Side effects and cautions

Direct vasodilators are strong medications that generally are used only when other medications haven't controlled your blood pressure adequately.

These medications have a number of side effects, some of which require taking other medications to counter.

Side effects include:

  • Rapid heartbeat (tachycardia)
  • Heart palpitations
  • Fluid retention (edema)
  • Nausea
  • Vomiting
  • Flushing
  • Headache
  • Excessive hair growth
  • Joint pain
  • Chest pain
June 10, 2016 See more In-depth