General
Intranasal corticosteroids may cause a reduction in growth
velocity when administered to pediatric patients (see PRECAUTIONS:
Pediatric
Use).
Rarely, immediate hypersensitivity reactions or contact dermatitis may occur
after the administration of fluticasone propionate nasal spray. Rare instances
of wheezing, nasal septum perforation, cataracts, glaucoma, and increased
intraocular pressure have been reported following the intranasal application of
corticosteroids, including fluticasone propionate.
Use of excessive doses of corticosteroids may lead to signs or symptoms of
hypercorticism and/or suppression of HPA function.
Although systemic effects have been minimal with recommended doses of
fluticasone propionate nasal spray, potential risk increases with larger doses.
Therefore, larger than recommended doses of fluticasone propionate nasal spray
should be avoided.
When used at higher than recommended doses or in rare individuals at
recommended doses, systemic corticosteroid effects such as hypercorticism and
adrenal suppression may appear. If such changes occur, the dosage of fluticasone
propionate nasal spray should be discontinued slowly consistent with accepted
procedures for discontinuing oral corticosteroid therapy.
In clinical studies with fluticasone propionate administered intranasally,
the development of localized infections of the nose and pharynx with Candida albicans has occurred only rarely. When such an
infection develops, it may require treatment with appropriate local therapy and
discontinuation of treatment with fluticasone propionate nasal spray. Patients
using fluticasone propionate nasal spray over several months or longer should be
examined periodically for evidence of Candida
infection or other signs of adverse effects on the nasal mucosa.
Intranasal corticosteroids should be used with caution, if at all, in
patients with active or quiescent tuberculous infections of the respiratory
tract; untreated local or systemic fungal or bacterial infections; systemic
viral or parasitic infections; or ocular herpes simplex.
Because of the inhibitory effect of corticosteroids on wound healing,
patients who have experienced recent nasal septal ulcers, nasal surgery, or
nasal trauma should not use a nasal corticosteroid until healing has
occurred.
Information for Patients
Patients being treated with fluticasone propionate nasal spray
should receive the following information and instructions. This information is
intended to aid them in the safe and effective use of this medication. It is not
a disclosure of all possible adverse or intended effects.
Patients should be warned to avoid exposure to chickenpox or measles and, if
exposed, to consult their physician without delay.
Patients should use fluticasone propionate nasal spray at regular intervals
for optimal effect. Some patients (12 years of age and older) with seasonal
allergic rhinitis may find as-needed use of 200 mcg once daily effective for
symptom control (see CLINICAL
TRIALS).
A decrease in nasal symptoms may occur as soon as 12 hours after starting
therapy with fluticasone propionate nasal spray. Results in several clinical
trials indicate statistically significant improvement within the first day or
two of treatment; however, the full benefit of fluticasone propionate nasal
spray may not be achieved until treatment has been administered for several
days. The patient should not increase the prescribed dosage but should contact
the physician if symptoms do not improve or if the condition worsens.
For the proper use of fluticasone propionate nasal spray and to attain
maximum improvement, the patient should read and follow carefully the patient’s
instructions accompanying the product.
Drug Interactions
Fluticasone propionate is a substrate of cytochrome P450 3A4. A
drug interaction study with fluticasone propionate aqueous nasal spray in
healthy subjects has shown that ritonavir (a highly potent cytochrome P450 3A4
inhibitor) can significantly increase plasma fluticasone propionate exposure,
resulting in significantly reduced serum cortisol concentrations (see CLINICAL
PHARMACOLOGY: Drug
Interactions). During postmarketing use, there have been reports of
clinically significant drug interactions in patients receiving fluticasone
propionate and ritonavir, resulting in systemic corticosteroid effects including
Cushing syndrome and adrenal suppression. Therefore, coadministration of
fluticasone propionate and ritonavir is not recommended unless the potential
benefit to the patient outweighs the risk of systemic corticosteroid side
effects.
In a placebo-controlled, crossover study in 8 healthy volunteers,
coadministration of a single dose of orally inhaled fluticasone propionate
(1,000 mcg; 5 times the maximum daily intranasal dose) with multiple doses of
ketoconazole (200 mg) to steady state resulted in increased plasma fluticasone
propionate exposure, a reduction in plasma cortisol AUC, and no effect on
urinary excretion of cortisol. Caution should be exercised when fluticasone
propionate nasal spray is coadministered with ketoconazole and other known
potent cytochrome P450 3A4 inhibitors.
Carcinogenesis, Mutagenesis, Impairment of
Fertility
Fluticasone propionate demonstrated no tumorigenic potential in
mice at oral doses up to 1,000 mcg/kg (approximately 20 times the maximum
recommended daily intranasal dose in adults and approximately 10 times the
maximum recommended daily intranasal dose in children on a mcg/m2 basis) for 78 weeks or in rats at inhalation doses up to 57
mcg/kg (approximately 2 times the maximum recommended daily intranasal dose in
adults and approximately equivalent to the maximum recommended daily intranasal
dose in children on a mcg/m2 basis) for 104 weeks.
Fluticasone propionate did not induce gene mutation in prokaryotic or
eukaryotic cells in vitro. No significant clastogenic
effect was seen in cultured human peripheral lymphocytes in
vitro or in the mouse micronucleus test.
No evidence of impairment of fertility was observed in reproductive studies
conducted in male and female rats at subcutaneous doses up to 50 mcg/kg
(approximately 2 times the maximum recommended daily intranasal dose in adults
on a mcg/m2 basis). Prostate weight was significantly
reduced at a subcutaneous dose of 50 mcg/kg.
PregnancyTeratogenic EffectsPregnancy Category C
Subcutaneous studies in the mouse and rat at 45 and 100 mcg/kg,
respectively (approximately equivalent to and 4 times, respectively, the maximum
recommended daily intranasal dose in adults on a mcg/m2
basis) revealed fetal toxicity characteristic of potent corticosteroid
compounds, including embryonic growth retardation, omphalocele, cleft palate,
and retarded cranial ossification.
In the rabbit, fetal weight reduction and cleft palate were observed at a
subcutaneous dose of 4 mcg/kg (less than the maximum recommended daily
intranasal dose in adults on a mcg/m2 basis). However, no
teratogenic effects were reported at oral doses up to 300 mcg/kg (approximately
25 times the maximum recommended daily intranasal dose in adults on a mcg/m2 basis) of fluticasone propionate to the rabbit. No
fluticasone propionate was detected in the plasma in this study, consistent with
the established low bioavailability following oral administration (see CLINICAL
PHARMACOLOGY).
Fluticasone propionate crossed the placenta following oral administration of
100 mcg/kg to rats or 300 mcg/kg to rabbits (approximately 4 and 25 times,
respectively, the maximum recommended daily intranasal dose in adults on a
mcg/m2 basis).
There are no adequate and well-controlled studies in pregnant women.
Fluticasone propionate should be used during pregnancy only if the potential
benefit justifies the potential risk to the fetus.
Experience with oral corticosteroids since their introduction in
pharmacologic, as opposed to physiologic, doses suggests that rodents are more
prone to teratogenic effects from corticosteroids than humans. In addition,
because there is a natural increase in corticosteroid production during
pregnancy, most women will require a lower exogenous corticosteroid dose and
many will not need corticosteroid treatment during pregnancy.
Nursing Mothers
It is not known whether fluticasone propionate is excreted in
human breast milk. However, other corticosteroids have been detected in human
milk. Subcutaneous administration to lactating rats of 10 mcg/kg or tritiated
fluticasone propionate (less than the maximum recommended daily intranasal dose
in adults on a mcg/m2 basis) resulted in measurable
radioactivity in the milk. Since there are no data from controlled trials on the
use of intranasal fluticasone propionate by nursing mothers, caution should be
exercised when fluticasone propionate nasal spray is administered to a nursing
woman.
Pediatric Use
Six hundred fifty (650) patients aged 4 to 11 years and 440
patients aged 12 to 17 years were studied in US clinical trials with fluticasone
propionate nasal spray. The safety and effectiveness of fluticasone propionate
nasal spray in children below 4 years of age have not been established.
Controlled clinical studies have shown that intranasal corticosteroids may
cause a reduction in growth velocity in pediatric patients. This effect has been
observed in the absence of laboratory evidence of HPA axis suppression,
suggesting that growth velocity is a more sensitive indicator of systemic
corticosteroid exposure in pediatric patients than some commonly used tests of
HPA axis function. The long-term effects of this reduction in growth velocity
associated with intranasal corticosteroids, including the impact on final adult
height, are unknown. The potential for “catch-up” growth following
discontinuation of treatment with intranasal corticosteroids has not been
adequately studied. The growth of pediatric patients receiving intranasal
corticosteroids, including fluticasone propionate nasal spray, should be
monitored routinely (e.g. via stadiometry). The potential growth effects of
prolonged treatment should be weighed against the clinical benefits obtained and
the risks/benefits of treatment alternatives. To minimize the systemic effects
of intranasal corticosteroids, including fluticasone propionate nasal spray,
each patient should be titrated to the lowest dose that effectively controls
his/her symptoms.
A 1-year placebo-controlled clinical growth study was conducted in 150
pediatric patients (ages 3 to 9 years) to assess the effect of fluticasone
propionate nasal spray (single daily dose of 200 mcg, the maximum approved dose)
on growth velocity. From the primary population of 56 patients receiving
fluticasone propionate nasal spray and 52 receiving placebo, the point estimate
for growth velocity with fluticasone propionate nasal spray was 0.14 cm/year
lower than that noted with placebo (95% confidence interval ranging from 0.54
cm/year lower than placebo to 0.27 cm/year higher than placebo). Thus, no
statistically significant effect on growth was noted compared to placebo. No
evidence of clinically relevant changes in HPA axis function or bone mineral
density was observed as assessed by 12-hour urinary cortisol excretion and
dual-energy x-ray absorptiometry, respectively.
The potential for fluticasone propionate nasal spray to cause growth
suppression in susceptible patients or when given at higher doses cannot be
ruled out.
Geriatric Use
A limited number of patients above 65 years of age and older
(N=129) or 75 years of age and older (N=11) have been treated with fluticasone
propionate nasal spray in US and non-US clinical trials. While the number of
patients is too small to permit separate analysis of efficacy and safety, the
adverse reactions reported in this population were similar to those reported by
younger patients.