For adults and children over 16 years old who are initially using a flunisolide inhaler, dosing usually starts at two inhalations twice a day. If needed, the dosage can be increased up to four inhalations twice daily. The recommended (and maximum) flunisolide inhaler dosage for children ages 6 to 15 is two inhalations twice a day.

• Your age
• The severity of your asthma
• Other medications you may be taking.
   

• Flunisolide comes in a metered-dose inhaler (called an "MDI").
   
• The flunisolide inhaler is used twice a day every day. It is used to prevent asthma attacks, not to treat them.
   
• Be sure to shake the inhaler gently before each use.
   
• Wait at least one minute in between inhalations (if you take more than one inhalation at a time), making sure to shake the inhaler before each inhalation.
   
• Rinse your mouth (without swallowing) after each flunisolide inhaler dose, in order to prevent thrush.
   
• It is important to learn exactly how to use your flunisolide inhaler. It may be difficult at first and may require practice.
   
• The spray should be inhaled into the lungs, not sprayed onto the back of the throat and swallowed. To accomplish this, you will need to breathe in while spraying the inhaler.
   
• Each inhaler contains 100 sprays. Try to keep track of approximately how many sprays you have used in order to know when to replace the inhaler. Do not place the inhaler in water to see if it is empty (although doing so was recommended in the past).
   
• For the flunisolide inhaler to work properly, it must be used as prescribed. The medication will not work if you stop using it.
   
• If you are unsure about anything related to your dosage or flunisolide inhaler dosing in general, please talk with your healthcare provider, nurse, or pharmacist.