Fluids first: small, frequent sips, with oral rehydration solution if it is heavy - dehydration is the real danger, not the toilet trips.
Eat plain foods (rice, toast, bananas, soup) when you feel like it; most cases clear in a few days without medicine. Loperamide can slow a busy day, but skip it with blood or mucus in stool, high fever, or severe pain - those need a doctor. Red flags: dehydration signs (dark urine, dizziness, dry mouth), blood, high fever, symptoms past a few days (24 hours in a baby), recent antibiotics, or foreign travel. Stay home until 48 hours after the last episode. Pymander is a free AI doctor, 24/7 by text, and can help you judge severity.
What to do
Common questions
How do you stop diarrhea fast?
The fastest safe plan: fluids first. Diarrhea's real danger is dehydration, not the trips to the toilet - drink small, frequent sips of water, and if it is heavy or you are also vomiting, use an oral rehydration solution (pharmacy sachets, or a homemade mix of water with a little sugar and salt), because it replaces the salts plain water misses. Eat when you feel like it: plain, easy foods - rice, toast, bananas, soup - and do not force food early. Most infectious diarrhea clears on its own in a few days without any medicine. Loperamide (pharmacy anti-diarrheal) can slow things for a busy day, but skip it if there is blood or mucus in the stool, a high fever, or severe stomach pain - those patterns need a doctor, and slowing the gut can be harmful with bacterial infection. Skip anti-diarrheals for children unless a clinician says so. Red flags: signs of dehydration (very dark urine, dizziness, dry mouth), blood in stool, high fever, severe pain, symptoms lasting beyond a few days in adults (or 24 hours in a baby), or recent antibiotics or foreign travel. Stay home from work or school until 48 hours after the last episode - that is the NHS rule, and it protects everyone else. Pymander is a free AI doctor, 24/7 by text, that can help you judge severity.