How many different medications are there for
asthma?
At first there can seem to be many different medications
for asthma. This is partly because there are many different inhaler devices;
this is explained in more detail in Inhalers or
Tablets? In reality, the actual medications can be broadly divided into
two main groups:
(1) Relievers which relieve the symptoms of asthma.
(2) Preventers which prevent the symptoms of asthma from coming on.
How does a reliever inhaler work?
Tightening of the muscle surrounding the airways plays a
big part in asthma. Reliever medications work by relaxing this muscle to
open up the airways. This relieves the symptoms of asthma by enabling you
to breathe more easily. Their effect is short lived and they have no action
on the inflammation in the airways which cause symptoms. They are therefore
a short term solution for treating asthma symptoms with no long term benefit.
Is there more than one kind of reliever?
Yes. Relievers can be broadly divided into:
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Short-acting Relievers
Also called immediate or rescue relievers, these should
work almost instantly and relieve symptoms for at least 4 hours. An
example is salbutamol. |
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Long-acting Relievers
This group take longer to have and effect, between
30 and 45 minutes depending on the particular one used. Their effects
last between 6 and 12 hours, again depending on the particular medication.
An example of a long acting reliever is salmeterol. |
When should I use my reliever?
You should use your immediate reliever when you have symptoms
to relieve them. You can also use it before you contact things which make
your asthma worse as this can help prevent your symptoms from coming on.
Sometimes, if your asthma is particularly bad, your doctor may recommend
you use your reliever regularly four times a day but only until you are
better. If you need to take your reliever once a day or more then it is
usually a sign your asthma is getting worse. The longer acting relievers
are normally used regularly each day in addition to regular preventer therapy.
How much reliever should I take?
The usual inhaled dose would be 1 or 2 puffs of your inhaler
depending on which one you use. Discuss this with your doctor. If you are
needing more reliever than usual this may be a sign that your asthma is
getting worse. On the other hand, it may just be that you are not using
your inhaler correctly. Have your inhaler technique checked regularly!
How does my preventer inhaler work?
Inflammation or swelling of the lining of the airways is
thought to be the key problem in asthma. Your preventer inhaler works to
reduce this inflammation. This will make your airways more 'normal' and
less twitchy and sensitive. This in turn prevents your asthma symptoms from
coming on. When you first begin using a preventer inhaler you will not notice
an immediate improvement in your asthma. The change will happen gradually,
and can take anywhere between 7-10 days (steroid preventer) to 4 weeks (sodium
cromoglycate). You must take your preventer every day as prescribed or it
will not work.
Are there different kinds of preventer?
Preventers can be divided into the following groups:
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Steroid Based
The steroid based preventers are the most successful
treatment to date in preventing asthma symptoms. Examples are beclomethasone
and budesonide. |
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Non-steroid Based
Sodium cromoglycate, more commonly known as intal,
is a non-steroid preventer and tends to be less effective than inhaled
steroid preventers at controlling asthma. It also takes between 4
and 6 weeks to have any real benefit.
There are now a new group of non-steroid preventers called leukotriene
antagonists which come in tablet form. They have not been found as
effective in treating asthma as the steroid preventers, but are a
useful addition in patients already on steroid inhalers who need extra
help in controlling their asthma. An example is Accolate.
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When should I use my preventer inhaler?
It is critical to use your preventer inhaler regularly every
day as prescribed. This is usually twice a day morning and evening. If you
do not use it regularly it will not work. If your doctor advises you to
increase the amount of preventer as you are unwell, or decrease it because
you are well, make sure to take the new amount regularly every day.
How much of my preventer should I take?
How much preventer you take will depend on your individual
asthma. Most of the steroid based preventers come in a range of different
strengths. You doctor will aim to keep you on the lowest amount needed to
keep you well and free from symptoms at any one time. As asthma varies so
much, you may need different amounts at different times. For example, if
your asthma becomes worse, your doctor may increase the amount of your preventer
inhaler. Likewise, if you have been well for some time on your dose, your
doctor may recommend you reduce or stop your medication. The best way to
help you and your doctor ensure you are on the best amount of medication
at all times is to monitor your asthma at home. You can find out more about
this in Getting to Know Your Asthma.
When can I stop my medication?
This very much depends on your individual asthma. As the
medication does not cure asthma, but rather controls it, you may always
have to take regular medication. Some people with milder asthma may only
need a reliever occasionally, or a preventer to cover themselves if they
get a cold or flu, but other people may need a preventer all the time. What
you must remember is that asthma is variable. This means you may need different
amounts of medication at different times. Never stop your therapies without
consulting your doctor first or following your self-management plan. You
can find out more about these in Having
a Self-Management Plan.
Which medication should I use if I am having an asthma
attack?
Your immediate reliever inhaler is the most important inhaler
to use in an asthma attack. This is why you should always keep it with you.
As it can be hard to use an inhaler when you are struggling to breathe,
a spacer device can be very useful. This is a plastic bulb which you spray
the medication into before breathing it it from the spacer mouthpiece. You
can find out more about spacers in Inhalers or
Tablets? |
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