Tina Tos 500mg Tablet is used to treat certain infections caused by microbes, especially bacteria/Protozoa, such as infection of the intestines or vagina. It is also used to treat certain sexually transmitted infections. It contains Tinidazole, which kills infection-causing germs, mainly protozoans and bacteria. In some cases, you may experience common side effects such as nausea, vomiting, loss of appetite, dizziness, tremors and headaches. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions.