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Metered-dose Inhalers (MDIs)
Most of these devices, which deliver medication to your lungs as a spray, require a prescription from your doctor. The medication in a metered-dose inhaler that can be bought without a prescription, such as Primatine Mist™, is adrenaline, a short-acting drug which may be dangerous for persons with heart disease. It is inadequate to treat COPD.
In order to get the maximum benefit from the medication, it is important that the inhaler be used properly. Here are some helpful tips for using a metered-dose inhaler:
Remember, a double pump of the inhaler before one breath delivers less medicine to the lungs than a puff for each breath you take. Use one pump of the inhaler for the number of puffs your doctor prescribes. Do not exceed the dose prescribed by your doctor. If you continue to have difficulty breathing, contact your doctor immediately.
If you have trouble coordinating your breathing with pressing the inhaler, ask your doctor if using a spacer or extender will make it easier for you to inhale the mist from the MDI.