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Contine

Theophylline

Contine (Theophylline) is a bronchodilator, structurally classified as a xanthine derivative. It has two distinct actions in the airways of patients with reversible obstruction; smooth muscle relaxation and suppression of the response of the airways to stimuli. It also causes pulmonary vasodilation, stimulates mucociliary clearance and inhibits mast cell mediator release. Theophylline increases the force of contraction of diaphragmatic muscles.

Product Details

Presentation

Contine Tablet : Each controlled release tablet contains Theophylline USP 400 mg. Contine-200 Tablet: Each controlled release tablet contains Theophylline USP 200 mg.
Contine-300 Tablet: Each controlled release tablet contains Theophylline USP 300 mg.
Contine Syrup: Each 5 ml syrup contains Theophylline Sodium Glycinate USP 120 mg equivalent to Anhydrous Theophylline 55 mg.

Pharmacology

Contine (Theophylline) is a bronchodilator, structurally classified as a xanthine derivative. It has two distinct actions in the airways of patients with reversible obstruction; smooth muscle relaxation and suppression of the response of the airways to stimuli. It also causes pulmonary vasodilation, stimulates mucociliary clearance and inhibits mast cell mediator release. Theophylline increases the force of contraction of diaphragmatic muscles.

Indication

Contine is indicated for the prevention & treatment of symptoms of asthma and reversible bronchospasm associated with chronic bronchitis and emphysema.

Dosage & Administration

Dosages are adjusted to maintain serum theophylline concentrations that provide optimal relief of symptoms with minimal side effects. Most of the controlled release preparations may be administered every 12 hours in adults while administration every 8 hours may be necessary in some children with markedly rapid hepatic metabolism of theophylline. The recommended dosages for achieving serum theophylline concentrations within the accepted therapeutic range is as follow:


























Age Dose (mg/Kg/day)
1-6 months 10
6 months-1 year 15
1-9 years 24
10-l6 years 18
Adults 10-15

Contraindications

Theophylline is contraindicated in individuals who have shown hypersensitivity to its components.

Side effects

The following side effects have been observed:
Gastro-intestinal: Nausea, vomiting, epigastric pain and diarrhoea.
Central nervous system: Headache, irritability, restlessness, insomnia, muscles twitching.
Cardiovascular: Palpitation, tachycardia, hypotension. circulatory failure.
Respiratory: Tachypnoea.
Renal: Potentiation of diuresis.
Others: Alopecia, hyperglycemia, rash etc.

Drug interaction

Allopurinol, Cimetidine, Ciprofloxacin. Erythromycin, Lithium carbonate, Oral contraceptive, Propranolol increases serum theophylline level when administered concomitantly and Rifampicin decreases serum theophylline level.

Use in special groups

Theophylline should not be administered concurrently with other xanthine. Use with caution in patients with hypoxemia, hypertension, or those with history of peptic ulcer. Do not attempt to maintain any dose that is not tolerated.
Use in Pregnancy:
It is also not known whether theophylline can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Xanthine should be given to a pregnant woman only if clearly needed.
Use in Nursing Mothers:
Theophylline is excreted into breast milk and may cause irritability or other signs of toxicity in nursing infants. Theophylline should be given to nursing mother only if clearly needed.

Packing

Contine Tablet: Each box contains 100’s tablets in blister pack.
Contine-200 Tablet : Each box contains l00’s tablets in blister pack.
Contine-300 Tablet : Each box contains 100’s tablets in blister pack.
Contine Syrup : Each bottle contains 100 ml syrup.

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