Nystatin And Triamcinolone Acetonide - Nystatin And Triamcinolone Acetonide ointment prescribing information
INDICATIONS AND USAGE
Nystatin and triamcinolone acetonide ointment is indicated for the treatment of cutaneous candidiasis; it has been demonstrated that the nystatin-steroid combination provides greater benefit than the nystatin component alone during the first few days of treatment.
DOSAGE AND ADMINISTRATION
A thin film of nystatin and triamcinolone acetonide ointment is usually applied to the affected areas twice daily in the morning and evening. The preparation should be discontinued if symptoms persist after 25 days of therapy (see PRECAUTIONS, Laboratory Tests).
Nystatin and triamcinolone acetonide ointment should not be used with occlusive dressings.
CONTRAINDICATIONS
These preparations are contraindicated in those patients with a history of hypersensitivity to any of their components.
ADVERSE REACTIONS
A single case (approximately one percent of patients studied) of acneiform eruption occurred with use of combined nystatin and triamcinolone acetonide in clinical studies.
Nystatin is virtually nontoxic and nonsensitizing and is well tolerated by all age groups, even during prolonged use. Rarely, irritation may occur.
The following local adverse reactions are reported infrequently with topical corticosteroids (reactions are listed in an approximate decreasing order of occurrence): burning, itching, irritation, dryness, folliculitis, hypertrichosis, acneiform eruptions, hypopigmentation, perioral dermatitis, allergic contact dermatitis, maceration of the skin, perioral secondary infection, skin atrophy, striae and miliaria.
DESCRIPTION
Nystatin and Triamcinolone Acetonide Ointment USP for dermatologic use contains the antifungal agent nystatin, USP and the synthetic corticosteroid triamcinolone acetonide, USP.
Nystatin, USP is a polyene antimycotic obtained from Streptomyces noursei . It is a yellow to light tan powder, having an odor suggestive of cereals. Is hygroscopic, and is affected by long exposure to light, heat, and air. It freely soluble in dimethylformamide and in dimethyl sulfoxide, slightly to sparingly soluble in methanol, in n-propyl alcohol, and in n-butyl alcohol, practically insoluble in water and in alcohol; insoluble in chloroform and in ether.
Structural formula:
- C 47 H 75 NO 17 MW = 926.11 g/mol
Triamcinolone acetonide, USP is designated chemically as Pregna-1, 4-diene-3,20-dione,9-fluoro-11,21-dihydroxy-16,17-[(1-methylethylidene)bis(oxy)]-,(11β,16α)-9-Fluoro-11β,16α,17,21-tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16, 17-acetal with acetone. The white to cream colored, crystalline powder, having not more than a slight odor, is practically insoluble in water, sparingly soluble in dehydrated alcohol, in chloroform and in methanol.
Structural formula:
- C 24 H 31 FO 6 MW = 434.50 g/mol
Each gram of Nystatin and Triamcinolone Acetonide Ointment provides 100,000 USP Nystatin units and 1 mg Triamcinolone Acetonide, USP in an ointment base of mineral oil and white petrolatum.
CLINICAL PHARMACOLOGY
Nystatin
Nystatin exerts its antifungal activity against a variety of pathogenic and nonpathogenic yeasts and fungi by binding to sterols in the cell membrane. The binding process renders the cell membrane incapable of functioning as a selective barrier. Nystatin provides specific anticandidal activity to Candida (Monilia) albicans and other Candida species, but is not active against bacteria, protozoa, trichomonads, or viruses.
Nystatin is not absorbed from intact skin or mucous membranes.
Triamcinolone Acetonide
Triamcinolone acetonide is primarily effective because of its anti-inflammatory, antipruritic and vasoconstrictive actions, characteristic of the topical corticosteroid class of drugs. The pharmacologic effects of the topical corticosteroids are well known; however, the mechanisms of their dermatologic actions are 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 (see DOSAGE AND ADMINISTRATION ).
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 (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.
Nystatin and Triamcinolone Acetonide
During clinical studies of mild to severe manifestations of cutaneous candidiasis, patients treated with nystatin and triamcinolone acetonide showed a faster and more pronounced clearing of erythema and pruritus than patients treated with nystatin or triamcinolone acetonide alone.
HOW SUPPLIED
Nystatin and Triamcinolone Acetonide Ointment, USP is supplied as follows:
- NDC 68462-799-17 15g tube (1 tube per carton)
- NDC 68462-799-35 30g tube (1 tube per carton)
- NDC 68462-799-65 60g tube (1 tube per carton)
STORAGE
Store at 20°C to 25°C (68°F to 77°F); [see USP Controlled Room Temperature]. Do not refrigerate and avoid freezing.
