General
The lowest possible dose of corticosteroid should be used to
control the condition under treatment, and when reduction in dosage is possible,
the reduction should 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.
There is an enhanced effect of corticosteroids in patients with
hypothyroidism and in those with cirrhosis.
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.
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 hypertension, congestive heart failure, 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 nonspecific ulcerative
colitis, if there is a probability of impending perforation, abscess or other
pyogenic infection; diverticulitis; fresh intestinal anastomoses; active or
latent peptic ulcer.
Signs of peritoneal irritation following gastrointestinal perforation in
patients receiving corticosteroids may be minimal or absent.
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 children and adolescents and the development of
osteoporosis at any age. Special consideration should be given to patients at
increased risk of osteoporosis (i.e., post-menopausal women) before initiating
corticosteroid therapy.
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.
Information for Patients
Patients should be warned not to discontinue the use of
PREDNISOLONE SODIUM PHOSPHATE ORAL SOLUTION (15 mg Prednisolone per 5 mL)
abruptly or without medical supervision, to advise any medical attendants that
they are taking it, and to seek medical advice at once should they develop fever
or other signs of infection.
Persons who are on immunosuppressant doses of corticosteroids should be
warned to avoid exposure to chicken pox or measles. Patients should also be
advised that if they are exposed, medical advice should be sought without
delay.
Drug Interactions
Drugs such as barbiturates, phenytoin, ephedrine, and rifampin,
which induce hepatic microsomal drug metabolizing enzyme activity may enhance
metabolism of prednisolone and require that the dosage of PREDNISOLONE SODIUM
PHOSPHATE ORAL SOLUTION (15 mg Prednisolone per 5 mL) be increased.
Increased activity of both cyclosporin and corticosteroids may occur when the
two are used concurrently. Convulsions have been reported with this concurrent
use.
Estrogens may decrease the hepatic metabolism of certain corticosteroids
thereby increasing their effect.
Ketoconazole has been reported to decrease the metabolism of certain
corticosteroids by up to 60% leading to an increased risk of corticosteroid side
effects.
Coadministration of corticosteroids and warfarin usually results in
inhibition of response to warfarin, although there have been some conflicting
reports. Therefore, coagulation indices should be monitored frequently to
maintain the desired anticoagulant effect.
Concomitant use of aspirin (or other non-steroidal anti-inflammatory agents)
and corticosteroids increases the risk of gastrointestinal side effects. Aspirin
should be used cautiously in conjunction with corticosteroids in
hypoprothrombinemia. The clearance of salicylates may be increased with
concurrent use of corticosteroids.
When corticosteroids are administered concomitantly with potassium-depleting
agents (i.e., diuretics, amphotericin-B), patients should be observed closely
for development of hypokalemia. Patients on digitalis glycosides may be at
increased risk of arrhythmias due to hypokalemia.
Concomitant use of anticholinesterase agents and corticosteroids may produce
severe weakness in patients with myasthenia gravis. If possible,
anticholinesterase agents should be withdrawn at least 24 hours before
initiating corticosteroid therapy.
Due to inhibition of antibody response, patients on prolonged corticosteroid
therapy may exhibit a diminished response to toxoids and live or inactivated
vaccines. Corticosteroids may also potentiate the replication of some organisms
contained in live attenuated vaccines. If possible, routine administration of
vaccines or toxoids should be deferred until corticosteroid therapy is
discontinued.
Because corticosteroids may increase blood glucose concentrations, dosage
adjustments of antidiabetic agents may be required.
Corticosteroids may suppress reactions to skin tests.
PregnancyTeratogenic EffectsPregnancy Category C
Prednisolone has been shown to be teratogenic in many species
when given in doses equivalent to the human dose. Animal studies in which
prednisolone has 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. PREDNISOLONE SODIUM PHOSPHATE ORAL
SOLUTION (15 mg Prednisolone per 5 mL) 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 PREDNISOLONE
SODIUM PHOSPHATE ORAL SOLUTION (15 mg Prednisolone per 5 mL) is administered to
a nursing woman.
Pediatric Use
The efficacy and safety of prednisolone 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). However, some of these conclusions and other indications
for pediatric use of corticosteroid, 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 prednisolone 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. Children 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
children than some commonly used tests of HPA axis function. The linear growth
of children treated with corticosteroids by any route should be monitored, and
the potential growth effects of prolonged treatment should be weighed against
clinical benefits obtained and the availability of other treatment alternatives.
In order to minimize the potential growth effects of corticosteroids, children
should be titrated to the lowest effective dose.
Geriatric Use
Clinical studies of prednisolone sodium phosphate oral solution
did not include sufficient numbers of subjects aged 65 and over to determine
whether they respond differently from younger subjects. Other reported clinical
experience with prednisolone sodium phosphate has not identified differences in
responses between the elderly and younger patients. However, the incidence of
corticosteroid-induced side effects may be increased in geriatric patients and
appear to be dose-related. Osteoporosis is the most frequently encountered
complication, which occurs at a higher incidence rate in corticosteroid-treated
geriatric patients as compared to younger populations and in age-matched
controls. Losses of bone mineral density appear to be greatest early on in the
course of treatment and may recover over time after steroid withdrawal or use of
lower doses (i.e., ≤5 mg/day). Prednisolone doses of 7.5 mg/day or higher have
been associated with an increased relative risk of both vertebral and
nonvertebral fractures, even in the presence of higher bone density compared to
patients with involutional osteoporosis.
Routine screening of geriatric patients, including regular assessments of
bone mineral density and institution of fracture prevention strategies along
with regular review of prednisolone sodium phosphate indication should be
undertaken to minimize complications and keep the dose at the lowest acceptable
level. Co-administration of bisphosphonates has been shown to retard the rate of
bone loss in corticosteroid-treated males and post-menopausal females, and these
agents are recommended in the prevention and treatment of corticosteroid-induced
osteoporosis.
It has been reported that equivalent weight-based doses yield higher total
and unbound prednisolone plasma concentrations and reduced renal and non-renal
clearance in elderly patients compared to younger populations. However, it is
not clear whether dosing reductions would be necessary in elderly patients,
since these pharmacokinetic alterations may be offset by age-related differences
in responsiveness of target organs and/or less pronounced suppression of adrenal
release of cortisol. Dose selection for an elderly patient should be cautious,
usually starting at the low end of the dosing range, reflecting the greater
frequency of decreased hepatic, renal, or cardiac function, and of communicant
disease or other drug therapy.
This drug is known to be substantially excreted by the kidney, and the risk
of toxic reactions to this drug may be greater in patients with impaired renal
function. Because elderly patients are more likely to have decreased renal
function, care should be taken in dose selection, and it may be useful to
monitor renal function (see CLINICAL PHARMACOLOGY).