How does Aironyl work?
Terbutaline sulphate belongs to a group of medicines
called short-acting beta 2 agonists. It works by
acting on receptors in the lungs, called beta 2
receptors. Stimulation of these receptors causes the
muscles in the airways to relax, and this allows the
airways to open.
In conditions where there is narrowing of the
airways, such as
asthma, emphysema and
bronchitis, it is difficult for air to get in
and out of the lungs. By opening the airways,
terbutaline makes it easier to breath.
Terbutaline is most commonly taken using an inhaler
device. Inhaling the medicine allows it to act
directly in the lungs where it is needed most. It
also reduces the potential for side effects
occurring in other parts of the body, as the amount
absorbed into the blood through the lungs is lower
than if it is taken by mouth. Terbutaline when used
as an inhaler is known as a reliever. This is
because it works very quickly to relieve asthma
attacks or shortness of breath. Terbutaline inhalers
can also be used to open the airways shortly before
exercising. Terbutaline tablets are sometimes
prescribed if inhaled terbutaline is being used
frequently to relieve shortness of breath. The
tablets are taken regularly to help keep the airways
open all the time and reduce the need for the
Why we use Aironyl? ►Asthma ► Breathing difficulties due to a narrowing of the
airways (bronchospasm) ► Chronic obstructive pulmonary disease
Not to be used in ► Heart disease
characterized by thickening of the
internal heart muscle (hypertrophic cardiomyopathy)
This medicine should not be used if you are allergic
to one or any of its ingredients. Please inform your
doctor or pharmacist if you have previously
experienced such an allergy. If you feel you have
experienced an allergic reaction, stop using this
medicine and inform your doctor or pharmacist
Pregnancy and Breastfeeding
Certain medicines should not be used during
pregnancy or breastfeeding. However, other medicines
may be safely used in pregnancy or breastfeeding
providing the benefits to the mother outweigh the
risks to the unborn baby. Always inform your doctor
if you are pregnant or planning a pregnancy, before
using any medicine.
• This medicine should be used with caution during
the first trimester of pregnancy.
• The medicine passes into the breast milk, but at
normal doses it is unlikely to harm the baby.
Discuss with your doctor.
Beta-blockers such as atenolol, propranolol or
timolol should not generally be taken with this
medicine. This is because beta-blockers have an
opposite action to terbutaline, and can cause the
airways to narrow. This can result in breathing
difficulties for people with asthma or chronic
obstructive airways disease.
Eye drops containing
beta-blockers should also be avoided.
can potentially cause a serious decrease in the
levels of potassium in the blood (hypokalaemia),
which may result in increased risk of abnormal heart rhythms
(arrhythmias) if hypokalaemia occurs while taking
This effect can
be increased by the following medicines: ► Xanthine
derivates such as theophylline ► Corticosteroids
such as beclometasone and prednisolone ► Diuretics such as
bendrofluazide and frusemide
There may be an increased risk of
side effects if this medicine is taken with other
sympathomimetic medicines, such as the following:
Other beta 2 agonists: e.g. salbutamol, salmeterol
Decongestants: e.g. Ephedrine, pseudoephedrine,
phenylephrine - adrenaline - dopamine - amfetamines.