Thousands of patients using blockbuster weight-loss injections may be suffering side effects that have previously flown under the radar in official research, a new study suggests.

A UK health watchdog is investigating warnings that drugs used to treat Parkinson's disease can cause side effects such as gambling and sex addictions.

Blood pressure medications taken by millions of people may increase the risk of a dangerous drop in blood sodium, new research suggests.

Vital safety checks were not carried out on COVID-19 vaccines before they were rolled out to millions, Germany’s pandemic inquiry has heard.

There is an increased risk of death for dementia patients taking antidepressants or anti-anxiety medications, a new study from Queen’s University Belfast has suggested.

People who use drugs with anticholinergic effects, including certain antidepressants, drugs for urinary incontinence and common antihistamines, are at higher risk of developing cardiovascular disease, according to a new study.

New research has found that for healthy older adults who took a low-dose of aspirin daily, there was no effect on overall cancer incidence but an increased risk of cancer-related mortality.

More research is needed into whether there may be a link between weight-loss injections and an increase in gallbladder removals, specialist doctors have said.