The NHS website

About Pepto-Bismol

NHS medicines information on Pepto-Bismol – what it's used for and key facts.

NHS medicines information on loperamide – what it's used for and key facts.

NHS medicines information on codeine – what it's used for and key facts.

Find out about the side effects of antibiotics, including the symptoms of an allergic reaction.

Read about the main side effects of radiotherapy, including sore skin, tiredness and temporary hair loss, and how to manage them.

Find out what to do if you're sick or have diarrhoea when taking the progestogen-only pill (mini pill).

Find out what to do if you're sick or have diarrhoea after taking the combined pill.

Find out about the rotavirus vaccine, including why it's given, who should have it and what the possible side effects are.