Does current evidence support the use of resveratrol as an anti-ageing drug?
It's worth noting that earlier this month a large body of resveratrol research was retracted:


  The University of Connecticut, in what clearly seems like an attempt to get ahead of damaging news, has announced an “extensive”
  investigation into research misconduct involving one of its
  scientists, Dipak K. Das.
  
  According to a press release, the university has notified 11 journals
  that published Das’ work about the alleged fraud. One area of interest
  for Das, a government-funded professor of surgery and director of the
  Cardiovascular Research Center, has been resveratrol, a substance in
  red wine that has allegedly been linked to improved cardiac health.


Retraction Watch's coverage has been pretty thorough and includes comments and citations:


UConn resveratrol researcher Dipak Das fingered in sweeping
misconduct case 
So how peripheral was Dipak Das’ resveratrol
work, really?
Resveratrol fraud case update: Dipak Das loses
editor’s chair, lawyer issues statement refuting all charges