Terms and Synonyms Searched:
| Terms | Search Results* | Entire Database** |
|---|---|---|
| Synonyms | ||
| opioid use | 104 studies | 1,894 studies |
| narcotics use | 2 studies | 252 studies |
| Drug | 104 studies | 241,321 studies |
| Agent | 63 studies | 134,605 studies |
| medications | 50 studies | 37,034 studies |
| Medicine | 26 studies | 62,031 studies |
| Pharmaceutical | 19 studies | 24,768 studies |
| medicinal products | -- | 2,507 studies |
| Pharmaceutic Preparations | -- | 1 studies |
| Pharmacologic Substance | -- | 1 studies |
| Pharmacological Substance | -- | 6 studies |
| opioid | 104 studies | 9,077 studies |
| -- | No studies found |
| * | Number of studies in the search results containing the term or synonym |
| ** | Number of studies in the entire database containing the term or synonym |