Friday, July 10, 2026

Intelligence · INN directory

Rare Disease Drugs Directory

Orphan and rare disease therapies, enzyme replacements, and gene therapies for ultra-rare indications.

Drugs in segment 7
Companies 1,771
Pipeline programs 20,548

Quick answer

Rare disease drugs: NovaPharmaNews indexes 7 pharmaceutical drugs in this therapeutic segment with regulatory status, pipeline programs, patents, and congress coverage cross-links. Orphan and rare disease therapies, enzyme replacements, and gene therapies for ultra-rare indications.

7 drugs · Rare disease drugs · by data quality

  1. dextromethorphan hydrobromide

    NUEDEXTA Amneal Pharma Europe Ltd

    ORAL FDA: approved · EMA: withdrawn

    N07XX59
  2. dextromethorphan polistirex

    DEXTROMETHORPHAN POLISTIREX Amneal Pharma Europe Ltd

    ORAL FDA: approved

  3. butorphanol tartrate

    BUTORPHANOL TARTRATE

    INJECTION FDA: approved

  4. levallorphan tartrate

    LORFAN

    INJECTION FDA: approved

  5. levorphanol tartrate

    LEVO-DROMORAN

    INJECTION FDA: approved

  6. miglitol

    MIGLITOL

    ORAL FDA: approved

  7. pancreas powder

    ENZEPI

    EMA: withdrawn

    A09AA02

Frequently asked questions

How many rare disease drugs are in the directory?

7 drug profiles match this therapeutic area filter based on class, mechanism, target, and INN metadata.

How are drugs assigned to a therapeutic area?

Classification uses WHO therapeutic class, mechanism of action, molecular target, and INN pattern matching against curated oncology, metabolic, CNS, rare disease, and immunology taxonomies.

Where does regulatory data come from?

Profiles combine FDA Drugs@FDA, EMA EPAR references, ClinicalTrials.gov pipeline links, and editorial enrichment. See our data sources page for attribution and update cadence.