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Nystatin 100 000 units/ml oral suspension?

See the DrugPatentWatch profile for Nystatin

Nystatin 100 000 U/mL Oral Suspension

(brand name: Mycostatin®, Natacyn®, etc.)

1. What is it?

  • Drug class: Polyene antifungal
  • Mechanism: Binds to ergosterol in fungal cell membranes, creating pores that increase permeability and cause cell death.

2. Primary Indications

  • Oral candidiasis (thrush) in children and adults
  • Fungal infections of the mouth and pharynx
  • Topical treatment for some cutaneous infections (not the oral suspension)

(Note: It is not an antifungal for systemic infections.)

3. Typical Adult Dosage (Oral Suspension)

Age Dose Frequency Notes
Adults & Children >12 mo 5 mL (≈ 500 000 U) 3–4×/day Swish in mouth, then swallow.
Children 6–12 mo 2.5 mL (≈ 250 000 U) 3–4×/day Adjust according to weight.

Course length: 7–14 days (extend if symptoms persist).
Tolerability: Mild GI upset is common; advise patient to avoid eating/drinking 30 min before next dose.

⚠️ Do not exceed the labeled dose; the suspension is not intended for intravenous or systemic use.

4. Common Adverse Effects

Symptom Frequency
Nausea, vomiting, diarrhea < 5 %
Oral irritation/itching ~ 2–4 %
Mild allergic reaction (rash, pruritus) < 1 %

Severe hypersensitivity (anaphylaxis) is very rare but requires immediate medical care.

5. Contraindications

  • Known hypersensitivity to nystatin or any component of the suspension
  • Severe hepatic impairment (rarely relevant for oral use but noted in prescribing info)

6. Drug Interactions

  • Minimal systemic absorption → few systemic interactions.
  • Topical interactions: No significant interactions with oral medications.
  • Caution with other topical antifungals: concurrent use may increase local irritation.

7. Special Populations

Population Considerations
Pregnancy/Breastfeeding Generally considered safe; still consult healthcare provider.
Renal impairment No dose adjustment needed.
Pediatrics (<6 mo) Not recommended; limited data.

8. Patient Counseling Points

  • How to use: Shake well. Measure the dose with a measuring cup or syringe. Swish for 30–60 s before swallowing.
  • Avoid food/drink for 30 min after each dose to maximize contact.
  • Finish the course even if symptoms improve earlier to prevent recurrence.
  • Watch for signs of an allergic reaction (rash, swelling, difficulty breathing). Seek medical help if they occur.
  • Do not share medication with others.

9. Storage & Handling

  • Store at 20–25 °C (room temperature).
  • Keep the bottle tightly closed and out of direct sunlight.
  • Discard after 6 months from the first opening (check the label for specific shelf‑life).

Quick FAQ

Question Answer
Can it be used for skin fungal infections? The oral suspension is meant for mouth/thrush. For skin, use an over‑the‑counter nystatin cream or other topical antifungals.
What if I miss a dose? Take it as soon as you remember. If it’s almost time for the next dose, skip the missed one and resume the regular schedule. Do not double‑dose.
Will it kill gut flora? Very little systemic absorption; minimal impact on gut flora.
Is it safe with other antifungals? Generally safe; however, using multiple antifungals may increase local irritation.

Disclaimer:
This information is for educational purposes only and does not replace individualized medical advice. If you have questions about your specific health condition, dosage, or potential interactions, consult your prescribing clinician or pharmacist.



Other Questions About Nystatin :

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AI-Drug Label Prescribing Information Alignment Report

68
68%
Grade C

Partial

Mostly Aligned

Patient Risk: Low

Summary

Partial alignment. The claims align with aspects of the Cream label (topical use for cutaneous infections, non-systemic use, contraindications, minimal systemic absorption, storage considerations), but numerous claims reference oral suspension dosing, oral indications, and pediatric use that are not supported by the provided Cream label. The mixture of topical-label content with non-applicable suspension indications reduces overall alignment.

Category Scores

Indication
60
Partial
Indication
60
Partial
Contraindications
100
Excellent
Indication
60
Partial
Contraindications
100
Excellent
Indication
60
Partial
AdverseReactions
50
Partial
Administration
70
Good

Accurate Statements

Topical treatment for cutaneous infections (not the oral suspension).
INDICATIONS AND USAGE
Note: It is not an antifungal for systemic infections.
INDICATIONS AND USAGE
Contraindication: Known hypersensitivity to nystatin or any component of the suspension.
CONTRAINDICATIONS
Drug interactions: Minimal systemic absorption → few systemic interactions.
PHARMACOKINETICS

Unsupported Statements

Nystatin is a polyene antifungal.
LABEL DOES NOT STATE CLASSIFICATION
Indication: Oral candidiasis (thrush) in children and adults.
Label indicates Nystatin Cream USP is not indicated for oral use.
Indication: Fungal infections of the mouth and pharynx.
Cream label does not indicate oral/oropharyngeal use.
Dosage (adults & children > 12 months, oral suspension): 5 mL (≈ 500,000 U) 3–4×/day; Swish in mouth, then swallow.
Label does not provide oral suspension dosing for Cream.
Dosage (children 6–12 months, oral suspension): 2.5 mL (≈ 250,000 U) 3–4×/day; Adjust according to weight.
Label does not provide oral suspension dosing for Cream.
Course length: 7–14 days (extend if symptoms persist).
Label for Cream does not specify course length for oral suspension; not applicable to Cream label.
Tolerability: Mild GI upset is common; advise patient to avoid eating/drinking 30 min before next dose.
Label does not provide this dosing guidance for topical Cream.
Pediatrics (<6 months): Not recommended; limited data.
Pediatric Use: Safety and effectiveness established from birth to 16 years.
Holistic administration instructions (shake well, measure with cup, swish 30–60 s, avoid food/drink 30 min after) for suspension.
Label content provided here pertains to Cream and does not include suspension-directed instructions.

Contradictions

Low

AI Statement
Indication: Oral candidiasis (thrush) in children and adults.

Label Reference
INDICATIONS AND USAGE

Important Omissions

Pediatric dosing specifics for ages outside the established label (birth to 16 years) as they pertain to the Cream product; oral suspension dosing details; explicit storage and shelf-life for the Cream product.
Importance: Moderate

Safety Assessment

Potential Patient Risk: Low
Label indicates topical use with minimal systemic absorption and limited systemic interactions.

Regulatory Assessment

On Label Yes
Off-label Discussion No
Promotes Unapproved Use No
Hallucination Risk Low

Recommendation

Mostly Aligned

Primary Issue
Formulation mismatch: claims reference oral suspension/indications not supported by the Cream label; ensure claims align with product form.

Suggested Improvement
Limit AI-generated claims to the Cream label indications and administration; clearly separate any claims pertaining to oral suspension if the label is for a different product; include suspension-specific dosing only if applicable to the labeled product.