The drug company – which makes the lucrative drug, Viagra – said it was ending its neuroscience research to focus on areas where it was strongest.
Alzheimer’s and Parkinson’s sufferers have been dealt a blow, with drug maker Pfizer deciding to end its research into the debilitating diseases.
Many sufferers and their families had felt new hope when the pharmaceutical giant began early-stage research, but the company has now decided to invest elsewhere.
Al Jazeera’s John Hendren reports.
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