Bromide

7 DRUG INTERACTIONS Ipratropium bromide HFA inhalation aerosol has been used concomitantly with other drugs, including sympathomimetic bronchodilators, methylxanthines, oral and inhaled steroids commonly used in the treatment of COPD. With the exception of albuterol, there are no formal studies fully evaluating the interaction effects of ipratropium bromide HFA inhalation aerosol and these drugs with respect to safety and effectiveness. Avoid administration of ipratropium bromide HFA inhalation aerosol with other anticholinergic-containing drugs ( 7.1 ) 7.1 Anticholinergic Agents There is potential for an additive interaction with concomitantly used anticholinergic medications.

Avoid administration of tiotropium bromide inhalation powder with other anticholinergic-containing drugs. ( 7.2 ) 7.1 Sympathomimetics, Methylxanthines, Steroids Tiotropium bromide inhalation powder has been used concomitantly with short-acting and long-acting sympathomimetic (beta-agonists) bronchodilators, methylxanthines, and oral and inhaled steroids without increases in adverse reactions. Therefore, avoid coadministration of tiotropium bromide inhalation powder with other anticholinergic-containing drugs as this may lead to an increase in anticholinergic adverse effects [see Warnings and Precautions ( 5.4 , 5.5 ) and Adverse Reactions ( 6 )].

Drug Interactions Anticholinergic agents : Although ipratropium bromide is minimally absorbed into the systemic circulation, there is some potential for an additive interaction with concomitantly used anticholinergic medications. Caution is, therefore, advised in the coadministration of ipratropium bromide and albuterol sulfate with other drugs having anticholinergic properties. ß-adrenergic agents : Caution is advised in the coadministration of ipratropium bromide and albuterol sulfate and other sympathomimetic agents due to the increased risk of adverse cardiovascular effects.

Monitor for adverse reactions related to neuromuscular blockade (see package insert for vecuronium bromide).

( 7.2 ) 7.1 Sympathomimetics, Methylxanthines, Steroids In clinical studies, concurrent administration of aclidinium bromide and other drugs commonly used in the treatment of COPD including sympathomimetics (short-acting beta 2 agonists), methylxanthines, and oral and inhaled steroids showed no increases in adverse drug reactions.

Drug Interactions Opioids The concomitant use of benzodiazepines, including chlordiazepoxide hydrochloride, a component of chlordiazepoxide hydrochloride and clidinium bromide capsules, and opioids increases the risk of respiratory depression because of actions at different receptor sites in the CNS that control respiration. Limit dosage and duration of concomitant use of chlordiazepoxide hydrochloride and clidinium bromide capsules and opioids, and follow patients closely for respiratory depression and sedation. Oral Anticoagulants Although clinical studies have not established a cause and effect relationship, physicians should be aware that variable effects on blood coagulation have been reported very rarely in patients receiving oral anticoagulants and chlordiazepoxide hydrochloride, a component of chlordiazepoxide hydrochloride and clidinium bromide capsules.

Drug Interactions Ipratropium bromide has been shown to be a safe and effective bronchodilator when used in conjunction with beta adrenergic bronchodilators. Ipratropium bromide has also been used with other pulmonary medications, including methylxanthines and corticosteroids, without adverse drug interactions.

Methocarbamol may inhibit the effect of pyridostigmine bromide.

Methocarbamol may inhibit the effect of pyridostigmine bromide.

Concomitant administration with antacids may interfere with the absorption of methscopolamine bromide.

( 7.5 ) 7.1 Mefloquine Concomitant use of mefloquine and pyridostigmine bromide may have additive effects on the gastrointestinal tract, the most common of which is loose bowels. Additive effects on the atrial rate may also occur with concomitant use of mefloquine and pyridostigmine bromide. 7.2 Other Anticholinesterase Drugs Concomitant use of anticholinesterase drugs used in the treatment of glaucoma and pyridostigmine bromide may have an additive effect that may cause or exacerbate problems with night vision.

7 DRUG INTERACTIONS 7.1 Antibiotics Drugs which may enhance the neuromuscular blocking action of nondepolarizing agents such as rocuronium bromide include certain antibiotics (e.g., aminoglycosides; vancomycin; tetracyclines; bacitracin; polymyxins; colistin; and sodium colistimethate). If these antibiotics are used in conjunction with rocuronium bromide, prolongation of neuromuscular block may occur. 7.2 Anticonvulsants In 2 of 4 patients receiving chronic anticonvulsant therapy, apparent resistance to the effects of rocuronium bromide was observed in the form of diminished magnitude of neuromuscular block, or shortened clinical duration.

( 7.7 ) Enhanced rocuronium bromide activity possible : Inhalation anesthetics ( 7.3 ), certain antibiotics ( 7.1 ), quinidine ( 7.10 ), magnesium ( 7.6 ), lithium ( 7.4 ), local anesthetics ( 7.5 ), procainamide. ( 7.8 ) Reduced rocuronium bromide activity possible : Anticonvulsants. ( 7.2 ) 7.1 Antibiotics Drugs which may enhance the neuromuscular blocking action of nondepolarizing agents such as rocuronium bromide include certain antibiotics (e.g., aminoglycosides; vancomycin; tetracyclines; bacitracin; polymyxins; colistin; and sodium colistimethate).