Table 2. Top semantic types of UMLS concepts for supplements.
| Semantic type | Percentage |
|---|---|
| Plant | 34% |
| Pharmacologic Substance | 27% |
| Organic Chemical | 18% |
| Food | 5% |
| Biologically Active Substance | 4% |
| Element, Ion, or Isotope | 2% |
| Vitamin | 2% |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.