Ventolin Dosages – Evohaler and Accuhaler
Evohaler is the most popular method for administering Ventolin doses to asthma patients. The medication is held in a canister that is connected to a mouthpiece. The canister releases the Salbutamol in the form of a fine mist (carried by HFA 134a propellant) that has to be inhaled at once.
The recommended dosage for children less than 12 years old is one puff for alleviating the symptoms, and one puff (10-15 minutes earlier) for preventing asthma attacks due to potential trigger exposure or exercise. The dosage may be doubled if necessary.
In case of patients aged 12 years or older, the dosage is one or two puffs for dealing with symptoms, and two puffs for preventing asthma episodes. Regular treatment for all patients, regardless of age, is two puffs as many as four times daily. Each Evohaler holds enough Ventolin for 200 puffs.
Before the Evohaler can be used for the first time, it has to be tested and primed: Once you have removed the cap, check that it is in working condition by shaking it and pressing the canister to release two puffs. Make sure that the mouthpiece is directed away from you. This process is also necessary to Evohalers that have not been used for five or more days.
The Evohaler is used as follows:
- Verify that the mouthpiece is unobstructed and clean. Shake the device several times to get rid of any loose objects, and to ensure even mixing of the medicine and propellant.
- While sitting or standing straight, hold the Evohaler upright and exhale.
- Hold the mouthpiece between your teeth (without biting), with your lips closed around it.
- Inhale deeply and steadily, and just before you do so, press down on the canister to release a puff.
- While holding your breath, remove the inhaler from your mouth. Do not exhale for a few seconds.
- If you need to take a second dose, wait for around 30 seconds before repeating the process.
Some people (especially children) find it difficult to use an Evohaler – specific aids are available for such individuals to facilitate them in using it. This includes a spacer; a plastic bubble device where you attach the Evohaler to one end and inhale in the other. This is suitable for anyone who finds it difficult to press down on the canister and inhale correctly.
The Ventolin Accuhaler is a dry powder based inhalation alternative to the Evohaler. It is suitable for those asthmatics that find it difficult to time their breath as they press the Evohaler’s canister, even with help from a spacer. The Accuhaler contains several dozen blisters, each of which holds a prescribed dosage (normally 200 micrograms) of salbutamol in powder form. The number of blisters i.e. doses remaining is indicated by a counter built on top of the inhaler.
The recommended dosage for asthmatic patients, regardless of age, is one inhalation for relieving asthma symptoms and one inhalation (10-15 minutes prior) for preventing asthma episodes e.g. due to exercise or being exposed to a trigger. The maximum recommended number of inhalations for one day is four.
The Accuhaler is used as follows:
- The device’s exterior case is held in one hand, while the thumb of the other hand is placed on the thumb grip. The thumb grip is then pushed until a click is heard, revealing a small opening in the Accuhaler’s mouthpiece.
- The patient holds the device with the mouthpiece oriented towards them, then slides the lever until another click is heard, signaling that a single dose has been released into the mouthpiece.
- Holding the Accuhaler away from their mouth, the patient exhales completely.
- The patient brings the mouthpiece up to their lips, and inhales the powdered Ventolin in a deep, steady breath through their mouth. After removing the Accuhaler from their mouth and holding their breath for around ten seconds, the patient slowly exhales.
- The thumb grip is slid back until a click is audible. This resets the lever and closes the Accuhaler.