Zyflo CR and Zyrtec Capsule

• Generic Name: zileuton
• Dosage Forms: tablet, multilayer, extended release
• Other Brand Names: Zyflo, Zyflo CR

Zyflo CR is a leukotriene (loo-koe-TRY-een) inhibitor. Leukotrienes are chemicals your body releases when you breathe in an allergen (such as pollen). These chemicals cause swelling in your lungs and tightening of the muscles around your airways, which can result in asthma symptoms.

Zyflo CR is used to prevent asthma attacks in adults and children as young as 12 years old.

Zyflo CR may also be used for purposes not listed in this medication guide.

• Generic Name: cetirizine
• Dosage Forms: capsule, liquid filled
• Other Brand Names: Zyrtec, All Day Allergy, All Day Allergy Children's, Indoor/Outdoor Allergy Relief, Zyrtec, GoodSense All Day Allergy

Cetirizine is an antihistamine that reduces the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. It is used to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose.

Cetirizine is also used to treat itching and swelling caused by hives.

Cetirizine may also be used for other purposes not listed in this medication guide.