Paracetamol is also known as acetaminophen and is widely used as over the counter analgesic and anti-pyretic. It is a mild analgesic which causes relief in mild headaches and other aches and pains. In combination with other drugs like analgesic, paracetamol is used in the management of post surgical pain and severe pain.
Mefenamic acid is anon steroidal anti-inflammatory drug which is used for the treatment of pain, it also includes menstrual pain. It produces its action by inhibition of prostaglandin synthesis.