Nystatin oral suspension 30ml (nystatin oral) is an antifungal medication used to treat yeast infections of the mouth (thrush). Nystatin is available in generic form.
What Are Side Effects of Nystatin?
Common side effects of Nystatin include

mouth irritation,
diarrhoea,
nausea,
vomiting,
stomach upset,
rash,
hives,
skin irritation,
allergic reaction,
slow heart rate,
bronchospasm,
facial swelling, and
muscle pain.

Dosage for Nystatin
The dose of Nystatin for children and adults is 4-6 mL four times daily (one-half of dose in each side of mouth). The preparation should be retained in the mouth as long as possible before swallowing. Infant dose is 2 mL four times daily (in infants and young children, use dropper to place one-half of dose in each side of mouth and avoid feeding for 5 to 10 minutes).
What Drugs, Substances, or Supplements Interact with Nystatin?
Nystatin is not absorbed by the body, so drug interactions are not expected. Tell your doctor all prescription or over-the-counter medicines and supplements you use.
Nystatin During Pregnancy and Breastfeeding
Nystatin should be used only when prescribed during pregnancy. It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.