text: user1819: I have ...
  
  A database with patient phenotypes in, stored as HPO terms
  Genetic data in whatever format I need
  
  I want ...
  
  To store drug names in a way that won't make my life difficult
  If it's feasible, to make them so that you could draw links between HPO terms, medications, genetic changes, and outcomes.  Note that I'm not actively trying to do that, but I don't want to exclude the possibility of it in the future
  
  Ideally, I'd like those drug names in some kind of ontology, and even more ideally an ontology that's available on http://bioportal.bioontology.org
  So - what's the best drug ontology to use in this case?
  Update
  
  What relationships would this drug ontology describe? Structural similarity of the compounds? Affected pathways? How would they be linked? Do you want all drugs that can cause the same side effect linked, for instance? Or all drugs that can be used for the same disease? 
    Drugs by disease would be the most useful.  The information that would be most useful would be something like
  
  
  Atenolol
  
  
  Atenolol 25mg
  Atenolol 50mg
  Atenolol 100mg
  
  Propanolol
  
  
  Propanolol 10mg
  Propanolol 40mg
  Propanolol 80mg
  ...
  
  
  In short, being able to get a list of dosages for a given drug.  It'd be extra-useful if I could also retrieve a set of drugs for a given condition, so in the above example to retrieve a list of beta blockers (Atenolol, Metoprolol, Nebivolol, ...)
  
  Have you looked at any of the various drug ontologies listed in bioportal.bioontology.org? Which ones have you discarded so we don't suggest the same ones? What were they missing that you need?
  
  
  MDDB doesn't seem to be structured as above
  Likewise The Drug Ontology
  RxNorm seems to be the best available that I've seen
  
  
  user4628: Since this question's been asked there's been a (what looks like a first useful?) release of Drug Ontology DRON. Perhaps worth checking again?
  
original_text: 1819: <p>I have ...</p>
  
  <ul>
  <li>A database with patient phenotypes in, stored as HPO terms</li>
  <li>Genetic data in whatever format I need</li>
  </ul>
  
  <p>I want ...</p>
  
  <ul>
  <li>To store drug names in a way that won't make my life difficult</li>
  <li>If it's feasible, to make them so that you <em>could</em> draw links between HPO terms, medications, genetic changes, and outcomes.  <em>Note that I'm not actively trying to do that, but I don't want to exclude the possibility of it in the future</em></li>
  </ul>
  
  <p>Ideally, I'd like those drug names in some kind of ontology, and even more ideally an ontology that's available on <a href="http://bioportal.bioontology.org" rel="noreferrer">http://bioportal.bioontology.org</a></p>
  
  <p>So - what's the best drug ontology to use in this case?</p>
  
  <p><strong>Update</strong></p>
  
  <blockquote>
    <p>What relationships would this drug ontology describe? Structural similarity of the compounds? Affected pathways? How would they be linked? Do you want all drugs that can cause the same side effect linked, for instance? Or all drugs that can be used for the same disease? 
    Drugs by disease would be the most useful.  The information that would be most useful would be something like</p>
  </blockquote>
  
  <ul>
  <li>Atenolol
  
  <ul>
  <li>Atenolol 25mg</li>
  <li>Atenolol 50mg</li>
  <li>Atenolol 100mg</li>
  </ul></li>
  <li>Propanolol
  
  <ul>
  <li>Propanolol 10mg</li>
  <li>Propanolol 40mg</li>
  <li>Propanolol 80mg</li>
  <li>...</li>
  </ul></li>
  </ul>
  
  <p>In short, being able to get a list of dosages for a given drug.  It'd be extra-useful if I could also retrieve a set of drugs for a given condition, so in the above example to retrieve a list of beta blockers (Atenolol, Metoprolol, Nebivolol, ...)</p>
  
  <blockquote>
    <p>Have you looked at any of the various drug ontologies listed in bioportal.bioontology.org? Which ones have you discarded so we don't suggest the same ones? What were they missing that you need?</p>
  </blockquote>
  
  <ul>
  <li>MDDB doesn't seem to be structured as above</li>
  <li>Likewise The Drug Ontology</li>
  <li>RxNorm seems to be the best available that I've seen</li>
  </ul>
   4628: <p>Since this question's been asked there's been a (what looks like a first useful?) release of Drug Ontology <a href="http://bioportal.bioontology.org/ontologies/DRON" rel="nofollow noreferrer">DRON</a>. Perhaps worth checking again?</p>
  