Respiratory and Lung Herbs
The traditional cough, chest and lung herbs of European practice, plus their Asian counterparts. Two of them contain pyrrolizidine alkaloids and are no longer considered safe taken internally; those pages lead with that rather than bury it.
A herb is filed here by what it is traditionally used for, not by a claim that it works. Each herb page states its own evidence tier, its documented harms and its drug interactions — read those before the category name.