Assertion: glucosamine's chondroitin | /r/HasProperty | combined with other ingredients
Facets:
value: almost always
type: TEMPORAL
value: in commercial products
type: LOCATION
Source sentences:
text: structure.4 Chondroitin is almost always combined with other ingredients in commercial products; however, most research on chondroitin has focused on single-ingredient chondroitin sulfate preparations.