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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