I haven't been given warnings about it, but haven't asked about it either.
Here is something I found interesting regarding alcohol being a blood thinner:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.winespectator.com/Wine/Features/0,1197,2990,00.html">LINK</a>
Part of the article:
<i>Moderate drinkers are known to have lower rates of heart disease, but the reasons behind this are not completely understood, the authors of the study wrote. It is also known that moderate drinking prolongs bleeding time, <b>above and beyond the use of aspirin, a known blood thinner,</b> said Mukamal, a noted researcher in the field of alcohol and heart health. </i>
I suppose bad if you are prone to hemoptysis...