In a mild situation, you can obtain a capsule containing friendly bacteria from a health food store. The enteric-coated capsules release the bacteria only after they have passed through the stomach. The stomach contains a strong acid which can kill microorganisms. Health food supplements can be expensive. In a more severe case, you may need to rid the colon of undesirable microorganisms.
Antibiotics can have side effects and cause an overgrowth of yeast.
Read the label carefully because it comes in plain and flavored and the flavoring might be something to which you are sensitive. Follow this with a daily dose of the friendly bacteria. I would welcome your personal contribution to this collection of information. Bonsai images by Horace Vallas .