This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Common side effects of pantoprazole
Most people who take pantoprazole do not have any side effects.
There are no common side effects with this medicine. Uncommon side effects that happen in less than 1 in 100 people include headaches, diarrhoea, feeling or being sick, constipation, a dry mouth or feeling tired.
If you do get a side effect, it's usually mild and will go away when you stop taking pantoprazole.
Talk to a doctor or pharmacist if a side effect bothers you or does not go away.
View the original NHS website page ↗. Refreshed 19 August 2026.
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