Co-altria Montelukast / Levocetirizine 10mg / 5mg Tablet 30's
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Dosage/Direction for Use
Elderly: Dosages in the elderly should be adjusted in accordance with their renal function (see Patients with Renal Impairment as follows).
Patients with Renal Impairment: In adults and children 12 years of age and older with: Mild renal impairment (ClCr 50-80 mL/min): one tablet containing Montelukast 10 mg plus Levocetirizine 2.5 mg once daily.
Moderate renal impairment (ClCr 30-50 mL/min): one tablet containing Montelukast 10 mg plus Levocetirizine 2.5 mg once daily, every other day.
Patients with hepatic disease: No dosage adjustment is needed in patients solely with mild to moderate hepatic impairment. Usage is not recommended in patients with severe hepatic impairment.
Adolescents: Children aged 15+: one tablet containing 10 mg Montelukast and Levocetirizine 5 mg once daily.
Or as prescribed by the physician.
Co-Altria Ped: Patients with hepatic disease: No dosage adjustment is needed in patients solely with mild to moderate hepatic impairment. Usage is not recommended in patients with severe hepatic impairment.
Children and Adolescents: Children aged 6-14: one chewable tablet containing 5 mg Montelukast and 2.5 mg Levocetirizine or 5 mg Montelukast and 5 mg Levocetirizine once daily Or as prescribed by the physician.
Co-Altria: MONTELUKAST PLUS LEVOCETIRIZINE is contraindicated during women who are pregnant or breastfeeding.
Use In Pregnancy & Lactation
Digestive System Disorders: Dyspepsia M (2.1%), P (1.1%). Infectious gastroenteritis: M (2.1%), P (1.1%). Dental Pain: M (1.7%), P (1.0%).
Nervous System/Psychiatric: Dizziness M (1.9%), P (1.4%). Headache: M (18.4%), P (18.1%).
Respiratory System Disorders: Congestion, nasal M (1.6%), P (1.3%). Cough M (2.7%), P (2.4%). Influenza: M (4.2%), P (3.9%).
Skin/Skin Appendages Disorder: Rash M (1.6%), P (1.2%).
Laboratory Adverse Experiences:* ALT increased M (2.1%), P (2.0%). AST increased M (1.6%), P (1.2%). Pyuria: M (1.0%), P (0.9%).
Levocetirizine: In therapeutic studies in women and men aged 12 to 71 years, 15.1% of the patients in the Levocetirizine 5 mg group had at least one adverse drug reaction compared to 11.3% in the placebo group. 91.6 % of these adverse drug reactions were mild to moderate.
In therapeutic trials, the drop out rate due to adverse events was 1.0% (9/935) with Levocetirizine 5 mg and 1.8% (14/771) with placebo. Clinical therapeutic trials with Levocetirizine included 935 subjects exposed to the drug at the recommended dose of 5 mg daily. From this data, the following adverse drug reactions were reported at rates of 1 % or greater during treatment with Levocetirizine 5 mg (L) or placebo (P): Headache: L (2.6%), P (3.2%).
Somnolence: L (5.2%), P (1.4%).
Dry Mouth: L (2.6%), P (1.6%).
Fatigue: L (2.5%), P (1.2%).
Further uncommon incidences of adverse reactions like asthenia or abdominal pain were observed. The incidence of sedating adverse drug reactions such as somnolence, fatigue, and asthenia was altogether more common (8.1 %) with Levocetirizine 5 mg than with placebo (3.1%). In addition to the adverse reactions reported during clinical studies and listed previously, very rare cases of the following adverse drug reactions have been reported in post-marketing experience: Immune system disorders: hypersensitivity including anaphylaxis.
Psychiatric disorders: aggression, agitation.
Nervous system disorders: convulsion.
Eye disorders: visual disturbances.
Cardiac disorders: palpitations.
Respiratory, thoracic, and mediastinal disorders: dyspnea.
Gastrointestinal disorders: nausea.
Hepatobiliary disorders: hepatitis.
Skin and subcutaneous tissue disorders: angioneurotic edema, fixed drug eruption, pruritus, rash, urticaria.
Musculoskeletal, connective tissues, and bone disorders: myalgia.
Investigations: weight gain, abnormal liver function tests.
Levocetirizine: In vitro data indicate that levocetirizine is unlikely to produce pharmacokinetic interactions through inhibition or induction of liver drug-metabolizing enzymes. No in-vivo drug-drug interaction studies have been performed with Levocetirizine. In pharmacokinetic interaction studies performed with racemic cetirizine, cetirizine did not interact with antipyrine, pseudoephedrine, erythromycin, azithromycin, ketoconazole or cimetidine. A small decrease in the clearance of cetirizine was caused by a 400 mg dose of theophylline. Ritonavir increased the plasma AUC, half life and decreased the clearance 42%, 53% and 29% respectively. The disposition of ritonavir was not altered by administration of cetirizine.
Co-Altria: Protect from light.
Co-Altria Ped: 5 mg/5 mg: Each chewable tablet contains: Montelukast (as sodium) 5 mg, Levocetirizine dihydrochloride 5 mg.
5 mg/2.5 mg: Each chewable tablet contains: Montelukast (as sodium) 5 mg, Levocetirizine dihydrochloride 2.5 mg.
Levocetirizine: Levocetirizine, the active enantiomer of cetirizine, is anti-histamine. Its principal effects are mediated via selective inhibition of H1 receptors. The antihistamine activity of Levocetirizine has been documented in a variety of animal and human models.
Pharmacokinetics: Montelukast: Absorption: Montelukast is rapidly 2 to 4 hours absorbed following oral administration. Mean peak plasma concentration (Cmax) is achieved 3 hours (Tmax) after administration of a 10 mg dose in adults in the fasted state. The mean oral bioavailability is 64%. The oral bioavailability and Cmax are not influenced by a standard meal. Safety and efficacy were demonstrated in clinical trials where the 10-mg film-coated tablet was administered without regard to the timing of food ingestion. Cmax is achieved in 2 hours after administration of the 5 mg chewable tablet in adults in the fasted state. The mean oral bioavailability is 73% and is decreased to 63% by a standard meal.
Distribution: Montelukast is more than 99% bound to plasma proteins. Steady-state volume of distribution of Montelukast averages 8-11 liters. Studies in rats with radio labeled Montelukast indicate minimal distribution across the blood-brain barrier. In addition, concentrations of radio labeled material at 24 hours post dose were minimal in all other tissues.
Metabolism: Montelukast is extensively metabolized. In studies with therapeutic doses, plasma concentrations of metabolites of Montelukast are undetectable at steady state in adults and children. In vitro studies using human liver microsomes indicate that cytochrome P450 3A4, 2A6 and 2C9 are involved in the metabolism of Montelukast. Based on further in vitro results in human liver microsomes, therapeutic plasma concentrations of Montelukast do not inhibit cytochromes P450 3A4, 2C9, 1A2, 2A6, 2C19, or 2D6. The contribution of metabolites to the therapeutic effect of montelukast is minimal.
Elimination: The plasma clearance of Montelukast averages 45 mL/min in healthy adults. Following an oral dose of radio labeled Montelukast, 86% of the radioactivity was recovered in 5-day fecal collections and <0.2% was recovered in urine. Coupled with estimates of Montelukast oral bioavailability, this indicates that Montelukast and its metabolites are excreted almost exclusively via the bile.
Patients with Hepatic Impairment: Patients with mild-to-moderate hepatic insufficiency and clinical evidence of cirrhosis had evidence of decreased metabolism of Montelukast resulting in 41% (90% CI=7%, 85%) higher mean Montelukast area under the plasma concentration curve (AUC) following a single 10-mg dose. The elimination of Montelukast was slightly prolonged compared with that in healthy subjects (mean half-life, 7.4 hours). No dosage adjustment is required in patients with mild-to-moderate hepatic insufficiency. The pharmacokinetics of Montelukast in patients with more severe hepatic impairment or with hepatitis has not been evaluated.
Co-Altria: Elderly: The pharmacokinetic profile and the oral bioavailability of a single 10-mg oral dose of Montelukast are similar in elderly and younger adults. The plasma half-life of Montelukast is slightly longer in the elderly. Due to the Levocetirizine component of Montelukast plus Levocetirizine however, dosage adjustment may be required in elderly patients (See Elderly under Dosage & Administration).
Patients with Renal Impairment: Since Montelukast and its metabolites are not excreted in the urine, the pharmacokinetics of Montelukast was not evaluated in patients with renal insufficiency. Due to the Levocetirizine component of MONTELUKAST PLUS LEVOCETIRIZINE however, dosage adjustment is required in patients with renal impairment (See Patients with Renal Impairment under Dosage & Administration).
Levocetirizine: Absorption: Levocetirizine is rapidly and extensively absorbed following oral administration. Peak plasma concentrations are achieved 0.9 h after dosing. Steady state is achieved after two days. Peak concentrations are 270 ng/mL and 308 ng/mL following a single and a repeated 5 mg dose once daily, respectively. The extent of absorption is dose-independent and is not altered by food, but the peak concentration is reduced and delayed.
Distribution: No tissue distribution data are available in humans, neither concerning the passage of Levocetirizine through the blood-brain-barrier. In rats and dogs, the highest tissue levels are found in liver and kidneys, the lowest in the CNS compartment. Levocetirizine is 90% bound to plasma proteins. The distribution of Levocetirizine is restrictive, as the volume of distribution is 0.4 L/kg.
Metabolism: The extent of metabolism of Levocetirizine in humans is less than 14% of the dose and therefore differences resulting from genetic polymorphism or concomitant intake of enzyme inhibitors are expected to be negligible. Metabolic pathways include aromatic oxidation, N- and O- dealkylation and taurine conjugation. Dealkylation pathways are primarily mediated by CYP 3A4 while aromatic oxidation involved multiple and/or unidentified CYP isoforms. Levocetirizine had no effect on the activities of CYP isoenzymes 1A2, 2C9, 2C19, 2D6, 2E1 and 3A4 at concentrations well above peak concentrations achieved following a 5 mg oral dose. Due to its low metabolism and absence of metabolic inhibition potential, the interaction of Levocetirizine with other substances, or vice-versa, is unlikely.
Elimination: The plasma half-life in adults is 7.9 ± 1.9 hours. The mean apparent total body clearance is 0.63 mL/min/kg. The major route of excretion of Levocetirizine and metabolites is via urine, accounting for a mean of 85.4% of the dose. Excretion via feces accounts for only 12.9% of the dose. Levocetirizine is excreted both by glomerular filtration and active tubular secretion.
Patients with Hepatic Impairment: Levocetirizine has not been studied in patients with hepatic impairment. The non-renal clearance (indicative of hepatic contribution) was found to constitute about 28% of the total body clearance in healthy adult subjects after oral administration. As Levocetirizine is mainly excreted unchanged by the kidney, it is unlikely that the clearance of Levocetirizine is significantly decreased in patients solely with hepatic impairment.
Children: In children 6-11 years of age, Cmax and AUC values are about 2-fold greater than normal healthy adults when given the same dose (5 mg once daily). Cmax occurred 1.2 hours post dose in children, total body clearance was 30% greater and the elimination half-life 24% shorter than adults.
Co-Altria: Elderly: Limited pharmacokinetic data is available in elderly subjects. Following once daily repeated oral administration of 30 mg Levocetirizine for 6 days in 9 elderly subjects (74-75 years of age), the total body clearance was approximately 33% lower compared to that in younger adults. The disposition of racemic cetirizine has been shown to be dependent on renal function rather than age. Therefore, the dosage of Levocetirizine should be adjusted in accordance with renal function in elderly patients.
Patients with Renal Impairment: The apparent body clearance of Levocetirizine is correlated to the creatinine clearance. It is therefore recommended to adjust the dosage and frequency of dosage of Levocetirizine, based on creatinine clearance in patients with moderate and severe renal impairment (see Dosage & Administration).