Nystamysyn (Nystatin)

Nystatin, the active ingredient in Nystamysyn, is an antifungal polyol polyfungal polyphenol presented as a topical formulation for cutaneous and mucosal use. It treats superficial fungal infections such as candidiasis in infants, children, and adults.

GNH USA supplies Nystamysyn as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, transplant centres and pharmacies worldwide.

Nystamysyn is an antifungal agent that acts on yeast and mold species causing mucocutaneous infections. - Oral thrush (candidiasis): Reduces fungal load and alleviates symptoms such as soreness. - Esophageal candidiasis: Helps clear infection and improve swallowing comfort. - Dermal candidiasis: Controls skin colonisation and promotes healing. - Vaginal candidiasis: Restores normal flora and reduces discharge and itching.

Nystamysyn may elicit adverse reactions that vary in frequency and severity.

Common Side Effects: - Mild gastrointestinal upset: Nausea or stomach discomfort. - Local irritation: Burning or itching at the application site. - Rash: Minor skin erythema. - Taste alteration: Temporary dysgeusia.

Serious or Rare Side Effects: - Severe allergic reaction: Hives, swelling, or anaphylaxis. - Hepatotoxicity: Elevated liver enzymes indicating liver stress. - Renal impairment: Changes in kidney function tests. - Persistent diarrhea: Prolonged watery stools indicating possible infection spread.

Before prescribing Nystamysyn, clinicians should consider several safety aspects. - Renal function: Assess renal clearance as nystatin is excreted unchanged. - Hepatic function: Monitor liver enzymes in patients with pre‑existing liver disease. - Pregnancy: Use only if clearly needed; limited data suggest caution. - Breastfeeding: Evaluate risk‑benefit as small amounts may pass into milk. - Concomitant antibiotics: Watch for overgrowth of resistant organisms. - Store at below 25°C: Keep in the original container, protect from moisture and direct sunlight.

Nystamysyn has a limited interaction profile, but certain combinations require attention.

Major Interactions (Avoid): - Systemic azoles: Concurrent use may reduce nystatin efficacy. - Live‑vaccines: May increase risk of fungal infection when immune response is suppressed.

Moderate Interactions (Monitor Closely):\n- Broad‑spectrum antibiotics: May alter normal flora and predispose to fungal overgrowth. - Immunosuppressants: May require dose adjustment of antifungal therapy. - Proton‑pump inhibitors: May affect gastric pH and drug dissolution. - Antacids: May reduce local availability of the drug in the GI tract.