Probably quantitatively insignificant metabolic load..

(To be edited, initial data ST OCT 04) Ipratropiumbromide, a quarternary ammonium compound with anticholinergic properties. used in inhalation aerosol (21-42 ug/dose) as bronchodilator in chronic obstructive pulmonary disease and in asthma. No data poiinting to CYP-interaction.

Uneventful use reported in 4 patients with acute porphyria.