Salmeterol Xinafoate

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Inhaled Salmeterol exerts a significant bronchodilating effect within 10 to 20 minutes of single-dose administration with asthma and this effect lasts for up to 12 hours or more.Salmeterol has a beneficial effect on airway mucociliary clearance that will reduce the incidence of respiratory ... Read moreInhaled Salmeterol exerts a significant bronchodilating effect within 10 to 20 minutes of single-dose administration with asthma and this effect lasts for up to 12 hours or more.Salmeterol has a beneficial effect on airway mucociliary clearance that will reduce the incidence of respiratory tract infections.Salmeterol produces a significant protective effect against Exercise Induced Asthma (EIA) for up to 9 to 12 hours in both adolescents and adults.Salmeterol improves the overnight PEFR (Peak Expiratory Flow Rate) and controls the symptoms of the patients with nocturnal asthma. The use of Salmeterol avoids exposure of children to theophylline or high-dose corticosteroid, with their attendants risks. Addition of Salmeterol to inhaled corticosteroid therapy is significantly more effective in terms of an improvement in lung function, symptom control and a reduction in the use of rescue bronchodilator therapy (use of short acting beta2-agonist).Addition of Salmeterol to inhaled corticosteroid therapy also significantly reduces the use of inhaled corticosteroids

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Monotherapy in the treatment of asthma. Treatment of status asthmaticus, other acute episodes of asthma or COPD.

Salmeterol stimulates intracellular adenyl cyclase, the enzyme that catalyses the conversion of ATP to cyclic-3',5'-adenosine monophosphate (cAMP) resulting in relaxation of bronchial smooth muscle and inhibition of release of mediators of immediate hypersensitivity from mast cells.

As with all the other beta2-agonists there may be interaction with betablocking agents at the receptor site when given concomitantly. Monoamino Oxidase Inhibitors and Tricyclic Antidepressants : These agent should be used with caution because Salmeterol may be potentiated by these agents.

Dose related tremor, subjective palpitations and headaches are usually mild and transient. Skin reactions, muscle cramps, non-specific chest pain, local irritation and arthralgia have been reported.

Symptoms: Dizziness, HTN or hypotension, tremor, headache, tachycardia, hypokalaemia, seizures, angina, arrhythmias, nervousness, muscle cramps, dry mouth, palpitations, nausea, fatigue, malaise, insomnia, hyperglycaemia, metabolic acidosis. Management: Symptomatic and supportive treatment. β-blockers may be considered but should be used with caution.

Pregnancy Category C. Either studies in animals have revealed adverse effects on the foetus (teratogenic or embryocidal or other) and there are no controlled studies in women or studies in women and animals are not available. Drugs should be given only if the potential benefit justifies the potential risk to the foetus.

Patient with CV disease, CNS disorders, DM, hyperthyroidism, hypokalaemia, seizure disorders, ketoacidosis. Not intended for the relief of acute bronchospasm. Hepatic impairment. Pregnancy and lactation.

Hepatic Impairment: Because Salmeterol is extensively metabolised by the liver, patients with hepatic impairment receiving the drug should be closely monitored.