmacist has more information on medicines to be careful with or avoid whilst using MIRVASO.

How to use MIRVASO

Follow all directions given to you by your doctor or pharmacist carefully. They may differ from the information contained in this leaflet.

If you do not understand the instructions on the box/tube, ask your doctor or pharmacist for help.

How to use it

MIRVASO is only intended for use on the skin in adults.

It is recommended that MIRVASO be applied once per day after your usual cleansing routine, and before any cosmetics or sunscreen are applied. These products may be used only after the applied MIRVASO has dried

Treatment should be initiated with a smaller amount of gel (less than the maximum) for at least one week with a gradual increase in the amount of gel based on tolerability and response.

Apply a small, pea size amount of MIRVASO to each of the five areas of the face (ie. forehead, chin, nose, each cheek) avoiding the eyes, eyelids, lips, mouth and membranes of the inner nose. Product should be applied smoothly and evenly across your face in a thin layer.

Mirvaso should be applied to the face only. Hands should be washed after applying MIRVASO.

Mirvaso should not be applied on irritated skin (including following laser therapy)

How much to use

Five small pea size amounts of MIRVASO is the maximum daily recommended dose.

Do not to exceed the recommended maximum dose (1g of gel in total weight or 5 pea sized amounts) and frequency of application (once daily use in a thin layer). Any increase in the daily amount applied and/or frequency of daily application of Mirvaso should be avoided, since the safety of higher daily doses or repeated daily application has not been assessed.

How to open the tube with a child-resistant cap

To avoid spillage, do not squeeze the tube while opening or closing. Push down on the cap and turn in a counter clockwise (to the left) a quarter of a turn.

How to close the tube with a child-resistant cap

Align grooves on the cap and tube. Push down and turn clockwise (to the right) a quarter turn.

How long to use it

Your doctor will tell you how long to use MIRVASO.

Do not use MIRVASO for longer than your doctor tells you. If you use MIRVASO for longer than your doctor tells you, the chance of side effects may increase.

If you are not sure how long to use MIRVASO, talk to your doctor.

What to do if it swallowed

Immediately telephone your doctor or Poisons Information Centre (telephone 13 11 26 in Australia or 0800 764766 in New Zealand), or go to Accident & Emergency at your nearest hospital, if you think that you or anyone else may have swallowed MIRVASO. Do this even if there are no signs of discomfort or poisoning, such as low blood pressure, fatigue, vomiting, somnolence, decreased or, irregular heartbeats, pupil contraction, slow-low-breathing frequency, floppiness, low body temperature or convulsions. You may need urgent medical attention. Keep these telephone numbers handy.

While you are using MIRVASO

Things you must do

Tell all doctors and pharmacists who are treating you that you are using MIRVASO.

If you feel that MIRVASO is not helping your condition, tell your doctor or pharmacist.

Tell your doctor if, for any reason, you have not used MIRVASO exactly as prescribed. Otherwise, your doctor may think that it was not effective and change your treatment unnecessarily.

If you become pregnant while using MIRVASO, tell your doctor.

Things you must not do

Do not use MIRVASO to treat any other complaint unless your doctor tells you to.

Do not give your medicine to anyone else, even if they have the same condition as you.

Do not exceed the recommended dose and frequency of application.

Things to be careful of

MIRVASO should not be used the mucosal areas such as:

  • eyes or eyelids
  • mouth
  • lips
  • membranes of the inner nose
  • or vagina.

If MIRVASO comes into contact with these areas, the area should be rinsed immediately with plenty of water.

MIRVASO should not be used as a lubricant or toothpaste.

Avoid excessive exposure to sunlight and UV lamps.

Protect your skin when you are in the sun, especially between 10 am and 3 pm. If outdoors, wear protective clothing and use a non-comedogenic, broad spectrum, SPF 50+ sunscreen.

Ask your doctor if you are concerned about the length of time you have been using MIRVASO.

Side effects

Tell your doctor or pharmacist as soon as possible if you do not feel well while you are using MIRVASO.

All medicines can have side effects. Sometimes they are serious, most of the time they are not. You may need medical treatment if you get some of the side effects.

Ask your doctor or pharmacist to answer any questions you may have.

The more common side effects of MIRVASO include:

  • skin redness
  • itching of the skin
  • flushing of the skin
  • skin burning sensation.
  • too much whitening of the application site
  • worsening of rosacea

These side effects are usually mild and short-lived. Tell your doctor if you notice any of these and they worry you.

The uncommon side effects of MIRVASO include:

  • skin discomfort, irritation, warmth or pain
  • tingling or stinging at application site
  • dry skin or rash
  • dry mouth
  • swelling of the eyelids
  • feeling hot
  • headache
  • flu-like symptoms
  • nasal congestion
  • dizziness
  • swelling of skin
  • hives
  • swelling of face
  • upper respiratory tract infection
  • acne

The rare side effects of MIRVASO include:

  • low blood pressure
  • heart rate decrease

Some people may get other side effects while using MIRVASO.

Do not be alarmed by this list of possible side effects. You may not experience any of them.

After using MIRVASO

Storage

MIRVASO should be stored in a cool, dry place where the temperature stays below 25°C. Do not refrigerate below 2°C.

Do not store it, or any other medicine, in a bathroom or near a sink. Do not leave them in the car or on windowsill. Heat and dampness can destroy some medicines.

Keep it where children cannot reach it. A locked cupboard at least one-and-a-half metres (5 feet) above the ground is a good place to store medicines.

Disposal

If your doctor tells you to stop using this medicine or the expiry date has passed, ask your pharmacist what to do with any medicine that is left over.

Product description

What it looks like

MIRVASO is a white to light yellow, opaque gel. It is supplied in either: A PE/Al/PE laminated plastic tubes with a HDPE head and plastic (PP) cap containing 2 grams of gel (sample) or with a plastic (PP) child-resistant cap containing 10 or 30 grams (trade) of gel.

Or

A PE/Al/PE copolymer polyfoil plastic tubes with a HDPE head and PE childresistant cap containing 2 grams (sample) or 10 or 30 grams (trade) of gel.

Not all pack sizes may be distributed in Australia.

Ingredients

Each gram of MIRVASO contains 3.3mg of brimonidine as the active ingredient.

It also contains the inactive ingredients:

  • glycerol
  • propylene glycol
  • carbomer 934P
  • phenoxyethanol
  • methyl hydroxybenzoate (E218)
  • titanium dioxide
  • sodium hydroxide
  • purified water

Sponsor/ distributor

Mirvaso is distributed in Australia by:

Galderma Australia Pty Ltd
Suite 4, 13B Narabang Way
Belrose NSW 2085
Ph 1800 800 765

Mirvaso is distributed in New Zealand by:

Healthcare Logistics’
58 Richard Pearce Drive
Airport OaksAuckland
Telephone 0800 174 104

Made in France

Australian Registration Number: AUST R 212325

® Registered Trademark

This leaflet updated in March 2019

Published by MIMS May 2019

BRAND INFORMATION

Brand name

Mirvaso

Active ingredient

Brimonidine

Schedule

S4

 

1 Name of Medicine

Brimonidine (as tartrate).

2 Qualitative and Quantitative Composition

One gram of Mirvaso gel contains 5 mg of brimonidine tartrate equivalent to brimonidine 3.3 mg.
For the full list of excipients, see Section 6.1 List of Excipients.

3 Pharmaceutical Form

Mirvaso gel is a white to light-yellow opaque gel.

4 Clinical Particulars

4.1 Therapeutic Indications

Mirvaso is indicated for the treatment of facial erythema of rosacea in adult patients.

4.2 Dose and Method of Administration

Once daily application. Cutaneous use only.
Treatment should be initiated with a smaller amount of gel (less than the maximum) for at least one week. The amount of gel can then be increased gradually based on tolerability and patient response.
Mirvaso should be applied in five small pea-size amounts, the total estimated to be no more than 1 g, are applied to the main areas of the face (i.e. forehead, chin, nose, each cheek) once daily after the usual cleansing routine. No more than 1 g of gel per day should be used, and application to the eyes, eyelids, lips, mouth and membrane of the inner nose should also be avoided.
For optimal facial treatment, it is recommended that application is smooth and even across all areas of the face (forehead, chin, nose and both cheeks) to avoid accidental omission of areas, and minimise noticeable contrast between treated and untreated areas.
Mirvaso should be applied to the face only. Hands should be washed immediately after applying Mirvaso.
Other creams or lotions such as cosmetics and sunscreen may be applied after the application of Mirvaso. These products should not be applied immediately before the daily application of Mirvaso; they may be used only after the applied Mirvaso has dried.

4.3 Contraindications

Hypersensitivity to the active substance or to any of the excipients; children under 18 years of age; therapy with concomitant monoamine oxidase inhibitor (MAOI), tricyclic or tetracyclic antidepressants, which affect noradrenergic transmission.

4.4 Special Warnings and Precautions for Use

A definite diagnosis of rosacea should be made before treatment with Mirvaso is considered.
Mirvaso should not be applied on irritated skin (including following laser therapy) or open wounds.
If severe irritation or contact allergy occurs, treatment with Mirvaso should be discontinued.
The concomitant use of systemic alpha adrenergic receptor agonists may potentiate the undesirable effects of this class of medicinal products and should be used with caution in patients:
with severe or unstable or uncontrolled cardiovascular disease;
with depression, cerebral or coronary insufficiency, Raynaud's phenomenon, orthostatic hypotension, thrombangiitis obliterans, scleroderma, or Sjogren's syndrome.
This product is not for use in the paediatric population. Keep out of reach of children.
Exacerbation of rosacea symptoms was reported in patients treated with Mirvaso. Treatment should be initiated with a small amount of gel and the dose increased gradually, based on tolerability and response to treatment.
The medicinal product contains methyl hydroxybenzoate (E218) which may cause allergic reactions (possibly delayed), and propylene glycol which may cause skin irritation.

Erythema and flushing.

Some subjects in the clinical trials discontinued use of Mirvaso topical gel because of erythema or flushing.
The effect of Mirvaso topical gel begins to diminish hours after application. In some patients, erythema and flushing were reported to return with greater severity than was present at baseline. Most of the cases were observed within the first 2 weeks of starting the treatment (see Section 4.8 Adverse Effects (Undesirable Effects)).
Intermittent flushing occurred in some patients treated with Mirvaso topical gel.
The onset of flushing relative to application of Mirvaso topical gel varied, ranging from approximately 30 minutes to several hours (see Section 4.8 Adverse Effects (Undesirable Effects)). In the majority of these cases, erythema and flushing resolved after discontinuation of Mirvaso topical gel.
In case worsening of erythema occurs, Mirvaso topical gel should be discontinued. Symptomatic measures, such as cooling, NSAID and antihistamines, may help in alleviating symptoms.
Recurrences of aggravated erythema and flushing have been reported after re-administration of Mirvaso topical gel. Prior to resuming treatment after temporary discontinuation due to aggravated erythema or flushing, perform a test application on a small area of the face for at least one day before full facial application is resumed.
It is important to inform the patient not to exceed the recommended maximum dose (5 pea sized amounts) and frequency of application: once daily use in a thin layer. Mirvaso should not be applied close to the eyes.
Any increase in the daily amount applied and/or frequency of daily application of Mirvaso should be avoided, since the safety of higher daily doses or repeated daily application has not been assessed.

Phototoxicity.

There were no studies investigating the safety and efficacy of Mirvaso in rosacea patients exposed to high levels of ultraviolet sun exposure. It is not known as to whether phototoxicity reactions may occur under these circumstances. Therefore, it is recommended that patients are advised to avoid excessive exposure to sunlight and UV light. Sunscreen may be applied after the application of Mirvaso (see Section 4.2 Dosage and Method of Administration).

Use in hepatic impairment.

Mirvaso has not been studied in patients with hepatic impairment, thus use caution with these patients.

Use in renal impairment.

Mirvaso has not been studied in patients with renal impairment, thus use caution with these patients.

Use in the elderly.

The experience of use of Mirvaso in patients aged above 65 years is limited. Therefore, caution should be exercised in the elderly. One hundred and four elderly patients (> 65 years of age) were included in Phase 3 clinical trials with Mirvaso gel. No overall differences in safety or effectiveness have been observed between elderly and other adult patients.

Paediatric use.

The safety and efficacy of Mirvaso in children aged less than 18 years have not been established. Mirvaso should not be used in children aged less than 2 years because of serious systemic risk. Safety concerns related to systemic absorption of brimonidine have also been identified for the age group 2 to 12 years (see Section 4.9 Overdose).
Mirvaso should not be used in children or adolescents aged 2 to 18 years.

4.5 Interactions with Other Medicines and Other Forms of Interactions

No interaction studies have been performed.
Monoamine oxidase (MAO) inhibitors may interfere with the metabolism of brimonidine and potentially result in an increased systematic side effect such as hypotension.
Mirvaso is contraindicated in patients receiving monoamine oxidase (MAO) inhibitor therapy (for example selegiline or moclobemide) and patients on tricyclic (such as imipramine) or tetracyclic (such as maprotiline, mianserin or mirtazapine) antidepressants which affect noradrenergic transmission (see Section 4.3 Contraindications).
Brimonidine can also interact with tricyclic and tetracyclic antidepressants affecting the metabolism and uptake of circulating amines. It is not known whether the concurrent use of these agents with Mirvaso in humans can lead to resulting interference with the vasoconstrictive effect.
Although specific drug-drug interactions studies have not been conducted with Mirvaso, the possibility of an additive or potentiating effect with central nervous system depressants (alcohol, barbiturates, opiates, sedatives, or anaesthetics) should be considered.
No data on the level of circulating catecholamines after Mirvaso administration are available. Thus, caution is advised in patients taking medications which can affect the metabolism and uptake of circulating amines (e.g. chlorpromazine, methylphenidate, reserpine).
Brimonidine may cause clinically insignificant decreases in blood pressure in some patients. Caution is therefore advised when using medicinal products such as anti-hypertensives and/or cardiac glycosides concomitantly with brimonidine.
Caution is advised when initiating (or changing the dose of) a concomitant systemic substance (irrespective of pharmaceutical form) which may interact with alpha-adrenergic receptor agonist or interfere with their activity, i.e. agonists or antagonists of the adrenergic receptor, e.g. (isoprenaline, prazosin).

4.6 Fertility, Pregnancy and Lactation

Effects on fertility.

Brimonidine did not have a significant effect on fertility in rats at oral doses of up to 0.66 mg/kg/day.
(Category B3)
There are no adequate and well-controlled studies with the use of Mirvaso gel in pregnant women. In rats, the drug crosses the placenta and enters the foetal circulation. Because animal reproduction studies are not always predictive of human response, Mirvaso gel should be used during pregnancy only if the potential benefit to the mother justifies the potential risk to the foetus. In pregnant rats, brimonidine was associated with maternotoxicity and increased early resorptions/post-implantation losses and decreased pup viability and body weights at estimated exposures (based on AUC) of 180 times the expected exposures in humans treated therapeutically. The drug was also maternotoxic in rabbits and caused abortions at exposures about 12 times greater than those expected in humans. In both rats and rabbits, brimonidine was not teratogenic.
It is not known whether brimonidine tartrate is excreted in human milk, although in animal studies, brimonidine tartrate and some of its metabolites have been shown to be excreted in milk of lactating rats. In the absence of human data, Mirvaso gel should not be used during breast-feeding. Because of the potential for serious adverse reactions from Mirvaso gel in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

4.7 Effects on Ability to Drive and Use Machines

No specific studies on the effects of Mirvaso on the ability to drive and use machinery have been performed, however, no cases of fatigue and/or drowsiness were reported with Mirvaso during clinical trials. In addition, given the pharmacology and pharmacokinetics demonstrated with Mirvaso gel, negligible or no impact on driving and using machinery is expected when Mirvaso is used as recommended.

4.8 Adverse Effects (Undesirable Effects)

Overall, Mirvaso gel was shown to be well tolerated, with the most commonly (i.e. ≥ 1%) reported adverse drug reactions being erythema, pruritus, flushing and skin burning sensation, all occurring in 1.2 to 3.3% of patients. Adverse reactions were usually transient, mild to moderate in severity, and usually did not require discontinuation of treatment.
No meaningful differences in the safety profiles were observed between elderly subject population and subjects 18 to 65 years of age.
Rosacea was also experienced at a common frequency rate.

Erythema and flushing.

Some subjects in the clinical trials discontinued use of Mirvaso topical gel because of erythema or flushing. The effect of Mirvaso topical gel may begin to diminish hours after application. For some subjects in the clinical trials, erythema was reported to return with a severity greater than at baseline; this occurred even several hours after application.
Intermittent flushing occurred in some subjects treated with Mirvaso topical gel. The onset of flushing relative to the application of Mirvaso topical gel varied ranging from approximately 30 minutes to several hours. Aggravated erythema, flushing, skin burning sensation and application site pallor have been reported during the post-marketing period (see Section 4.4 Special Warnings and Precautions for Use).
Erythema and flushing appeared to resolve after discontinuation of Mirvaso topical gel.

Adverse effects.

Adverse effects that occurred in at least 1% of subjects treated with Mirvaso topical gel once daily for 29 days are presented in Table 1.

Open-label, long-term study.

An open-label study of Mirvaso topical gel when applied once daily for up to one year was conducted in subjects with persistent (non-transient) facial erythema of rosacea. Subjects were allowed to use other rosacea therapies. A total of 276 subjects applied Mirvaso topical gel for at least one year. The most common adverse events (≥ 4% of subjects) for the entire study were flushing (10%), erythema (8%), rosacea (5%), nasopharyngitis (5%), skin burning sensation (4%), increased intraocular pressure (4%), and headache (4%).

Allergic contact dermatitis.

Allergic contact dermatitis to Mirvaso topical gel was reported in approximately 1% of subjects across the clinical development program. Two subjects underwent patch testing with individual product ingredients. One subject was found to be sensitive to brimonidine tartrate, and one subject was sensitive to phenoxyethanol (a preservative).

Post-marketing experience.

Adverse reactions reported during post-marketing period include:
aggravated erythema, flushing, skin burning sensation and rosacea reported with a common frequency during post-marketing period;
swelling of the face, urticaria and dizziness, reported with an uncommon frequency during the post-marketing period;
hypotension, angioedema and bradycardia, reported with a rare frequency during the post-marketing period.

Vascular disorders.

Pallor or excessive whitening at the application site.

Reporting suspected adverse effects.

Reporting suspected adverse reactions after registration of the medicinal product is important. It allows continued monitoring of the benefit-risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions at www.tga.gov.au/reporting-problems.

4.9 Overdose

No information is available on overdose in adults with Mirvaso. However, serious adverse effects following inadvertent ingestion of Mirvaso by two young children of one clinical study subject have been reported. The children experienced symptoms consistent with previously reported oral overdoses of α2-agonist in young children. Both children were reported to have made a full recovery within 24 hours.
Oral overdoses of other α2-agonists have been reported to cause symptoms such as hypotension, asthenia, vomiting, lethargy, sedation, bradycardia, arrhythmias, miosis, apnoea, hypotonia, hypothermia, respiratory depression and seizure.
Treatment of an oral overdose includes supportive and symptomatic therapy; a patent airway should be maintained. In the event of accidental application to the eyes, flush with a topical ocular irrigant.
For information on the management of overdose, contact the Poisons Information Centre on 131 126 (Australia).

5 Pharmacological Properties

5.1 Pharmacodynamic Properties

The pharmacodynamics (PD) of Mirvaso have been primarily undertaken in Caucasian subjects and the effect of race or gender on the PD is unknown.

Mechanism of action.

Brimonidine is a selective α2-adrenergic receptor agonist that is 1000-fold more selective for the α2-adrenergic receptor than the α1-adrenergic receptor.
Topical facial application of a highly selective α2-adrenergic receptor agonist is intended to reduce erythema through direct cutaneous vasoconstriction.

Clinical trials.

The efficacy of Mirvaso in the treatment of moderate to severe facial erythema of rosacea has been demonstrated in two randomised, vehicle controlled clinical trials, which were identical in design. The studies were conducted in 553 subjects aged 18 years and older who were treated once daily for 4 weeks with either Mirvaso or vehicle. Of these, 539 were included in the efficacy analysis at day 29. Overall, 99% of subjects were Caucasian and 76% were female. Baseline disease severity was graded using a 5 point Clinical Erythema Assessment (CEA) scale and a 5 point Patient Self Assessment (PSA) scale, on which subjects scored either "moderate" or "severe" on both scales.
The primary efficacy endpoint in both pivotal trials was 2 grade composite success, defined as the proportion of subjects with a 2 grade improvement on both CEA and PSA measured at hours 3, 6, 9, and 12 on day 29.
The results from the pivotal clinical studies were consistent, demonstrating that Mirvaso was significantly more effective (p < 0.001) in the reduction of facial erythema of rosacea than vehicle gel when applied once daily for 29 days. With respect to the primary endpoint of the pivotal studies (2 grade composite success defined as 2 grade improvement on both validated measures of the Clinician Erythema Assessment (CEA) and Patient Self Assessment (PSA) at hours 3, 6, 9, and 12 on day 29), once daily treatment with Mirvaso resulted in significantly greater success (17.6% to 31.5%; p < 0.001) compared to vehicle treatment (8.6% to 10.9%). Therefore, Mirvaso was also demonstrated to be 3-4 times more effective than vehicle after 1 month of treatment (2 grade composite success at day 29, see Table 2). In addition, treatment with Mirvaso had a rapid effect compared to vehicle gel (as per defined secondary endpoint of 1 grade composite success for CEA and PSA at 30 minutes on day 1, p < 0.001), with sustained efficacy over at least 12 h (1 grade composite success for CEA and PSA at hours 3, 6, 9, and 12 on day 29, see Table 3).
These studies demonstrate that following a once daily application of Mirvaso, the typical daily pattern is rapid onset (in as little as 30 minutes) of noticeable reduction in erythema after the very first application, followed by a sustained peak therapeutic effect over several hours, with a visible therapeutic effect being maintained throughout the day.
No consistent relationship was observed between concentration of brimonidine gel formulations used or resulting systemic drug levels throughout the clinical development programme, and adverse reactions. Further, no tachyphylaxis or rebound effects (worsening of baseline erythema after cessation of treatment) were observed with use of Mirvaso for 29 days. In addition, subjects using Mirvaso concomitantly with other medications for the treatment of rosacea did not experience an increase of adverse reactions beyond that anticipated for each drug individually.
Concomitant use of Mirvaso with other medicinal products for the treatment of rosacea has not been systematically investigated. However, in the long-term open label study, the efficacy and safety of Mirvaso, as described above, was not affected by the concomitant use of cosmetics or other medicinal products (e.g. topical metronidazole, topical azelaic acid, and oral tetracyclines including low dose doxycycline) for the treatment of inflammatory lesions of rosacea in the relevant subpopulation (131/449 patients in the study who used concomitant rosacea medicinal product).

5.2 Pharmacokinetic Properties

The pharmacokinetics (PK) of Mirvaso have been primarily undertaken in Caucasian subjects and the effect of race or gender on the PK is unknown.

Absorption and distribution.

The absorption of brimonidine from Mirvaso was evaluated in a relative bioavailability study in 23 adults with facial erythema of rosacea. All enrolled patients received 1 drop every 8 hours of a brimonidine 0.2% eye drops solution for 24 hours, followed by a once daily cutaneous application of the maximal quantity (1 g) of Mirvaso for 29 days (intra-individual comparison of systemic exposure). After repeated cutaneous application of Mirvaso on facial skin, no drug accumulation in plasma was observed throughout the treatment duration: the highest mean (± standard deviation) plasma maximum concentration (Cmax) and area under the concentration-time curve from 0 to 24 hours (AUC0-24hr) were 46 ± 62 picogram/mL and 417 ± 264 picogram.hr/mL respectively. These levels are comparable to those obtained in patients treated with a 0.2% eye drops solution of brimonidine.

Metabolism.

Brimonidine is extensively metabolised by the liver.

Excretion.

Urinary excretion is the major route of elimination of brimonidine and its metabolites.

5.3 Preclinical Safety Data

Genotoxicity.

Brimonidine tartrate was not genotoxic in assays for chromosomal damage (Chinese hamster cells in vitro, in vivo bone marrow cytogenetic assay and a dominant lethal assay). In assays for gene mutations in S. typhimurium and E. coli, brimonidine gave a positive response in one S. typhimurium strain without metabolic activation; other strains gave negative results. Brimonidine is not considered to pose a genotoxic hazard to patients.

Carcinogenicity.

Brimonidine did not induce compound-related carcinogenic effects in either mice or rats in life span dietary studies.
Brimonidine gel was not carcinogenic in rats after dermal application for up to 2-years at up to 5.4 mg/kg/day and 21.6 mg/kg/day in male and female rats, respectively, corresponding to systemic exposures (based on plasma AUC) representing 516- and 2566-fold the maximal human exposure in males and females, respectively. Brimonidine gel was not photo(co)carcinogenic in hairless mice with concomitant UV irradiation.

6 Pharmaceutical Particulars

6.1 List of Excipients

Carbomer 934P, methyl hydroxybenzoate (E218) phenoxyethanol; glycerol; titanium dioxide; propylene glycol; sodium hydroxide; purified water.
See Section 2 Qualitative and Quantitative Composition.

6.2 Incompatibilities

Incompatibilities were either not assessed or not identified as part of the registration of this medicine.

6.3 Shelf Life

In Australia, information on the shelf life can be found on the public summary of the Australian Register of Therapeutic Goods (ARTG). The expiry date can be found on the packaging.

6.4 Special Precautions for Storage

Store below 25°C.
Do not refrigerate below 2°C.

6.5 Nature and Contents of Container

Pack sizes.

2 g (Physician's sample), 10 g and 30 g.

2 g (sample pack).

Polyethylene (PE)/Aluminium (Al)/ Polyethylene (PE) laminated plastic tubes with a high density polyethylene (HDPE) head and polypropylene (PP) closure;

10 g and 30 g (trade packs).

Polyethylene (PE)/Aluminium (Al)/ Polyethylene (PE) laminated plastic tubes with a high density polyethylene (HDPE) head and polypropylene (PP) child resistant closure; or

2 g (sample pack).

Polyethylene (PE)/Copolymer/Aluminium (Al)/Copolymer/Polyethylene (PE) polyfoil plastic tubes (kind of laminate) with a high density polyethylene (HDPE) head and polyethylene (PE) child resistant closure;

10 g and 30 g (trade packs).

Polyethylene (PE)/Copolymer/Aluminium (Al)/Copolymer/Polyethylene (PE) polyfoil plastic tubes (kind of laminate) with a high density polyethylene (HDPE) head and polypropylene (PP) child resistant closure.
Not all pack sizes may be marketed.

6.6 Special Precautions for Disposal

In Australia, any unused medicine or waste material should be disposed of in accordance with local requirements.

6.7 Physicochemical Properties

Chemical structure.


CAS number.

70359-46-5.
Chemical names: 5-bromo-N-(4,5-dihydro-1H-imidazol-2-yl)-6-quinoxalinamine L-(+)-tartrate; 5-bromo-6-(2-imidazolin-2-ylamino)quinoxaline L-(+)-tartrate.
Molecular formula: C11H10BrN5.C4H6O6.
Molecular weight: 442.2 as the tartrate salt.

7 Medicine Schedule (Poisons Standard)

S4 - Prescription medicine.

Summary Table of Changes