Nystatin 500,000 Units Tablets

Generic For: Mycostatin

Nystatin 500,000 units (brand name Mycostatin) is a prescription antifungal tablet used to treat intestinal candidiasis — an overgrowth of Candida yeast in the gastrointestinal tract. Because it is minimally absorbed, nystatin 500 acts locally in the gut where the infection lives. After a licensed provider reviews your prescription, your order ships from a licensed U.S. pharmacy.

Select Quantity *

28-day supply · $0.60/tablet

How It Works

  1. Select your medication
  2. Licensed providers review & prescribe
  3. Our licensed U.S. pharmacists fill your prescription
  4. Delivered to you as soon as the next day

Price: $60.00

HSA/FSA Eligible
Get Started

*Doctor visit fee & delivery cost not included in price. Refills at provider discretion.

Pharmacist Support Fast Shipping Licensed U.S. Pharmacy

Buy Nystatin 500,000 Units Tablets Online

Antifungal tablet for intestinal candidiasis (Candida yeast infections of the GI tract)

Nystatin 500,000 Units Tablets Quick Facts

Drug classPolyene antifungal
TreatsIntestinal candidiasis, GI Candida overgrowth
FormTablet
Typical dosingTake 1 tablet by mouth 4 times daily for 14 days.
Prescription requiredYes — prescription only

What Is Nystatin 500,000 Units Tablets?

Nystatin 500,000 units is an oral antifungal tablet in the polyene class, sold under the brand name Mycostatin. It works by binding to the fungal cell membrane, causing the cell contents to leak out, which stops the growth of Candida yeast. Nystatin tablets are barely absorbed from the digestive tract, so they act directly on yeast in the intestines rather than throughout the body. This makes nystatin 500 suitable for treating candidiasis of the intestinal tract, but not for systemic (bloodstream) fungal infections.

What Does Nystatin 500,000 Units Tablets Treat?

Intestinal candidiasis (Candida infection of the GI tract)
Non-esophageal gastrointestinal Candida overgrowth
Candidiasis of the intestinal mucosa
Adjunct to topical therapy when GI Candida is a suspected source of recurrence

Nystatin 500,000 Units Tablets Dosage

Take 1 to 2 tablets (500,000 to 1,000,000 units) by mouth three times daily.
Continue treatment for at least 48 hours after clinical cure to prevent relapse.

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Nystatin 500,000 Units Tablets Side Effects

Common side effects

  • Nausea
  • Vomiting
  • Diarrhea
  • Stomach upset or pain
  • Oral irritation
  • Bitter or unpleasant taste
  • Rash

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

  • Severe allergic reaction (hives, swelling of face or throat, trouble breathing)
  • Stevens-Johnson syndrome (severe blistering skin rash)
  • Rapid heartbeat (tachycardia)
  • Bronchospasm (wheezing, difficulty breathing)
  • Facial swelling (angioedema)

Warnings & Interactions

Do not use if you are allergic to nystatin or any ingredient in the tablet
Not effective for systemic (bloodstream) fungal infections
Stop use and contact your provider if irritation, rash, or signs of allergy occur
Complete the full prescribed course even if symptoms improve
Tell your provider if you are pregnant or breastfeeding before use
Contact your provider if symptoms do not improve or worsen during treatment

Tell your prescriber about all medications, supplements, and health conditions before starting nystatin 500,000 units tablets.

Talk to U.S.-Based Support

Our licensed pharmacy team in Boca Raton, Florida — real people, no overseas call centers.

Frequently Asked Questions

What is nystatin 500 used for?

Nystatin 500,000 unit tablets are used to treat intestinal candidiasis, a Candida yeast infection of the gastrointestinal tract. Because the medicine is minimally absorbed, it works directly in the gut and is not used for bloodstream or systemic fungal infections.

Do I need a prescription for nystatin 500,000 unit tablets?

Yes, nystatin tablets are a prescription-only medication in the United States. A licensed healthcare provider must review your health information and issue a valid prescription before the pharmacy can dispense it.

How do ordering and shipping work?

After you place your order, a licensed provider or pharmacist reviews your prescription and medical information. Once approved, your medication is dispensed and shipped from a licensed U.S. pharmacy, and a pharmacist is available to answer questions.

How do I take nystatin tablets?

The usual adult dose is 1 to 2 tablets (500,000 to 1,000,000 units) taken by mouth three times a day. Treatment is generally continued for at least 48 hours after symptoms resolve; always follow your prescriber's directions.

Is nystatin the same as Mycostatin?

Yes, Mycostatin is a brand name for nystatin. Both contain the same active antifungal ingredient and are used the same way per FDA labeling.

What are the most common side effects of nystatin tablets?

The most common side effects are gastrointestinal, including nausea, vomiting, diarrhea, and stomach upset, and they are more likely at higher doses. Contact your provider if side effects are severe or you notice a rash or signs of an allergic reaction.

Can nystatin tablets treat oral thrush or vaginal yeast infections?

Nystatin tablets are FDA-approved for intestinal candidiasis; other formulations, such as oral suspension or topical products, are typically used for thrush or skin infections. Your provider will recommend the right dosage form for your specific condition.