If you’re looking for a homeopathic remedy for a respiratory issue like the cold or cough, etc. this one is good:
-dash of gefilte fish broth [or pickle juice as substitute]
Can leave lemon in tea mixture. It is more medicinal than flavorful-but still relatively palatable.
Thyme is known to reduce coughs in studies (has thymol which is in listerine) but also proven to get rid of poison or bacteria-de-contimanating food! Great one to have in food emergency supply-as it’s also fever-reducing and good for the mood-