Efficacy of Levocetirizine Fourfold Dosage in Chronic Spontaneous Urticaria (LEVURE PLUS)
Chronic Spontaneous Urticaria
About this trial
This is an interventional treatment trial for Chronic Spontaneous Urticaria focused on measuring Chronic spontaneous urticaria, Levocetirizine, H1-antihistamine, Fourfold dosage, Efficacy, Tolerance, UAS7 (Urticaria activity score), resistant
Eligibility Criteria
Inclusion Criteria:
- Subject must be ≥18 years of age at screening.
- Chronic spontaneous urticaria already treated with anti-H1 for at least two months without sufficient efficacy.
- Urticaria Activity Score (UAS7) >12 at the randomization visit (visit 2).
For female :
- Of childbearing potential: female must use an acceptable method of contraception during the period of 1 month before the inclusion to 1 month after the last study visit;
- Of non-childbearing potential: e.g. postmenopausal (absence of menstrual bleeding for 1 years), or having had a hysterectomy or bilateral ovariectomy or tubal ligation.
- Patient agrees not to take other treatments than those provided in the study.
- Willingness and ability to comply with the protocol requirements.
- Written informed consent given prior to any study-related procedure.
- Subject affiliated to the National Social Security System.
Exclusion Criteria:
- Pregnancy, breastfeeding or planned pregnancy during the study.
- Inducible urticaria (except immediate dermographism associated with CSU)
- Differential diagnosis of CSU (urticarial vasculitis).
- Known hypersensitivity to antihistamine.
- Known hypersensitivity to one of the product components, to hydroxyzine or to piperazine derivative.
- Sleepiness disorders or with Epworth sleepiness scale >15.
- Treatment with systemic corticosteroids within the month before the screening visit.
- Treatment with montelukast within the week before the screening visit.
- Treatment with H2-antihistamine within the week before the screening visit.
- Treatment with immunosuppressive drugs (e.g. methotrexate, cyclosporine, azathioprine, mycophenolate mofetil …) within the month before the screening visit.
- Known congenital galactosemia, glucose and galactose malabsorption, lactase deficiency, or lactose and fructose intolerance.
- Swallowing disorders.
- Liver dysfunction with transaminase greater than twice the normal value.
- Renal failure with creatinine clearance <50mL/min (calculated by MDRD formula).
- Regular or excessive alcohol consumption.
- Unstabilized chronic disease under treatment.
- Subject protected by the law (adult under guardianship, or hospitalized in a public or private institution for a reason other than the study, or incarcerated).
- Subject with any additional condition that, in the opinion of the investigator, may interfere with the study assessment or put the subject at risk.
- Linguistic or mentally incapacity to sign the consent form.
- Subject in an exclusion period from a previous study or who is participating in another clinical trial
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Active Comparator
Experimental
Group1 : Regulatory dosage
Group 2 : fourfold dosage
In a first time, every day, one tablet of 5 mg of levocetirizine is taken the morning and a second tablet of placebo is taken the evening, during 5 weeks (between visit 2 and 3). In a second time,and after primary endpoint assessment, every day, one tablet of 10 mg of levocetirizine is taken the morning and a second tablet of 10 mg of levocetirizine is taken the evening, during 5 weeks (between visit 3 and 4).
In a first time, every day, one tablet of 10 mg of levocetirizine is taken the morning and a second tablet of 10 mg of levocetirizine is taken the evening, during 5 weeks (between visit 2 and 3). In a second time, every day, one tablet of 5 mg of levocetirizine is taken the morning and a second tablet of placebo is taken the evening, during 5 weeks (between visit 3 and 4).