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| Asthma
Medications |
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A number of medications exist
for asthma, and many are used in combination
with others. Your doctor can help you decide
which option is best for you based on your age
and the severity of your symptoms. In general,
the main types of asthma medications are:
- Long-term-control
medications. These are used on a
regular basis to control chronic symptoms and
prevent attacks.
- Quick-relief
medications. Also called rescue
medications, you use these as needed for rapid,
short-term relief of symptoms during an asthma
attack.
- Medications for
allergy-induced asthma. These decrease
your body's sensitivity to a particular allergen
and prevent your immune system from reacting to
allergens.
Long-term-control medications
These medications are taken every day,
usually on a long-term basis, to control
persistent asthma.
-
Inhaled corticosteroids.
These anti-inflammatory drugs are the most
effective medications for asthma. They're
different from anabolic steroids, which some
athletes abuse. Corticosteroids reduce
inflammation in your airways.
Corticosteroids help decrease the frequency
of your attacks and reduce the need for other
medications you may use to control your
symptoms. Because inhaled corticosteroids
control most forms of asthma by delivering
medication directly to your airways, they have a
low risk of side effects. When used as directed,
inhaled corticosteroids can minimize your need
for oral corticosteroids, which have a higher
risk of side effects. Inhaled corticosteroids
include fluticasone (Flovent), budesonide
(Pulmicort), triamcinolone (Azmacort),
flunisolide (Aerobid) and beclomethasone (Qvar).
Advair Diskus is a combination inhaler
containing fluticasone and salmeterol.
Inhaled corticosteroids may affect some
children's growth. If your child is taking these
medications, have his or her growth rate
regularly monitored. Long-term use of inhaled
corticosteroids may slightly increase the risk
of skin thinning and bruising.
If you're using a metered dose inhaler form
of corticosteroid, be sure to use a spacer and
gargle with water afterward. It's important to
spit out this water. This reduces the amount of
drug that can be swallowed and absorbed into
your body by way of your stomach. It also
reduces side effects, such as mouth and throat
irritation and oral yeast infections
(thrush).
-
Long-acting beta-2 agonists
(LABAs). These medications are part of
a group of medications called bronchodilators,
which open up constricted airways. Long-acting
beta-2 agonists, such as salmeterol (Serevent
Diskus) and formoterol (Foradil Aerolizer) last
at least 12 hours. They're used to control
moderate and severe asthma and to prevent
nighttime symptoms. Salmeterol or formoterol
should always be combined on a regular schedule
with inhaled corticosteroids and should not be
used as the main treatment for asthma.
On Nov. 18, 2005, the Food and Drug
Administration (FDA) issued a public health
advisory for three LABA medications, warning
that the medications may increase the risk of
severe asthma episodes and possibly death if a
severe asthma episode occurs. The three asthma
medications included in the advisory are:
- Advair Diskus
- Foradil Aerolizer
- Serevent Diskus
The FDA has asked the manufacturers of the
three medications to update their product labels
with the new health warning. If you experience
asthma attacks and you're taking one of these
medications, you'll need to talk with your
doctor to determine the best course of
action.
-
Leukotriene modifiers. These
drugs reduce the production or block the action
of leukotrienes — substances released by cells
in your lungs during an asthma attack.
Leukotrienes cause the lining of your airways to
become inflamed, which in turn leads to
wheezing, shortness of breath and mucus
production. Leukotriene modifiers include
montelukast (Singulair) and zafirlukast
(Accolate).
Used in conjunction with other medications —
such as inhaled corticosteroids — leukotriene
modifiers may help prevent more attacks.
Although generally not as effective as inhaled
corticosteroids, leukotriene modifiers are an
option if you have mild asthma and want to avoid
corticosteroids.
- Cromolyn and
nedocromil. Although they're not
effective for everyone, daily use of inhaled
cromolyn (Intal) or nedocromil (Tilade) may help
prevent mild to moderate asthma attacks. In some
cases, they may also help prevent asthma
triggered by exercise if you take them an hour
before any vigorous activity.
- Theophylline.
You take this bronchodilator in pill form every
day. It may be helpful for relieving your
nighttime symptoms of asthma. But theophylline
may cause side effects, such as nausea and
vomiting, severe abdominal pain, diarrhea, acid
reflux, confusion, fast or irregular heartbeat,
and nervousness. If you're taking theophylline,
get regular blood tests to make sure you're
getting the correct dosage.
Quick-relief medications
These medications — medically known as
short-acting bronchodilators — are sometimes
called "rescue" medications because they can
stop the symptoms of an asthma attack. These
medications are taken as needed when you first
begin to feel asthma signs and symptoms, such as
coughing, wheezing, chest tightness or shortness
of breath. Short-acting bronchodilators are also
effective if taken before you feel any signs or
symptoms, such as when your peak flow meter
shows readings lower than normal. A peak flow
meter is a device you can use at home to help
detect subtle increases in your airway
obstruction. A low reading may be a sign that
your asthma is about to flare up. Your doctor
can give you instructions on how to deal with
low readings.
- Short-acting
beta-2 agonists. These bronchodilators
begin working within minutes and last four to
six hours. But they can't keep symptoms from
coming back. The most commonly used short-acting
bronchodilator for asthma is albuterol.
- Ipratropium
(Atrovent). Your doctor may prescribe
this medication for the immediate relief of your
asthma symptoms.
- Oral and
intravenous corticosteroids for asthma
attacks. These corticosteroids —
including prednisone, methylprednisolone,
hydrocortisone and others — may be taken to
treat acute asthma attacks or very severe
asthma. They may take a few hours or a few days
to be fully effective. Long-term use of these
medications can cause serious side effects,
including cataracts, loss of bone mineral
(osteoporosis), muscle weakness, decreased
resistance to infection, high blood pressure and
thinning of the skin.
Medications for allergy-induced asthma
Other medications focus on treating allergy
triggers for asthma. These include:
- Immunotherapy.
If you have allergic asthma that can't be easily
controlled by avoiding triggers and using
medication, allergy desensitization shots
(immunotherapy) may help you. You'll begin with
skin tests to determine the allergens that cause
you the most trouble, followed by a series of
therapeutic injections containing small doses of
those allergens. You generally receive
injections once a week for a few months, then
once a month for a period of three to five
years. Over time, you should lose your
sensitivity to the allergens. Immunotherapy
isn't for everyone, though. You're most likely
to benefit if it's clear you have allergic
asthma. In addition, immunotherapy carries the
risk of an allergic reaction to the shot.
Life-threatening reactions are rare but
possible.
-
Anti-IgE monoclonal
antibodies. If you have allergies, your
immune system produces allergy-causing IgE
antibodies to attack substances that generally
cause no harm, such as pollen, dust mites and
pet dander. If you have allergic asthma that's
difficult to control, omalizumab (Xolair) may
reduce the number of asthma attacks you
experience by blocking the action of these
antibodies. That way your immune system isn't
prompted to react and cause the inflammation
that makes breathing difficult.
Your doctor may recommend Xolair if you have
moderate to severe asthma caused by an allergy,
if all other treatments have failed and if
you're at least 12 years old.
Xolair is delivered by injection every two to
four weeks. Risks include the possibility of a
severe reaction within two hours of receiving
the shot, blood-clotting problems and a possible
link to cancer. That link is currently being
studied. Also, if you're pregnant or
breast-feeding, tell your doctor
beforehand.
Treatment by severity for better
control
Treatment based on asthma severity can help
you control your asthma. According to guidelines
from the American Academy of Allergy, Asthma
& Immunology and the American College of
Allergy, Asthma & Immunology, asthma therapy
should be flexible and based on changes in
symptoms, which should be assessed thoroughly
each time you see your doctor. Then, treatment
can be adjusted accordingly.
For example, if your asthma is well
controlled, you may be able to take less
medicine. On the other hand, if your asthma is
uncontrolled or worsening, an increase in
medication and more frequent visits with your
doctor may be required.
Prevention
The best way to prevent asthma attacks is to
identify and avoid indoor and outdoor allergens
and irritants. That's easier said than done
because thousands of outdoor allergens and
irritants — ranging from pollen and mold to cold
air and air pollution — can trigger your
attacks. A number of indoor allergens, including
dust mites, cockroaches, pet dander and mold,
can do the same. A common asthma irritant is
tobacco smoke.
Even if you reduce indoor and outdoor
allergens and irritants, managing asthma can be
challenging. It often takes ongoing
communication and teamwork with your doctor. But
by working together, you and your doctor can
design a step-by-step plan for living with your
condition. In addition to knowing and avoiding
your triggers, adopt the following
behaviors:
- Develop an action
plan. With your doctor and health care
team, write a detailed plan for taking
maintenance medications and managing an acute
attack. Then be sure to follow your plan. Asthma
is an ongoing condition that needs regular
monitoring and treatment. Taking control of your
treatment can make you feel more in control of
your life in general.
- Monitor your
breathing. Like many people, you may
recognize your own signs of an impending attack,
such as slight coughing, wheezing or shortness
of breath. But because your lung function may
decrease before you notice any signs or
symptoms, regularly measure your peak airflow
with a home peak flow meter.
- Treat attacks
early. If you act quickly, you're less
likely to have a severe attack. You also won't
need as much medication to control your
symptoms. When your peak flow measurements
decrease and alert you to an impending attack,
take your medication as instructed and
immediately stop any activity that may have
triggered the attack. If your symptoms don't
improve, get medical help as directed in your
action plan.
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