Lactulose Crystals 100G

Lactulose is not absorbed in the intestine like other forms of sugar, meaning it can travel through the digestive tract to the large intestine. When lactulose gets to the large bowel, it provides a food source for bacteria there, but also draws water to the intestine and stimulates the bowels as a laxative. Lactulose is an artificial FODMAP.
Lactulose is a form of sugar used medically in the digestive tract as a treatment for constipation (a laxative). Lactulose selectively feeds healthy bacteria and is considered a prebiotic.

Using lactulose in the vagina.
Lactulose can be used in the vagina to selectively feed lactobacilli while actively starving pathogens.

Research has demonstrated that lactulose does not feed yeasts or bacterial vaginosis/vaginal dysbiosis-related microbes, making it an effective way to increase vaginal lactobacilli counts.Lactulose actively limits the growth of Candida albicans and Atopobium vaginae and does not affect (as in, does not limit or promote) the growth of Gardnerella vaginalis, Prevotella bivia, or Mobiluncus curtisii.

Lactulose can also lower vaginal pH, getting the vagina back to a healthy pH of between 3.5 and 4.5. This acidity change is likely due to the extra activity of lactic-acid-producing bacteria, lactobacilli.