Your doctor may suggest it is worth using a loaned/hired nebuliser for several weeks to see if it is of benefit to you. In each area hire/loan pools are operated by different agencies. Your doctor or the local Asthma Society will know where you can find one near you.
Only a doctor can prescribe the nebuliser medication and give approval for you to hire a nebuliser. Specialists at the hospital may arrange for some of their patients to have a nebuliser on loan from the hospital. You may be asked to keep taking peak flow recordings during your nebuliser trial.
Often an inhaler with a spacer is as effective for most people, provided adequate doses of medication are given. Because a nebuliser is a machine and costs a lot more money than an inhaler and spacer, it does not necessarily mean it is the best choice for you.