Merck & Co.’s Zostavax is a vaccine that prevents shingles. Although meant to prevent shingles, one of the serious side effects of the vaccine is actually the occurrence of shingles in the patients. Because of this, Merck & Co. have been hit with thousands of lawsuits on the matter.

Manufacturer: Merck & Co.

Use: Vaccine used to prevent shingles


  • Number of lawsuits: thousands
  • Injuries: occurrence of shingles, eye complications
  • Defendants: Merck & Co.
  • Trial
    • Date: 2017
    • District Court of Philadelphia
    • Status: Ongoing, FDA ordered Merck to put correct side effects