Assertion: patent medicine's ingredient | /r/HasProperty | secret
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: In ancient times, such medicine was called nostrum remedium, "our remedy" in Latin, hence the name "nostrum," that is also used for such medicines; it is a medicine whose efficacy is questionable and whose ingredients are usually kept secret.
text: The actual ingredients within the bottles, however, were kept secret — a practice that only added to the medicine's mystique.
text: In ancient times, such medicine was called nostrum remedium, "our remedy" in Latin, hence the name "nostrum," that is also used for such medicines; it is a medicine whose efficacy is questionable and whose ingredients are usually kept secret.