Using an expired inhaler is not ideal, but it is generally safe to use in an emergency situation when there are no other options. The active ingredients in inhalers break down over time, so the medication may not work as effectively as a new inhaler. The main risk associated with using an expired inhaler is that it may not control asthma symptoms as effectively as a new inhaler. If a person uses an expired inhaler in an emergency, they should try to use a new inhaler as soon as possible and seek medical treatment.

Here are some key points to keep in mind about using an expired inhaler:

• Inhalers expire after about a year.
• Most inhalers, including both rescue and long-term control versions, have a one-year expiration date from the moment an individual first opens the foil packaging.
• Inhalers tend to remain at least partially effective after expiration, but this depends on several factors, including how well the inhalers were stored during that year.
• Inhalers are often carried with people in purses or backpacks, which can mean they’re exposed to greater temperature or humidity changes.
• If a person uses an expired inhaler to control an asthma attack, they may find that the medication does not work as well as it should.
• It is best to replace inhalers once their expiration dates pass to reduce the risks of experiencing asthma symptoms.
• If in doubt, ask your doctor for a new prescription for a fresh inhaler, so you can be sure its effective, and make sure to take note of the expiration date this time[[6]](https://ww...