Ambroxol increased enzyme levels in Parkinson’s dementia patients, but showed no cognitive benefit in a year-long trial.

The drug is Ambroxol. It’s been used for decades to treat respiratory ailments by thinning mucus and easing coughs. But now, ...

A decades-old cough medicine, Ambroxol, could be on the verge of a dramatic second act—not for sore throats, but for ...