Learned Intermediary Doctrine Dooms Claims in Singulair Injury Action, Calif. Judge Rules

SAN DIEGO — A California federal judge has awarded Merck & Company Inc. summary judgment in a lawsuit accusing it of failing to apprise doctors of a link between Singulair (montelukast) and neuropsychiatric injuries, ruling that the plaintiff failed to present evidence that the warnings provided to his physician were inadequate.

On Aug. 27, Judge Marylin Huff of the U.S. District Court for the Southern District of California found the plaintiff’s experts did not identify any specific inadequacies in the Singulair or montelukast label in their reports.

Spencer Bueno sued Merck & Co., Inc., Merck Sharp & Dohme LLC, Organon …