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Nyamyc®
(nystatin) Topical Powder, USP 100,000 units per gram
Nystatin is a polyene antifungal antibiotic obtained from Streptomyces nursei.
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Nyamyc® (Nystatin Topical Powder, USP) is for dermatologic use.
Nyamyc® (Nystatin Topical Powder, USP) contains 100,000 USP nystatin units per gram dispersed in talc.
Nyamyc® (Nystatin Topical Powder, USP) is indicated in the treatment of cutaneous or mucocutaneous mycotic infections caused by Candida albicans and other susceptible Candida species.
Nyamyc® (Nystatin Topical Powder, USP) is not indicated for systemic, oral, intravaginal or ophthalmic use.
Very moist lesions are best treated with the topical dusting powder.
Apply to candidal lesions two or three times daily until healing is complete. For fungal infection of the feet caused by Candida species, the powder should be dusted on the feet, as well as, in all foot wear.
Nyamyc® (Nystatin Topical Powder, USP) 100,000 units nystatin per gram is available as follow:
Bottles of 15 g (NDC 0832-0465-15)
Bottles of 30 g (NDC 0832-0465-30)
Bottles of 60 g (NDC 0832-0465-60)
Nyamyc® (Nystatin Topical Powder, USP)
Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F) [See USP Controlled Room Temperature]. Avoid excessive heat (40°C/104°F). Keep tightly closed. Keep out of reach of children.
Manufactured by: UPSHER-SMITH LABORATORIES, LLC, Maple Grove, MN 55369. Revised : Apr 2018
The frequency of adverse events reported in patients using nystatin topical preparations is less than 0.1%. The more common events that were reported include allergic reactions, burning, itching, rash, eczema, and pain on application. [see PRECAUTIONS: General].
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Nyamyc® (Nystatin Topical Powder, USP) should not be used for the treatment of systemic, oral, intravaginal or ophthalmic infections.
If irritation or sensitization develops, treatment should be discontinued and appropriate measures taken as indicated. It is recommended that KOH smears, cultures, or other diagnostic methods be used to confirm the diagnosis of cutaneous or mucocutaneous candidiasis and to rule out infection caused by other pathogens.
If there is a lack of therapeutic response, KOH smears, cultures, or other diagnostic methods should be repeated.
No long-term animal studies have been performed to evaluate the carcinogenic potential of nystatin. No studies have been performed to determine the mutagenicity of nystatin or its effects on male or female fertility.
Category C
Animal reproduction studies have not been conducted with any nystatin topical preparation. It also is not known whether theses preparations can cause fetal harm when used by a pregnant woman or can affect reproductive capacity. Nyamyc® (Nystatin Topical Powder, USP) should be prescribed for a pregnant woman only if the potential benefit to the mother outweighs the potential risk to the fetus.
It is not known whether nystatin is excreted in human milk. Caution should be exercised when nystatin is prescribed for a nursing woman.
Safety and effectiveness have been established in the pediatric population from birth to 16 years. [see DOSAGE AND ADMINISTRATION].
Clinical studies with nystatin topical powder did not include sufficient numbers of subjects aged 65 years and older to determine whether they respond differently than younger subjects. Other reported clinical experience has not identified differences in responses between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.
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Nyamyc® (Nystatin Topical Powder, USP) is contraindicated in patients with a history of hypersensitivity to any of its components.
Nystatin is not absorbed from intact skin or mucous membrane.
Nystatin is an antibiotic which is both fungistatic and fungicidal in vitro against a wide variety of yeasts and yeast-like fungi, including Candida albicans, C. parapsilosis, C. tropicalis, C. guilliermondi, C. pseudotropicalis, C. krusei, Torulopsis glabrata, Tricophyton rubrum, T. mentagrophytes.
Nystatin acts by binding to sterols in the cell membrane of susceptible species resulting in a change in membrane permeability and the subsequent leakage of intracellular components. On repeated subculturing with increasing levels of nystatin, Candida albicans does not develop resistance to nystatin. Generally, resistance to nystatin does not develop during therapy. However, other species of Candida (C. tropicalis, C. guilliermondi, C. krusei, and C. stellatoides) become quite resistant on treatment with nystatin and simultaneously become cross resistant to amphotericin as well. This resistance is lost when the antibiotic is removed.
Nystatin exhibits no appreciable activity against bacteria, protozoa, or viruses.
Patients using this medication should receive the following information and instructions:
