Indications for ZYFLO CR:
Prophylaxis and chronic treatment of asthma.
Swallow whole. Take within 1hr after morning and evening meals. 1200mg twice daily; max: 2400mg/day.
<12yrs: not recommended.
ZYFLO CR Contraindications:
Active liver disease. Persistent ALT elevations ≥3xULN.
ZYFLO CR Warnings/Precautions:
Not for primary treatment of acute attacks. Monitor liver function before initiating therapy, monthly for the 1st 3 months, every 2–3 months for the remainder of the year, and periodically thereafter (discontinue if signs/symptoms occur). History of liver disease. Alcohol consumption. Evaluate if neuropsychiatric events occur. Pregnancy (Cat.C). Nursing mothers: not recommended.
ZYFLO CR Classification:
ZYFLO CR Interactions:
Potentiates theophylline (reduce dose of theophylline by about ½). Potentiates warfarin, propranolol (possibly other β-blockers); monitor and adjust doses. Monitor concomitant CYP3A4 inhibitors (eg, ketoconazole).
Sinusitis, pharyngolaryngeal pain, abdominal pain, nausea, dyspepsia, headache, rash, hypersensitivity, hepatotoxicity, upper respiratory tract infection, myalgia; neuropsychiatric events (eg, sleep disorders, behavior changes).
Generic Drug Availability:
Tabs, CR tabs—120