@Lana Zambarakji I would first ask why. Why does this person have a bacterial and yeast overgrowth.
Antibiotics? Environment (i.e. heavy metals, mold exposure, contaminated food/water)? Poor eating hygiene? High stress? Compromised immunity (i.e. low vitamin A, D, zinc levels)? Diet high in sugar/refined carbs? Poor digestive function? Hormonal changes? Lack of beneficial bacteria and yeast / microbiome diversity?
If you can share a little more about this person’s health history and diet, we can guide you a bit better.
Killing bacteria and yeast is easy. Many great herbal options to do that. But if the source isn’t identified and addressed, there’s a chance of recurrence.
You can find “killing” solutions for bacteria HERE and for yeast HERE from the Gut Health Masterclass course.