The d means your vitamin e is from natural sources.
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Medicine
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2014.3012.0251
label: nonaccession number
content: 2014.3012
label: catalog number
content: 2014.3012.0251
objectType: label: Object Name
content: display, advertising device
physicalDescription: label: Measurements
content: overall.125: 1/8 in x 10 3/8 in x 13 in; .3175 cm x 26.3525 cm x 33.02 cm