Diarrhoea can be quite debilitating and triggered by (parasitic)/infection, inflammation, reaction to medications, food intolerance or anxiety/worry.

Although herbal support will depend on the cause, the use of gentle astringents such as Agrimony, Lady’s Mantle and Meadowsweet may reduce the frequency and ferocity whilst allowing the body’s natural response mechanism to flush out.

Antimicrobials and antispasmodics are long valued for supporting the body's natural immune response, as well as reducing stomach spasms. Herbs such as Goldenseal and Thyme may be very helpful here.

Demulcent herbs such as Plantain, Mullein and Marshmallow are well regarded for supporting digestive comfort and calm.

This is not medical advice but for informational purposes only.
Consult your doctor for contraindications with other medications and allergies, where pregnant, nursing or have underlying health conditions. Please do your own due diligence.