Millions of people are addicted to, or at risk of becoming dependent on, prescription opioid painkillers, according to international research.

Some common nighttime cold and flu drugs could raise the risk of seizures in young children, research has found.

The parents of a young woman who died after being given an AstraZeneca Covid jab have accused the UK’s National Health Service (NHS) of failing to pass on known safety warnings about the vaccine.

COVID-19 vaccination seems to have some side effects on the lower urinary tract and overactive bladder in younger adults, according to a study published online in the Frontiers in Medicine journal.

The European Medicines Agency (EMA) has rejected a licence for an Alzheimer’s drug. The EMA said the benefits of lecanemab did not counterbalance the risk of serious side effects, especially bleeding and swelling in the brain.

COVID-19 vaccines had an over 1,000-fold increased risk of blood clots in the brain compared to the flu vaccine and more than a 200-fold increased risk compared to all other vaccines, according to a study by Dr. Peter McCullough and colleagues.

There's still much to learn about how doxorubicin, a 50-year-old chemotherapy drug, causes its most concerning side effects.

A recent study has raised the alarm over common non-steroidal anti-inflammatory drugs such as naproxen and ibuprofen, warning that people with conditions such as heart failure and peptic ulcers could suffer "avoidable harm".