Animal products

The BBC has an article titled Many drugs 'non-vegetarian and need better labelling.'

People who choose not to eat animal products may be unaware that common medicines could contain them, a study suggests.

Many tablets and liquid medicines use gelatin, derived from animal bones or skin.

A survey in the Postgraduate Medical Journal shows a quarter of patients are unknowingly prescribed drugs containing gelatin contrary to their beliefs.
Continue reading: http://www.bbc.co.uk/news/health-17182625