langchain/docs/extras/integrations/providers/pubmed.md

# PubMed

# PubMed

>[PubMed®](https://pubmed.ncbi.nlm.nih.gov/) by `The National Center for Biotechnology Information, National Library of Medicine` 
> comprises more than 35 million citations for biomedical literature from `MEDLINE`, life science journals, and online books. 
> Citations may include links to full text content from `PubMed Central` and publisher web sites.

## Setup
You need to install a python package.

```bash
pip install xmltodict
```

### Retriever

See a [usage example](/docs/integrations/retrievers/pubmed).

```python
from langchain.retrievers import PubMedRetriever
```

### Document Loader

See a [usage example](/docs/integrations/document_loaders/pubmed).

```python
from langchain.document_loaders import PubMedLoader
```
`PubMed` document loader (#8893) - added `PubMed Document Loader` artifacts; ut-s; examples - fixed `PubMed utility`; ut-s @hwchase17 1 year ago			`# PubMed`

			`# PubMed`

			>[PubMed®](https://pubmed.ncbi.nlm.nih.gov/) by `The National Center for Biotechnology Information, National Library of Medicine`
			> comprises more than 35 million citations for biomedical literature from `MEDLINE`, life science journals, and online books.
			> Citations may include links to full text content from `PubMed Central` and publisher web sites.

			`## Setup`
			`You need to install a python package.`

			```bash
			`pip install xmltodict`
			```

			`### Retriever`

			`See a [usage example](/docs/integrations/retrievers/pubmed).`

			```python
			`from langchain.retrievers import PubMedRetriever`
			```

			`### Document Loader`

			`See a [usage example](/docs/integrations/document_loaders/pubmed).`

			```python
			`from langchain.document_loaders import PubMedLoader`
			```