Good morning how to use Nystatin Teva ?

Answer: As directed by your doctor. I also do not know whether the question concerns tablets or granules for suspension.

Just in case, I put an excerpt from the leaflet:
Preparation in the form of tablets: :Treatment of fungal infections of the gastrointestinal tract. Adults: 500,000 IU–1 million IU every 6 hours (4 times daily). The maximum dose is 6 million IU per day in divided doses. Treatment can last up to 3 weeks. The use of the preparation should be continued for 48 hours after the disappearance of clinical symptoms. Prophylactically. Adults: 500,000 IU every 12 or 8 hours (2–3 times daily)."

Suspension: "Always use this medicine as directed. 1 ml of the reconstituted suspension contains 100,000 IU nystatin. The syringe provided in the pack shows 1 ml (100,000 IU).

Adults Treatment of oral mycosis: 100,000 IU 4 times daily. The suspension should be kept in the mouth for as long as possible before swallowing. Treatment of gastrointestinal mycosis: 500,000 IU to 1,000,000 IU every 6 hours. Prophylactically (during antibiotic therapy): 500,000 IU every 8 hours.

Use in infants, children and adolescents Treatment of oral mycosis: Oral thrush: 100,000 IU 4 times daily. The longer the suspension remains in the mouth in contact with the infected site before swallowing, the greater the effectiveness of the drug. Treatment of gastrointestinal mycoses: 200,000 IU to 2,000,000 IU per day in 4 divided doses.

Nystatin Teva can also be used externally to brush your mouth 2 to 3 times a day. Preparation of the suspension Add boiled, cool water to the mark on the bottle, then shake until suspended (28 ml). If necessary, after standing, fill up with water again to the mark – this should be done once. The shelf life of the prepared suspension is 7 days. Shake well before each use. Keep the medicine in the refrigerator."

To brush the throat or mouth, you can use, for example, a sterile gauze pad. After brushing, refrain from eating and drinking for about 30 minutes.