WARNINGS
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PRECAUTIONS
General
Systemic absorption of topical corticosteroids has produced reversible hypothalamic-pituitary-adrenal
(HPA) axis suppression, manifestations of Cushingfs syndrome, hyperglycemia, and glucosuria in some
patients. Conditions which augment systemic absorption include the application of the more potent
corticosteroids, use over large surface areas, prolonged use, and the addition of occlusive dressings.
Therefore, patients receiving a large dose of a potent topical corticosteroid applied to a large surface
area or under an occlusive dressing should be evaluated periodically for evidence of HPA axis
suppression by using ACTH stimulation tests.
If HPA axis suppression is noted, an attempt should be made to withdraw the drug, to reduce the
frequency of application, or to substitute a less potent corticosteroid.
Recovery of HPA axis function is generally prompt and complete upon discontinuation of the drug.
Infrequently, signs and symptoms of corticosteroid withdrawal may occur, requiring supplemental
systemic corticosteroids.
Children may absorb proportionally larger amounts of topical corticosteroids and thus be more
susceptible to systemic toxicity. (See Pediatric Use).
If irritation develops, topical corticosteroids should be discontinued and appropriate therapy instituted.
In the presence of dermatological infections, the use of an appropriate antifungal or antibacterial agent
should be instituted. If a favorable response does not occur promptly, the corticosteroid should be
discontinued until the infection has been adequately controlled.
Carcinogenesis, Mutagenesis, Impairment Of Fertility
Note: The animal multiples of human exposure calculations in this label were based on body surface
area comparisons for an adult (i.e., mg/m2/day dose comparisons) assuming 100% human percutaneous
absorption of a maximum topical human dose (MTHD) for hydrocortisone butyrate solution (25 g).
In a 2-year dermal rat carcinogenicity study with Locoid® Lotion, hydrocortisone butyrate was
administered to Sprague-Dawley rats at topical doses of 0.05, 0.15, and 0.3 mg/kg/day in males and 0.1,
0.25, and 0.5 mg/kg/day in females (0.1% lotion). No drug-related tumors were noted in this study up to
the highest doses evaluated in this study of 0.3 mg/kg/day in males (0.1X MTHD) and 0.5 mg/kg/day in
females (0.2X MTHD).
Hydrocortisone butyrate revealed no evidence of mutagenic or clastogenic potential based on the
results of two in vitro genotoxicity tests (Ames test and L5178Y/TK+/- mouse lymphoma assay) and one
in vivo genotoxicity test (mouse micronucleus assay).
No evidence of impairment of fertility or effect on mating performance was observed in a fertility and
general reproductive performance study conducted in male and female rats at subcutaneous doses up to
and including 1.8 mg/kg/day (0.7X MTHD). Mild effects on maternal animals, such as reduced food
consumption and a subsequent reduction in body weight gain, were seen at doses ≥0.6 mg/kg/day (0.2X
MTHD).
Pregnancy Category C
Corticosteroids are generally teratogenic in laboratory animals when administered systemically at
relatively low dosage levels. The more potent corticosteroids have been shown to be teratogenic after
dermal application in laboratory animals. There are no adequate and well-controlled studies in pregnant
women on teratogenic effects from topically applied corticosteroids. Therefore, topical
corticosteroids should be used during pregnancy only if the potential benefit justifies the potential risk
to the fetus.
Drugs of this class should not be used extensively on pregnant patients, in large amounts, or for
prolonged periods of time.
Systemic embryofetal development studies were conducted in rats and rabbits. Subcutaneous doses of
0.6, 1.8 and 5.4 mg/kg/day hydrocortisone butyrate were administered to pregnant female rats during
gestation days 6 . 17. In the presence of maternal toxicity, fetal effects noted at 5.4 mg/kg/day (2X
MTHD) included an increased incidence of ossification variations and unossified sternebra. No
treatment-related effects on embryofetal toxicity or teratogenicity were noted at doses of 5.4 and 1.8
mg/kg/day, respectively (2X MTHD and 0.7X MTHD, respectively).
Subcutaneous doses of 0.1, 0.2 and 0.3 mg/kg/day hydrocortisone butyrate were administered to
pregnant female rabbits during gestation days 7 . 20. An increased incidence of abortion was noted at
0.3 mg/kg/day (0.2X MTHD). In the absence of maternal toxicity, a dose-dependent decrease in fetal
body weight was noted at doses ≥0.1 mg/kg/day (0.1X MTHD). Additional indicators of embryofetal
toxicity (reduction in litter size, decreased number of viable fetuses, increased post-implantation loss)
were noted at doses ≥0.2 mg/kg/day (0.2X MTHD). Additional fetal effects noted in this study included
delayed ossification noted at doses ≥0.1 mg/kg/day and an increased incidence of fetal malformations
(primarily skeletal malformations) noted at doses ≥0.2 mg/kg/day. A dose at which no treatment-related
effects on embryofetal toxicity or teratogenicity were observed was not established in this study.
Additional systemic embryofetal development studies were conducted in rats and mice. Subcutaneous
doses of 0.1 and 9 mg/kg/day hydrocortisone butyrate were administered to pregnant female rats during
gestation days 9 . 15. In the presence of maternal toxicity, an increase in fetal deaths and fetal
resorptions and an increase in the number of ossifications in caudal vertebrae were noted at a dose of 9
mg/kg/day (3X MTHD). No treatment-related effects on embryofetal toxicity or teratogenicity were
noted at 0.1 mg/kg/day (0.1X MTHD).
Subcutaneous doses of 0.2 and 1 mg/kg/day hydrocortisone butyrate were administered to pregnant
female mice during gestation days 7 . 13. In the absence of maternal toxicity, an increased number of
cervical ribs and one fetus with clubbed legs were noted at a dose of 1 mg/kg/day (0.2X MTHD). No
treatment-related effects on embryofetal toxicity or teratogenicity were noted at doses of 1 and 0.2
mg/kg/day, respectively (0.2X MTHD and 0.1X MTHD, respectively).
No topical embryofetal development studies were conducted with hydrocortisone butyrate solution.
However, topical embryofetal development studies were conducted in rats and rabbits with a
hydrocortisone butyrate ointment formulation. Topical doses of 1% and 10% hydrocortisone butyrate
ointment were administered to pregnant female rats during gestation days 6 . 15 or pregnant female
rabbits during gestation days 6 . 18. A dose-dependent increase in fetal resorptions was noted in rabbits
(0.2 . 2X MTHD) and fetal resorptions were noted in rats at the 10% hydrocortisone butyrate ointment
dose (80X MTHD). No treatment-related effects on embryofetal toxicity were noted at the 1%
hydrocortisone butyrate ointment dose in rats (8X MTHD). A dose at which no treatment-related effects
on embryofetal toxicity were observed in rabbits after topical administration of hydrocortisone butyrate
ointment was not established in this study. No treatment-related effects on teratogenicity were noted at a
dose of 10% hydrocortisone butyrate ointment in rats or rabbits (80X MTHD and 2X MTHD,
respectively).
A peri- and post-natal development study was conducted in rats. Subcutaneous doses of 0.6, 1.8 and 5.4
mg/kg/day hydrocortisone butyrate were administered to pregnant female rats from gestation day 6 .
lactation day 20. In the presence of maternal toxicity, a dose-dependent decrease in fetal weight was
noted at doses ≥1.8 mg/kg/day (0.7X MTHD). No treatment-related effects on fetal toxicity were noted
at 0.6 mg/kg/day (0.2X MTHD). A delay in sexual maturation was noted at 5.4 mg/kg/day (2X MTHD).
No treatment-related effects on sexual maturation were noted at 1.8 mg/kg/day. No treatment-related
effects on behavioral development or subsequent reproductive performance were noted at 5.4
mg/kg/day.
Nursing Mothers
It is not known whether topical administration of corticosteroids could result in sufficient systemic
absorption to produce detectable quantities in breast milk. Systemically administered corticosteroids are
secreted into breast milk in quantities not likely to have a deleterious effect on the infant. Nevertheless,
caution should be exercised when topical corticosteroids are administered to nursing women.
Pediatric Use
Pediatric patients may demonstrate greater susceptibility to topical corticosteroid-induced HPA axis
suppression and Cushing´s syndrome than mature patients because of a larger skin surface area to body
weight ratio.
Hypothalamic-pituitary-adrenal (HPA) axis suppression, Cushingfs syndrome, linear growth retardation,
delayed weight gain, and intracranial hypertension have been reported in children receiving topical
corticosteroids.
Manifestations of adrenal suppression in children include low plasma cortisol levels and absence of
response to ACTH stimulation. Manifestations of intracranial hypertension include bulging fontanelles,
headaches, and bilateral papilledema.
Administration of topical corticosteroids to children should be limited to the least amount compatible
with an effective therapeutic regimen. Chronic corticosteroid therapy may interfere with the growth
and development of children.