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Levocetirizine is in the drug class antihistamines.

Levocetirizine is used to treat the following conditions:

  • Allergic Rhinitis
  • Allergies
  • Urticaria

Montelukast is a member of the drug class leukotriene modifiers.

Montelukast is used to treat the following conditions:

  • Allergic Rhinitis
  • Asthma
  • Asthma, Maintenance
  • Bronchospasm Prophylaxis
  • COPD


Z CAST-L is used for the treatment, control, prevention, & improvement of the following diseases, conditions and symptoms:

Allergic rhinitis

Controller medication for asthma

Inflammation of the nose due to an allergy

Exercise-induced bronchospasm prevention

Chronic idiopathic urticaria




The following is a list of possible side-effects that may occur in medicines( Z CAST-L) that contain Montelukast Sodium / Levocetirizine Hydrochloride. This is not a comprehensive list. These side-effects are possible, but do not always occur. Some of the side-effects may be rare but serious.

Consult your doctor if you observe any of the following side-effects, especially if they do not go away.




Sore throat

Stomach pain


Runny or stuffy nose


Dry mouth



Precautions and contraindications:

Before using Montelukast Sodium / Levocetirizine Hydrochloride, inform your doctor about your current list of medications, over the counter products (e.g. vitamins, herbal supplements, etc.), allergies, pre-existing diseases, and current health conditions (e.g. pregnancy, upcoming surgery, etc.).

Dosage is based on your condition. Tell your doctor if your condition persists or worsens. Important counseling points are listed below.

Do not drive or operate machinery

Do not take 2 doses at a time

Consult doctor Pregnant, planning to get pregnant or breastfeeding

Hypersensitivity to Montelukast Sodium / Levocetirizine Hydrochloride is a contraindication. In addition, Montelukast Sodium / Levocetirizine Hydrochloride should not be used if you have the following conditions:



patients undergoing hemodialysis

pediatric patients with impaired renal function