Orciprenaline
 Mechanism : 
It is a beta stimulant, which causes selective bronchial dilation. It is used in the treatment and management of acute asthma. It is available as oral preparation and injectable and inhalation preparation.
 Indication : 
- Chronic Bronchitis
 - Emphysema
 - Bronchospasm
 
Dosing : 
<2 years:
0.4 mg/kg/dose 3-4 times daily PO.
>2 years:
1.3-2.6 mg/kg/day qds PO.
MDI:
2-3 puffs every 4 hours.
 Adverse Effect : 
Hypokalemia, tachyarrhythmia.
 Interaction : 
Acebutolol: Antagonism. 
Alseroxylon: Increased arterial pressure. 
Amitriptyline: The tricyclic antidepressant, amitriptyline, increases the sympathomimetic effect of orciprenaline. 
Amoxapine: The tricyclic antidepressant, amoxapine, increases the sympathomimetic effect of orciprenaline. 
Atenolol: Antagonism. 
Betaxolol: Beta-Blockers (Beta1 Selective) like betaxolol may diminish the bronchodilator effect of Beta2-Agonists like orciprenaline. Therapy should be monitored. 
Bevantolol: Antagonism. 
Bisoprolol: Antagonism. 
Carteolol: Antagonism. 
Carvedilol: Antagonism. 
Clomipramine: The tricyclic antidepressant, clomipramine, increases the sympathomimetic effect of orciprenaline. 
Deserpidine: Increased arterial pressure. 
Desipramine: The tricyclic antidepressant, desipramine, increases the sympathomimetic effect of orciprenaline. 
Doxepin: The tricyclic antidepressant, doxepin, increases the sympathomimetic effect of orciprenaline. 
Esmolol: Antagonism. 
Imipramine: The tricyclic antidepressant, imipramine, increases the sympathomimetic effect of orciprenaline. 
Isocarboxazid: Increased arterial pressure. 
Labetalol: Antagonism. 
Linezolid: Possible increase of arterial pressure. 
Methyldopa: Increased arterial pressure. 
Metoprolol: Antagonism. 
Midodrine: Increased arterial pressure. 
Moclobemide: Moclobemide increases the sympathomimetic effect of orciprenaline. 
Nadolol: Antagonism. 
Nortriptyline: The tricyclic antidepressant, nortriptyline, increases the sympathomimetic effect of orciprenaline. 
Oxprenolol: Antagonism. 
Pargyline: Increased arterial pressure. 
Penbutolol: Antagonism. 
Phenelzine: Increased arterial pressure. 
Pindolol: Antagonism. 
Practolol: Antagonism. 
Propranolol: Antagonism. 
Protriptyline: The tricyclic antidepressant, protriptyline, increases the sympathomimetic effect of orciprenaline. 
Rasagiline: Increased arterial pressure. 
Reserpine: Increased arterial pressure. 
Sotalol: Antagonism. 
Timolol: Antagonism. 
Tranylcypromine: Increased arterial pressure. 
Trimipramine: The tricyclic antidepressant, trimipramine, increases the sympathomimetic effect of orciprenaline.
 Hepatic Dose : 
No dosage adjustments are recommended.