Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Campral is composed of Acamprosate , which affects chemicals in the brain that may be unbalanced in a person who is addicted to alcohol. It works by restoring the chemical balance in the brain in an alcohol-dependent person who has recently quit drinking. Campral, when used together with behavior modification and counseling support would effectively help a person not to drink, who has recently quit drinking alcohol. Common side effects that might occur while taking Acamprosate include: extreme feeling of sadness or emptiness, fear and severe depression. However, such symptoms can be taken care by counseling and behavior modifications. Hope I have answered your query. Let me know if I can assist you further.