Hello there, Welcome to HealthcareMagic.The tab.Nicip or Nimuselide taken as analgesic, has few of side effects seen commonly in other drugs as well like vomiting, loose stools, skin hypersensitivity/ rash, itching, headache etc. Apart from that the alarming side effect, seen with this drug, for which it is (mostly) banned is because of its harm it causes on the liver. But that depends how long and how frequent , you have been on it. So if doubtfull, you can get a liver function test done and show it to a physician. Also try diagnosing and treating the cause rather than only taking pain killers.Take care.