Answer
Diarrhoea is very common. Speak to a clinician or pharmacist if it is severe, persistent, dehydrating or troublesome.
Sources for this answer
- Acamprosate 333 mg Gastro-resistant Tablets. — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.