Brethine

Brethine is used for:

Treating or preventing symptoms caused by spasms or contractions of the muscles around the bronchioles (air tubes) associated with asthma, bronchitis, and emphysema. It may also be used for other conditions as determined by your doctor.

Brethine is a bronchodilator. It works by dilating (opening) the bronchioles of the lungs by relaxing the muscles around them. This allows for easier airflow into and out of the lungs.

Do NOT use Brethine if:

• you are allergic to any ingredient in Brethine

Contact your doctor or health care provider right away if any of these apply to you.

Before using Brethine :

Some medical conditions may interact with Brethine . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you have heart disease, an irregular heartbeat, high blood pressure, an overactive thyroid, diabetes, a history of seizures, or an adrenal gland tumor

Some MEDICINES MAY INTERACT with Brethine . Tell your health care provider if you are taking any other medicines, especially any of the following:

• Catechol-O-methyltransferase (COMT) inhibitors (eg, entacapone), droxidopa, monoamine oxidase (MAO) inhibitors (eg, phenelzine), or tricyclic antidepressants (eg, amitriptyline) because the risk of side effects, such as life-threatening irregular heartbeat, may be increased
• Diuretics (eg, furosemide) because the risk of their side effects may be increased by Brethine
• Beta-blockers (eg, propranolol) because they may decrease Brethine 's effectiveness
• Insulin because its effectiveness may be decreased by Brethine

This may not be a complete list of all interactions that may occur. Ask your health care provider if Brethine may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.