Benalgis Tablet is a dietary supplement of thiamine (vitamin B1). It is used in the treatment of nutritional deficiencies caused by low levels of thiamine in the body. It protects the body from conditions caused due to low levels of thiamine such as heart and nerve disorders. This medicine is to be taken in the dose and duration as advised by your doctor. It is to be swallowed as a whole and not to be crushed or chewed. This medicine is to be taken with or without food but it should be taken at a fixed time. The common side effects seen with this medicine include skin rash and stomach discomfort. Before taking this medicine, let your doctor know if you have any preexisting medical conditions. Let your doctor also know about all the medicines you are taking. Try to avoid or limit the consumption of alcohol while on treatment with this medicine.