GENERIC NAME: budesonide
DRUG CLASS AND MECHANISM: Budesonide is a man-made glucocorticoid
steroid related to the naturally-occurring hormone, cortisol
or hydrocortisone which is produced in the adrenal glands.
It is used for treating asthma by inhalation. Glucocorticoid
steroids such as cortisol or budesonide have potent anti-inflammatory
actions that reduces inflammation and hyper-reactivity
(spasm) of the airways caused by asthma. When used as
an inhaler, the budesonide goes directly to the inner
lining of the inflamed airways to exert its effects. Only
39% of an inhaled dose of budesonide is absorbed into
the body, and the absorbed budesonide contributes little
to the effects on the airways.
GENERIC AVAILABLE: no
PRESCRIPTION: yes
PREPARATIONS: Pulmicort Turbuhaler 200 mcg: each 200
mcg actuation delivers 160 mcg of budesonide. Pulmicort
Respules, 0.25 mg/2ml or 0.5 mg/2ml suspension.
STORAGE: Budesonide should be stored at room temperature,
20-25 <C (68-77 <F).
PRESCRIBED FOR: The budesonide inhaler is used for
the control of asthma in persons requiring continuous,
prolonged treatment. Such patients may include those
with frequent asthmatic episodes requiring bronchodilators,
for example, albuterol (Ventolin) or those with asthmatic
episodes at night.
DOSING: Budesonide is used to prevent asthmatic attacks
and should not be used to treat an acute attack of asthma.
The Turbuhaler is used for individuals six years of
age or older. Effects can be seen within 24 hours, but
maximum effects may not be seen for 1-2 weeks or longer.
Doses vary widely. Adults usually receive 1-4 actuations
(puffs) twice daily. Children usually receive 1-2 puffs
twice daily. For those with mild asthma, treatment once
daily may be sufficient.
Pulmicort Respules are used for individuals 12 months
to eight years of age. Effects are seen in 2-8 days,
but maximum effects may not be seen for up to 4-6 weeks.
Pulmicort Respules are used with a jet nebulizer. They
usually are taken as one or two doses for a total of
0.5-1 mg daily.
DRUG INTERACTIONS: Ketoconazole increases the concentrations
in blood of budesonide, and this may lead to an increase
in the side effects of budesonide. No drug interactions
have been described with inhaled budesonide.
PREGNANCY: When given orally to animals, glucocorticoid
steroids similar to budesonide have been shown to cause
fetal abnormalities. Studies of pregnant women using
inhaled budesonide during early pregnancy, however,
do not show an increase in the rate of fetal abnormalities.
Nevertheless, since these studies cannot exclude the
possibility of rare effects on the fetus, inhaled budesonide
should be used with caution during pregnancy.
NURSING MOTHERS: It is not known if budesonide is secreted
in breast milk. Other medications similar to budesonide
are indeed secreted in breast milk. It is not known
whether the small amounts that may appear in breast
milk have effects on the infant.
SIDE EFFECTS: The most commonly noted side effects
associated with inhaled budesonide are mild cough or
wheezing; these effects may be minimized by using a
bronchodilator inhaler, for example, albuterol (Ventolin)
, prior to the budesonide. Oral candidiasis or thrush
(a fungal infection of the throat) may occur in 1 in
25 persons who use budesonide without a spacer device
on the inhaler. The risk is even higher with large doses
but is less in children than in adults. Hoarseness or
sore throat also may occur in 1 in 10 persons. Using
a spacer device on the inhaler and washing one's mouth
out with water following each use reduces the risk of
both thrush and hoarseness. Less commonly, alterations
in voice may occur.
High doses of inhaled glucocorticoid steroids may decrease
the formation and increase the breakdown of bone leading
to weakened bones and ultimately osteoporosis and fractures.
High doses may suppress the body's ability to make its
own natural glucocorticoid in the adrenal gland. It
is possible that these effects are shared by budesonide.
People with suppression of their adrenal glands (which
can be tested for by the doctor) need increased amounts
of glucocorticoid steroids orally or intravenously during
periods of high physical stress, for example, during
infections, to prevent serious illness and shock.
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