Such term does not include drugs or classes of drugs, or their medical uses, which may be excluded from coverage or otherwise restricted under section
1396r–8
(d)(2) of this title, other than subparagraph (E) of such section (relating to smoking cessation agents), or under section
1396r–8
(d)(3) of this title, as such sections were in effect on December 8, 2003. Such term also does not include a drug when used for the treatment of sexual or erectile dysfunction, unless such drug were used to treat a condition, other than sexual or erectile dysfunction, for which the drug has been approved by the Food and Drug Administration.