Here's the remedy for infant thrush, commonly known as oral candidiasis, using a grandmother's remedy:

Grandmother's remedy with baking soda solution for infant thrush:

Ingredients:

- 1/4 teaspoon of baking soda

- 1/2 cup of warm water

Instructions:

1. Begin by preparing a solution by dissolving the baking soda in warm water. Make sure the water is at a comfortable temperature for your infant.

2. Dip a clean gauze or cotton ball into the diluted baking soda solution.

3. Gently squeeze out any excess liquid from the gauze or cotton ball.

4. Gently dab the inside of your infant's mouth with the soaked gauze or cotton ball, making sure to reach the areas affected by thrush.

5. Repeat this process two to three times a day, after meals, for a week or until the symptoms of thrush improve.

Baking soda is a common kitchen ingredient that has antifungal and alkaline properties. It can help restore the pH balance in your infant's mouth, creating an environment less favorable for the overgrowth of Candida, which causes thrush.

In addition to this grandmother's remedy, it's important to maintain good oral hygiene for your infant. Gently clean your baby's tongue, gums, and cheeks with a clean gauze or soft cloth after each meal. Avoid sharing pacifiers, bottle nipples, and toys that come into contact with your baby's mouth to prevent the spread of the infection.

Please note that if the symptoms of thrush persist or worsen despite using home remedies, it is recommended to consult a healthcare professional, such as a pediatrician, for an accurate diagnosis and appropriate treatment advice for your infant.