Clotan 200 mg Capsule is used to reduce pain associated with acute migraine attacks in adults. It is also used to reduce pain and swelling in muscles and joints. It contains Tolfenamic acid which works by blocking the chemical messengers that cause pain and inflammation. In some cases, this medicine may cause side effects such as indigestion, dizziness, headache, drowsiness, stomach pain, vomiting, nausea, and diarrhoea. Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.