Dear: "Help! My dog has diarrhea, what should I do?":
So you left out all that banana bread you've been baking to keep busy during the Quarantine, and Fluffy ate it. And now he's got the runs, and it's all over your carpets! What to do!
There's lots of different advice on all the pet sites, but I'll share what has worked best for me, when I have overdone it on the generous leftovers.
White Rice. That's it. For breakfast and dinner for 1-3 days, maybe a splash of chicken broth on top to make it less bland. It works like magic, and better than anything else.
Now, if it's been over 3 days of rice and the condition persists, or Fluffy's very old or has medical conditions - then do call the Vet. If the Vet has you come in, they'll prescribe anti-diarrhea meds and put him on a drip if he's severely dehydrated.
But if not, then you've got this. Don't forget to roll up the carpets and keep the fresh water going.
All the best,
Trouble
DISCLAIMER: I am not a real medical professional, I am just a dog with a free advice column.