Xamiol

Calcipotriol, betamethasone.

Active ingredients: Calcipotriol 50 microgram/g (as hydrate), betamethasone 0.5 mg/g (as dipropionate).
Excipients/Inactive Ingredients: Liquid paraffin, Polyoxypropylene stearyl ether, hydrogenated castor oil.

Pharmacology: Pharmacodynamics: Calcipotriol is a vitamin D analogue. In vitro data suggest that calcipotriol induces differentiation and suppresses proliferation of keratinocytes. This is the proposed basis for its effect in psoriasis.
Like other topical corticosteroids, betamethasone dipropionate has anti-inflammatory, antipruritic, vasoconstrictive and immunosuppressive properties, however, without curing the underlying condition. Through occlusion the effect can be enhanced due to increased penetration of the stratum corneum.
The incidence of adverse events will increase because of this. In general, the mechanism of the anti-inflammatory activity of the topical steroids is unclear.
Adrenal response to ACTH was determined by measuring serum cortisol levels in patients with both extensive scalp and body psoriasis, using up to 106 g per week combined Xamiol Gel and Daivobet Ointment. A borderline decrease in cortisol response at 30 minutes post ACTH challenge was seen in 5 of 32 patients (15.6 %) after 4 weeks of treatment and in 2 of 11 patients (18.2 %) who continued treatment until 8 weeks. In all cases, the serum cortisol levels were normal at 60 minutes post ACTH challenge. There was no evidence of change of calcium metabolism observed in these patients. With regard to HPA suppression, therefore, this study shows some evidence that very high doses of Xamiol Gel and Daivobet Ointment may have a weak effect on the HPA axis.
The efficacy of once daily use of Xamiol Gel was investigated in two randomised, double-blind, 8-week clinical studies including a total of more than 2,900 patients with scalp psoriasis of at least mild severity according to the Investigator's Global Assessment of disease severity (IGA). Comparators were betamethasone dipropionate in the gel vehicle, calcipotriol in the gel vehicle and (in one of the studies) the gel vehicle alone, all used once daily. Results for the primary response criterion (absent or very mild disease according to the IGA at week 8) showed that Xamiol Gel was statistically significantly more effective than the comparators. Results for speed of onset based on similar data at week 2 also showed Xamiol Gel to be statistically significantly more effective than the comparators. (See Table 1.)

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The efficacy of once daily use of Xamiol Gel on non-scalp regions of the body was investigated in a randomised, double-blind, 8-week clinical study including 296 patients with psoriasis vulgaris of mild or moderate severity according to the IGA. Comparators were betamethasone dipropionate in the gel vehicle, calcipotriol in the gel vehicle and the gel vehicle alone, all used once daily. Primary response criteria were controlled disease according to the IGA at week 4 and week 8. Controlled disease was defined as 'clear' or 'minimal disease' for patients with moderate disease at baseline or 'clear' for patients with mild disease at baseline. The percentage change in Psoriasis Severity and Area index (PASI) from baseline to week 4 and week 8 were secondary response criteria. (See Table 2 and Table 3.)

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Another randomised, investigator-blinded clinical study including 312 patients with scalp psoriasis of at least moderate severity according to the IGA investigated use of Xamiol Gel once daily compared with Daivonex Scalp solution twice daily for up to 8 weeks. Results for the primary response criterion (absent or very mild disease according to the IGA at week 8) showed that Xamiol Gel was statistically significantly more effective than Daivonex Scalp solution. (See Table 4.)

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A randomised, double-blind long-term clinical study including 873 patients with scalp psoriasis of at least moderate severity (according to the IGA) investigated the use of Xamiol Gel compared with calcipotriol in the gel vehicle. Both treatments were applied once daily, intermittently as required, for up to 52 weeks. Adverse events possibly related to long-term use of corticosteroids on the scalp, were identified by an independent, blinded panel of dermatologists. There was no difference in the percentages of patients experiencing such adverse events between the treatment groups (2.6 % in the Xamiol Gel group and 3.0 % in the calcipotriol group; P=0.73). No cases of skin atrophy were reported.
Paediatric population: Effects on calcium metabolism were investigated in two uncontrolled open 8-week studies including in total 109 adolescents aged 12-17 years with scalp psoriasis who used up to 69 g per week of Xamiol Gel. No cases of hypercalcaemia and no clinically relevant changes in urinary calcium were reported. The adrenal response to ACTH challenge was measured in 30 patients; one patient showed a decrease in cortisol response to ACTH challenge after 4 weeks of treatment, which was mild, without clinical manifestations, and reversible.
Pharmacokinetics: The systemic exposure to calcipotriol and betamethasone dipropionate from topically applied Xamiol Gel is comparable to Daivobet Ointment in rats and minipigs. Clinical studies with radiolabelled ointment indicate that the systemic absorption of calcipotriol and betamethasone from Daivobet Ointment formulation is less than 1% of the dose (2.5 g) when applied to normal skin (625 cm²) for 12 hours. Application to psoriasis plaques and under occlusive dressings may increase the absorption of topical corticosteroids.
Following systemic exposure, both active ingredients: calcipotriol and betamethasone dipropionate: are rapidly and extensively metabolised. The main route of excretion of calcipotriol is via faeces (rats and minipigs) and for betamethasone dipropionate it is via urine (rats and mice).
Calcipotriol and betamethasone dipropionate were below the lower limit of quantification in all blood samples of 34 patients treated for 4 or 8 weeks with both Xamiol Gel and Daivobet Ointment for extensive psoriasis involving the body and scalp.
One metabolite of calcipotriol and one metabolite of betamethasone dipropionate were quantifiable in some of the patients.
Toxicology: Preclinical safety data: Studies of corticosteroids in animals have shown reproductive toxicity (cleft palate, skeletal malformations). In reproduction toxicity studies with long-term oral administration of corticosteroids to rats, prolonged gestation and prolonged and difficult labour were detected. Moreover, reduction in offspring survival, body weight and body weight gain was observed. There was no impairment of fertility. The relevance for humans is unknown.
A dermal carcinogenicity study with calcipotriol in mice and an oral carcinogenicity study in rats revealed no special risk to humans.
Photo(co)carcinogenicity studies in mice suggest that calcipotriol may enhance the effect of UVR to induce skin tumours.
A dermal carcinogenicity study in mice and an oral carcinogenicity study in rats revealed no special risk of betamethasone dipropionate to humans. No photocarcinogenicity study has been performed with betamethasone dipropionate.
In local tolerability studies in rabbits, Xamiol Gel caused mild to moderate skin irritation and a slight transient irritation of the eye.

Topical treatment of scalp and non-scalp plaque psoriasis vulgaris in adults.

Xamiol Gel should be applied to affected areas once daily. The recommended treatment period is 4 weeks for scalp areas and 8 weeks for "non-scalp" areas. If it is necessary to continue or restart treatment after this period, treatment should be continued after medical review and under regular medical supervision.
When using calcipotriol containing medicinal products, the maximum daily dose should not exceed 15 g. The body surface area treated with calcipotriol containing medicinal products should not exceed 30%.
If used on the scalp: All the affected scalp areas may be treated with Xamiol Gel. Usually an amount between 1 g and 4 g per day is sufficient for treatment of the scalp (4 g corresponds to one teaspoon).
Special Populations: Renal and hepatic impairment: The safety and efficacy of Xamiol Gel in patients with severe renal insufficiency or severe hepatic disorders have not been evaluated.
Paediatric population: The safety and efficacy of Xamiol Gel in children below 18 years have not been established.
Currently available data in children aged 12 to 17 years are described in Adverse Reactions and Pharmacodynamics, but no recommendation on a posology can be made.
Method of administration: Xamiol Gel should not be applied directly to the face or eyes. In order to achieve optimal effect, it is not recommended to take a shower or bath, or to wash the hair in case of scalp application, immediately after application of Xamiol Gel. Xamiol Gel should remain on the skin during the night or during the day.
When using the bottle: The bottle should be shaken before use and Xamiol Gel applied to the affected area. The hands should be washed after use.

Use above the recommended dose may cause elevated serum calcium which subsides when treatment is discontinued. The symptoms of hypercalcemia include polyuria, constipation, muscle weakness, confusion and coma.
Excessive prolonged use of topical corticosteroids may suppress the pituitary-adrenal functions, resulting in secondary adrenal insufficiency which is usually reversible. In such cases, symptomatic treatment is indicated.
In case of chronic toxicity, the corticosteroid treatment must be discontinued gradually.
It has been reported that due to misuse one patient with extensive erythrodermic psoriasis treated with 240 g of Daivobet Ointment weekly (corresponding to a daily dose of approximately 34g) for 5 months (maximum recommended dose 15g daily) developed Cushing's syndrome during treatment and then pustular psoriasis after abruptly stopping treatment.

Hypersensitivity to the active substances or to any of the excipients.
Due to the content of calcipotriol, Xamiol Gel is contraindicated in patients with known disorders of calcium metabolism.
Due to the content of corticosteroid, Xamiol Gel is contraindicated in the following conditions: Viral (e.g. herpes or varicella) lesions of the skin, fungal or bacterial skin infections, parasitic infections, skin manifestations in relation to tuberculosis, perioral dermatitis, atrophic skin, striae atrophicae, fragility of skin veins, ichthyosis, acne vulgaris, acne rosacea, rosacea, ulcers and wounds.
Xamiol Gel is contraindicated in erythrodermic, exfoliative and pustular psoriasis.

Effects on endocrine system: Adverse reactions found in connection with systemic corticosteroid treatment, such as adrenocortical suppression or impact on the metabolic control of diabetes mellitus may occur also during topical corticosteroid treatment due to systemic absorption.
Application under occlusive dressings should be avoided since it increases the systemic absorption of corticosteroids. Application on large areas of damaged skin, or on mucous membranes or in skin folds should be avoided since it increases the systemic absorption of corticosteroids.
In a study in patients with both extensive scalp and extensive body psoriasis using a combination of high doses of Xamiol Gel (scalp application) and high doses of Daivobet Ointment (body application), 5 of 32 patients showed a borderline decrease in cortisol response to adrenocorticotropic hormone (ACTH) challenge after 4 weeks of treatment.
Effects on calcium metabolism: Due to the content of calcipotriol, hypercalcaemia may occur if the maximum daily dose (15g) is exceeded. Serum calcium is normalised when treatment is discontinued. The risk of hypercalcaemia is minimal when the recommendations relevant to calcipotriol are followed.
Local adverse reactions: Xamiol Gel contains a potent group III-steroid and concurrent treatment with other steroids must be avoided.
Skin of the face and genitals are very sensitive to corticosteroids. The medicinal product should not be used in these areas.
The patient must be instructed in correct use of the product to avoid application and accidental transfer to the face, mouth and eyes.
Hands must be washed after each application to avoid accidental transfer to these areas.
Concomitant skin infections: When lesions become secondarily infected, they should be treated with antimicrobiological therapy. However, if infection worsens, treatment with corticosteroids should be stopped.
Discontinuation of treatment: When treating psoriasis with topical corticosteroids, there may be a risk of generalised pustular psoriasis or of rebound effects when discontinuing treatment.
Medical supervision should therefore continue in the post-treatment period.
Long-term use: With long-term use there is an increased risk of local and systemic corticosteroid adverse reactions. The treatment should be discontinued in case of adverse reactions related to long-term use of corticosteroid.
Unevaluated use: There is no experience with the use of Xamiol Gel in guttate psoriasis.
Concurrent treatment and UV exposure: Daivobet Ointment for body psoriasis lesions has been used in combination with Xamiol Gel for scalp psoriasis lesions but there is limited experience of combination of Xamiol with other topical anti-psoriatic products at the same treatment area, other antipsoriatic medicinal products administered systemically or with phototherapy.
During Xamiol Gel treatment, physicians are recommended to advise patients to limit or avoid excessive exposure to either natural or artificial sunlight. Topical calcipotriol should be used with UVR only if the physician and patient consider that the potential benefits outweigh the potential risks.
Adverse reactions to excipients: Xamiol Gel contains butylated hydroxytoluene (E321) as an excipient, which may cause local skin reactions (e.g. contact dermatitis), or irritation to the eyes and mucous membranes.
Effects on ability to drive and use machines: Xamiol Gel has no or negligible influence on the ability to drive and use machines.

Pregnancy: There are no adequate data from the use of Xamiol Gel in pregnant women. Studies in animals with glucocorticoids have shown reproductive toxicity, but a number of epidemiological studies (less than 300 pregnancy outcomes) have not revealed congenital anomalies among infants born to women treated with corticosteroids during pregnancy. The potential risk for humans is uncertain. Therefore, during pregnancy, Xamiol Gel should only be used when the potential benefit justifies the potential risk.
Breastfeeding: Betamethasone passes into breast milk, but risk of an adverse effect on the infant seems unlikely with therapeutic doses. There are no data on the excretion of calcipotriol in breast milk. Caution should be exercised when prescribing Xamiol Gel to women who breast-feed. The patient should be instructed not to use Xamiol Gel on the breast when breastfeeding.
Fertility: Studies in rats with oral doses of calcipotriol or betamethasone dipropionate demonstrated no impairment of male and female fertility.

The estimation of the frequency of adverse reactions is based on a pooled analysis of data from clinical studies including post-authorisation safety studies and spontaneous reporting.
The most frequently reported adverse reaction during treatment is pruritus.
Adverse reactions are listed by MedDRA SOC and the individual adverse reactions are listed starting with the most frequently reported. Within each frequency grouping, adverse reactions are presented in the order of decreasing seriousness.
Very common ≥1/10, Common ≥1/100 to <1/10, Uncommon ≥1/1,000 to <1/100, Rare ≥1/10,000 to <1/1,000, Very rare <1/10,000. (See Table 5.)

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The following adverse reactions are considered to be related to the pharmacological classes of calcipotriol and betamethasone, respectively: Calcipotriol: Adverse reactions include application site reactions, pruritus, skin irritation, burning and stinging sensation, dry skin, erythema, rash, dermatitis, eczema, psoriasis aggravated, photosensitivity and hypersensitivity reactions including very rare cases of angioedema and facial oedema.
Systemic effects after topical use may appear very rarely causing hypercalcaemia or hypercalciuria.
Betamethasone (as dipropionate): Local reactions can occur after topical use, especially during prolonged application, including skin atrophy, telangiectasia, striae, folliculitis, hypertrichosis, perioral dermatitis, allergic contact dermatitis, depigmentation and colloid milia.
When treating psoriasis, there may be a risk of generalised pustular psoriasis.
Systemic reactions due to topical use of corticosteroids are rare in adults; however, they can be severe. Adrenocortical suppression, cataract, infections, impact on the metabolic control of diabetes mellitus and increase of intra-ocular pressure can occur, especially after long-term treatment.
Systemic reactions occur more frequently when applied under occlusion (plastic, skin folds), when applied on large areas and during long-term treatment.
Paediatric population: No new adverse events and no new adverse reactions were seen in 109 adolescents aged 12-17 years with scalp psoriasis treated with Xamiol Gel for 8 weeks. However, due to the size of the studies, no firm conclusion can be drawn as to the safety profile of Xamiol Gel in adolescents compared to that in adults.

No interaction studies have been performed with Xamiol Gel.

Incompatibilities: In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products.

Do not refrigerate. Keep the bottle in the outer carton in order to protect from light. Do not store above 30°C.
Shelf-Life: Unopened container: 2 years.
Discard 3 months after first opening.

Psoriasis, Seborrhea & Ichthyosis Preparations

D05AX52 - calcipotriol, combinations ; Belongs to the class of other antipsoriatics for topical use.

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