Which of the following plants are nci.known to have adverse health affects if misused and useful as medicines?

A) Thymus vulgaris (thyme) B) sage (Salvia officinalis) C) garlic (Allium safivum) D) spearmint (Mentha spicata) E) all the above

Which of the following plants are nci.known to have adverse health affects if misused and useful as medicines?
http://www.Salvia.md has a ton of info on the subject and the most potent extract I've ever tried!