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Isoetharine mesylate inhalation

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.


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This medication widens breathing passages of the lung to make breathing easier. It is used to treat asthma, emphysema, bronchitis and other lung diseases.

How To Use

The medication is an oral inhaler. For best results, make sure your doctor or pharmacist demonstrate the proper way to use the inhaler. To use the inhaler, tilt the head back and keep the inhaler mouthpiece two finger lengths from the open mouth. Begin to breathe in slowly then press down on the canister to release the medication. Continue to inhale taking in the medication. Hold your breath for at least ten seconds, then exhale. During the second half of breath intake the airways are more open which helps the drug reach deeper into the lungs. If more than one inhalation per dose is needed, wait at least one full minute between inhalations. Use this inhaler as directed. Do not use it more often, increase your dose or stop using this without first consulting your doctor. Excessive use may cause side effects or reduce its effectiveness.

Side Effects

This medication may cause lightheadedness, loss of appetite, nausea, heartburn, strange taste in the mouth, anxiety, restlessness, sleeplessness, cough or increased sweating the first few days as your body adjusts to the medication. If these symptoms continue or become bothersome, inform your doctor. Notify your doctor if you develop: an irregular heartbeat, chest pain, muscle tremors, dizziness, headache, flushing, hives, breathing trouble. If you notice other effects not listed above, contact your doctor or pharmacist.


Tell your doctor if you have: pre-existing heart disease, high blood pressure, chest pain, diabetes, thyroid disease, prostate enlargement, a history of seizures, history of strokes, any allergies. This medication should be used only if clearly needed during pregnancy. Discuss the risks and benefits with your doctor. Since small amounts of this medication are found in breast milk, consult your doctor before breast-feeding.

Drug Interactions

Tell your doctor of any over-the-counter or prescription medication you may take including: antidepressants, insulin, lithium, medication for thyroid, blood pressure drugs, medications used for diabetes. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include chest pain, fast or irregular heartbeat, headache, tremors, nervousness, weakness, and dizziness.


If the usual dose of this medication no longer seems to be effective, notify your doctor.

Missed Dose

If you miss a dose, take it as soon as remembered; do not take it if it is near the time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store canister at room temperature between 59 and 86 degrees F (15 to 30 degrees C) away from heat and light. Do not puncture the canister as it is under pressure. Do not store in the bathroom.

Medical Alert

Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (USA), or 1-800-668-1507 (Canada).