Science and Discovery

Parkinson's Disease

1 article

A dimly lit laboratory with a microscope, symbolizing the disappointment of a failed Parkinson's drug trial.

Merck Halts Parkinson's Drug Program After Phase 3 Setback

Merck's Parkinson's drug, preladenant, was discontinued in 2026 after Phase 3 trials showed it was no more effective than a placebo.

Aram Sarkisian·May 22, 2026