Scientists hail "good news for patients" as analysis finds 21 drugs reduce symptoms of depression.
Figures show one in 12 posts in England is unfilled - enough to staff 10 large hospitals.
Specific batches of Ventolin Accuhaler and Seretide Accuhaler do not deliver the full dose.
The PM wants concerns over a pregnancy test, vaginal mesh implants and an epilepsy drug to be looked at.
Polyphenols found in red wine helped fend off harmful bacteria in the mouth, a study finds.