Interactions : אינטראקציות

4.5 Interaction with other medicinal products and other forms of interaction

Since IgE may be involved in the immunological response to some helminth infections, omalizumab may indirectly reduce the efficacy of medicinal products for the treatment of helminthic or other parasitic infections (see section 4.4).

Cytochrome P450 enzymes, efflux pumps and protein-binding mechanisms are not involved in the clearance of omalizumab; thus, there is little potential for interactions. Medicinal product or vaccine interaction studies have not been performed with omalizumab. There is no pharmacological reason to expect that commonly prescribed medicinal products used in the treatment of asthma, CRSwNP or CSU will interact with omalizumab.



XOL_POW_API_FEB24 V4                                         Based on EU SmPC DEC23 Allergic asthma

In clinical studies omalizumab was commonly used in conjunction with inhaled and oral corticosteroids, inhaled short-acting and long-acting beta agonists, leukotriene modifiers, theophyllines and oral antihistamines. There was no indication that the safety of omalizumab was altered with these other commonly used anti-asthma medicinal products. Limited data are available on the use of omalizumab in combination with specific immunotherapy (hypo-sensitisation therapy). In a clinical trial where omalizumab was co-administered with immunotherapy, the safety and efficacy of omalizumab in combination with specific immunotherapy were found to be no different to that of omalizumab alone.

Chronic rhinosinusitis with nasal polyps (CRSwNP)

In clinical studies omalizumab was used in conjunction with intranasal mometasone spray as per protocol.
Other commonly used concomitant medicinal products included other intranasal corticosteroids, bronchodilators, antihistamines, leukotriene receptor antagonists, adrenergics/sympathomimetics and local nasal anaesthetics. There was no indication that the safety of omalizumab was altered by the concomitant use of these other commonly used medicinal products.

Chronic spontaneous urticaria (CSU)

In clinical studies in CSU, omalizumab was used in conjunction with antihistamines (anti-H1, anti-H2) and leukotriene receptor antagonists (LTRAs). There was no evidence that the safety of omalizumab was altered when used with these medicinal products relative to its known safety profile in allergic asthma. In addition, a population pharmacokinetic analysis showed no relevant effect of H2 antihistamines and LTRAs on omalizumab pharmacokinetics (see section 5.2).

Paediatric population

Clinical studies in CSU included some patients aged 12 to 17 years taking omalizumab in conjunction with antihistamines (anti-H1, anti-H2) and LTRAs. No studies have been performed in children under 12 years.