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Synalar

Last reviewed on RxList: 12/9/2020
Drug Description

What is Synalar and how is it used?

Synalar (fluocinolone acetonide) Cream is a topical (for the skin) steroid used to treat the inflammation and itching caused by a number of skin conditions such as allergic reactions, eczema, seborrhea, and psoriasis. Synalar is available in generic form.

What are side effects of Synalar?

Common side effects of Synalar Cream include:

  • stinging,
  • burning,
  • itching,
  • irritation,
  • dryness,
  • peeling, or
  • redness at the application site when this medication is first applied to the skin.

These side effects should disappear in a few days as your body adjusts to Synalar Cream. Other side effects of Synalar Cream include:

  • thinning or softening of your skin,
  • swollen hair follicles,
  • blisters,
  • pimples,
  • crusting of treated skin,
  • changes in color of treated skin,
  • skin rash or irritation around your mouth, or
  • stretch marks.

Skin infections can become worse when Synalar Cream is used. Notify your doctor if redness, swelling, or irritation does not improve.

DESCRIPTION

SYNALAR® (fluocinolone acetonide) Topical Solution, 0.01% is intended for topical administration. The active component is the corticosteroid fluocinolone acetonide, which has the chemical name pregna-1,4-diene-3,20-dione,6,9-difluoro-11,21­dihydroxy-16,17-[(1-methylethylidene)bis (oxy)]-,(6α,11β,16α)-. It has the following chemical structure:

SYNALAR® (fluocinolone acetonide) Structural Formula Illustration

SYNALAR® Solution contains fluocinolone acetonide 0.1 mg/mL in a water-washable base of citric acid and propylene glycol.

Indications & Dosage

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INDICATIONS

SYNALAR® Cream is indicated for the relief of the inflammatory and pruritic manifestations of corticosteriod-responsive dermatoses.

DOSAGE AND ADMINISTRATION

SYNALAR® Cream is generally applied to the affected area as a thin film from two to four times daily depending on the severity of the condition. In hairy sites, the hair should be parted to allow direct contact with the lesion.

Occlusive dressing may be used for the management of psoriasis or recalcitrant conditions. Some plastic films may be flammable and due care should be exercised in their use. Similarly, caution should be employed when such films are used on children or left in their proximity, to avoid the possibility of accidental suffocation.

If an infection develops, the use of the occlusive dressings should be discontinued and appropriate antimicrobial therapy instituted.

HOW SUPPLIED

SYNALAR® (fluocinolone acetonide) Cream 0.025% is supplied in

  • 60 g Tube - NDC 43538-900-60
  • 120 g Tube - NDC 43538-900-12

Storage

Store at room temperature 15-25°C (59-77°F); avoid freezing and excessive heat above 40°C (104°F).

Manufactured by: Teligent Pharma, Inc., Buena, NJ 08310 IP027-R2. Revised: Nov 2016

QUESTION

Ringworm is caused by a fungus. See Answer
Side Effects & Drug Interactions

SIDE EFFECTS

The following local adverse reactions are reported infrequently with topical corticosteroids, but may occur more frequently with the use of occlusive dressings. These reactions are listed in an approximate decreasing order of occurrence:

BurningHypertrichosisMaceration of the skin
ItchingAcneiform eruptionsSecondary infection
IrritationHypopigmentationSkin atrophy
DrynessPerioral dermatitisStriae
FolliculitisAllergic contact dermatitisMiliaria

DRUG INTERACTIONS

No Information Provided

Warnings & Precautions

WARNINGS

Included as part of the PRECAUTIONS section.

PRECAUTIONS

General

Systemic absorption of topical corticosteroids has produced reversible hypothalamic-pituitary-adrenal (HPA) axis suppression, manifestations of Cushing's syndrome, hyperglycemia, and glucosuria in some patients.

Conditions which augment systemic absorption include the application of the more potent steroids, use over large surface areas, prolonged use, and the addition of occlusive dressings.

Therefore, patients receiving a large dose of a potent topical steroid applied to a large surface area or under an occlusive dressing should be evaluated periodically for evidence of HPA axis suppression by using the urinary free cortisol and 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 steroid.

Recovery of HPA axis function is generally prompt and complete upon discontinuation of the drug. Infrequently, signs and symptoms of steroid 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 PRECAUTIONS - Pediatric Use).

If irritation develops, topical corticosteroids should be discontinued and appropriate therapy instituted.

As with any topical corticosteroid product, prolonged use may produce atrophy of the skin and subcutaneous tissues. When used on intertriginous or flexor areas, or on the face, this may occur even with short-term use.

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.

Laboratory Tests

The following tests may be helpful in evaluating the HPA axis suppression:

  • Urinary free cortisol test
  • ACTH stimulation test

Carcinogenesis, Mutagenesis, And Impairment Of Fertility

Long-term animal studies have not been performed to evaluate the carcinogenic potential or the effect on fertility of topical corticosteroids.

Studies to determine mutagenicity with prednisolone and hydrocortisone have revealed negative results.

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.

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 a nursing woman.

Pediatric Use

Pediatric patients may demonstrate greater susceptibility to topical corticosteroidinduced hypothalmic-pituitary-adrenal (HPA) axis suppression and Cushing's syndrome than mature patients because of a larger skin surface area to body weight ratio.

HPA axis suppression, Cushing's syndrome, and intracranial hypertension have been reported in children receiving topical corticosteroids. Manifestations of adrenal suppression in children include linear growth retardation, delayed weight gain, 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.

Overdosage & Contraindications

OVERDOSE

Topically applied corticosteroids can be absorbed in sufficient amounts to produce systemic effects (see PRECAUTIONS).

CONTRAINDICATIONS

Topical corticosteroids are contraindicated in those patients with a history of hypersensitivity to any of the components of the preparation.

Clinical Pharmacology

CLINICAL PHARMACOLOGY

Topical corticosteroids share anti-inflammatory, anti-pruritic and vasoconstrictive actions.

The mechanism of anti-inflammatory activity of the topical corticosteroids is unclear. Various laboratory methods, including vasoconstrictor assays, are used to compare and predict potencies and/or clinical efficacies of the topical corticosteroids. There is some evidence to suggest that a recognizable correlation exists between vasoconstrictor potency and therapeutic efficacy in man.

Pharmacokinetics

The extent of percutaneous absorption of topical corticosteroids is determined by many factors including the vehicle, the integrity of the epidermal barrier, and the use of occlusive dressings.

Topical corticosteroids can be absorbed from normal intact skin. Inflammation and/or other disease processes in the skin increase percutaneous absorption. Occlusive dressings substantially increase the percutaneous absorption of topical corticosteroids. Thus, occlusive dressings may be a valuable therapeutic adjunct for treatment of resistant dermatoses (see DOSAGE AND ADMINISTRATION).

Once absorbed through the skin, topical corticosteroids are handled through pharmacokinetic pathways similar to systemically administered corticosteroids. Corticosteroids are bound to plasma proteins in varying degrees. Corticosteroids are metabolized primarily in the liver and are then excreted by the kidneys. Some of the topical corticosteroids and their metabolites are also excreted into the bile.

Medication Guide

PATIENT INFORMATION

Patients using topical corticosteroids should receive the following information and instructions:

  1. This medication is to be used as directed by the physician. It is for external use only. Avoid contact with the eyes.
  2. Patients should be advised not to use this medication for any disorder other than that for which it was prescribed.
  3. The treated skin area should not be bandaged or otherwise covered or wrapped as to be occlusive unless directed by the physician.
  4. Patients should report any signs of local adverse reactions, especially under occlusive dressing.
  5. Parents of pediatric patients should be advised not to use tight-fitting diapers or plastic pants on a child being treated in the diaper area, as these garments may constitute occlusive dressings.
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