Are there any side effects?

The drugs used to reduce stomach acid seem to be very well tolerated by the
majority of patients.

Nevertheless, some patients may get side effects, the most frequent being headache and diarrhoea. Sucralfate and bismuth may cause constipation and stools often turn black when taking bismuth. There seem to be no serious problems related to the long-term use of acid-suppressing drugs. Some have been used continuously for several years in many millions of patients with no major ill effects.

For more specific information, you should refer to the Patient Information Leaflet contained in your medicine pack.

If you have any concerns, consult your doctor.