PRECAUTIONS
General
This product, like many other steroid formulations, is
sensitive to heat. Therefore, it should not be autoclaved when it is desirable
to sterilize the exterior of the vial.
The lowest possible dose of corticosteroid should be used
to control the condition under treatment. When reduction in dosage is possible,
the reduction must be gradual.
Since complications of treatment with glucocorticoids are
dependent on the size of the dose and the duration of treatment, a risk/benefit
decision must be made in each individual case as to dose and duration of
treatment and as to whether daily or intermittent therapy should be used.
Kaposi's sarcoma has been reported to occur in patients
receiving corticosteroid therapy, most often for chronic conditions.
Discontinuation of corticosteroids may result in clinical improvement.
Atrophy at the site of injection has been reported.
Cardio-renal
As sodium retention with resultant edema and potassium
loss may occur in patients receiving corticosteroids, these agents should be
used with caution in patients with congestive heart failure, hypertension, or
renal insufficiency.
Endocrine
Drug-induced secondary adrenocortical insufficiency may
be minimized by gradual reduction of dosage. This type of relative
insufficiency may persist for months after discontinuation of therapy;
therefore, in any situation of stress occurring during that period, hormone
therapy should be reinstituted. Since mineralocorticoid secretion may be
impaired, salt and/or a mineralocorticoid should be administered concurrently.
Gastrointestinal
Steroids should be used with caution in active or latent
peptic ulcers, diverticulitis, fresh intestinal anastomoses, and nonspecific
ulcerative colitis, since they may increase the risk of a perforation.
Signs of peritoneal irritation following gastrointestinal
perforation in patients receiving corticosteroids may be minimal or absent.
There is an enhanced effect of corticosteroids in
patients with cirrhosis.
Musculoskeletal
Corticosteroids decrease bone formation and increase bone
resorption both through their effect on calcium regulation (i.e., decreasing
absorption and increasing excretion) and inhibition of osteoblast function.
This, together with a decrease in the protein matrix of the bone secondary to
an increase in protein catabolism, and reduced sex hormone production, may lead
to inhibition of bone growth in pediatric patients and the development of
osteoporosis at any age. Special consideration should be given to patients at
increased risk of osteoporosis (i.e., postmenopausal women) before initiating
corticosteroid therapy.
Injection of a steroid into an infected site is to be
avoided.
Neuro-psychiatric
Although controlled clinical trials have shown
corticosteroids to be effective in speeding the resolution of acute
exacerbations of multiple sclerosis, they do not show that they affect the
ultimate outcome or natural history of the disease. The studies do show that relatively
high doses of corticosteroids are necessary to demonstrate a significant effect
(see DOSAGE AND ADMINISTRATION).
An acute myopathy has been observed with the use of high
doses of corticosteroids, most often occurring in patients with disorders of
neuromuscular transmission (e.g., myasthenia gravis), or in patients receiving
concomitant therapy with neuromuscular blocking drugs (e.g., pancuronium). This
acute myopathy is generalized, may involve ocular and respiratory muscles, and
may result in quadriparesis. Elevation of creatinine kinase may occur. Clinical
improvement or recovery after stopping corticosteroids may require weeks to
years.
Psychic derangements may appear when corticosteroids are
used, ranging from euphoria, insomnia, mood swings, personality changes, and
severe depression to frank psychotic manifestations. Also, existing emotional
instability or psychotic tendencies may be aggravated by corticosteroids.
Ophthalmic
Intraocular pressure may become elevated in some
individuals. If steroid therapy is continued for more than 6 weeks, intraocular
pressure should be monitored.
Carcinogenesis, Mutagenesis, Impairment Of Fertility
No adequate studies have been conducted in animals to
determine whether corticosteroids have a potential for carcinogenesis or
mutagenesis.
Steroids may increase or decrease motility and number of
spermatozoa in some patients.
Pregnancy
Teratogenic Effects - Pregnancy Category C
Corticosteroids have been shown to be teratogenic in many
species when given in doses equivalent to the human dose. Animal studies in
which corticosteroids have been given to pregnant mice, rats, and rabbits have
yielded an increased incidence of cleft palate in the offspring. There are no
adequate and well-controlled studies in pregnant women. Corticosteroids should
be used during pregnancy only if the potential benefit justifies the potential
risk to the fetus. Infants born to mothers who have received corticosteroids
during pregnancy should be carefully observed for signs of hypoadrenalism.
Nursing Mothers
Systemically administered corticosteroids appear in human
milk and could suppress growth, interfere with endogenous corticosteroid
production, or cause other untoward effects. Caution should be exercised when
corticosteroids are administered to a nursing woman.
Pediatric Use
This product contains benzyl alcohol as a preservative.
Benzyl alcohol, a component of this product, has been associated with serious
adverse events and death, particularly in pediatric patients. The “gasping
syndrome”, (characterized by central nervous system depression, metabolic
acidosis, gasping respirations, and high levels of benzyl alcohol and its
metabolites found in the blood and urine) has been associated with benzyl
alcohol dosages > 99 mg/kg/day in neonates and low-birth-weight neonates.
Additional symptoms may include gradual neurological deterioration, seizures,
intracranial hemorrhage, hematologic abnormalities, skin breakdown, hepatic and
renal failure, hypotension, bradycardia, and cardiovascular collapse. Although
normal therapeutic doses of this product deliver amounts of benzyl alcohol that
are substantially lower than those reported in association with the “gasping
syndrome”, the minimum amount of benzyl alcohol at which toxicity may occur is
not known. Premature and low-birth-weight infants, as well as patients
receiving high dosages, may be more likely to develop toxicity. Practitioners
administering this and other medications containing benzyl alcohol should
consider the combined daily metabolic load of benzyl alcohol from all sources.
The efficacy and safety of corticosteroids in the
pediatric population are based on the well-established course of effect of
corticosteroids which is similar in pediatric and adult populations. Published
studies provide evidence of efficacy and safety in pediatric patients for the
treatment of nephrotic syndrome ( > 2 years of age), and aggressive lymphomas
and leukemias ( > 1 month of age). Other indications for pediatric use of
corticosteroids, e.g., severe asthma and wheezing, are based on adequate and
well-controlled trials conducted in adults, on the premises that the course of
the diseases and their pathophysiology are considered to be substantially
similar in both populations.
The adverse effects of corticosteroids in pediatric
patients are similar to those in adults (see ADVERSE REACTIONS). Like
adults, pediatric patients should be carefully observed with frequent
measurements of blood pressure, weight, height, intraocular pressure, and
clinical evaluation for the presence of infection, psychosocial disturbances,
thromboembolism, peptic ulcers, cataracts, and osteoporosis. Pediatric patients
who are treated with corticosteroids by any route, including systemically
administered corticosteroids, may experience a decrease in their growth
velocity. This negative impact of corticosteroids on growth has been observed
at low systemic doses and in the absence of laboratory evidence of HPA axis
suppression (i.e., cosyntropin stimulation and basal cortisol plasma levels).
Growth velocity may therefore be a more sensitive indicator of systemic
corticosteroid exposure in pediatric patients than some commonly used tests of
HPA axis function. The linear growth of pediatric patients treated with
corticosteroids should be monitored, and the potential growth effects of
prolonged treatment should be weighed against clinical benefits obtained and the
availability of treatment alternatives. In order to minimize the potential
growth effects of corticosteroids, pediatric patients should be titrated to the
lowest effective dose.
Geriatric Use
No overall differences in safety or effectiveness were
observed between elderly subjects and younger subjects, and other reported
clinical experience has not identified differences in responses between the
elderly and younger patients, but greater sensitivity of some older individuals
cannot be ruled out.