# H1 antagonist

> drugs that block the action of histamine at the H1 receptor helping to relieve allergic reactions

**Wikidata**: [Q1328275](https://www.wikidata.org/wiki/Q1328275)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/H1_antagonist)  
**Source**: https://4ort.xyz/entity/h1-antagonist


## References

1. Medical Subject Headings
2. Freebase Data Dumps. 2013
3. UMLS 2023
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)