An analgesic is commonly referred to as painkillers. these are used to relive pain. Details of Different pain killers are given below.Analgesic is a greek word. painkillers are acts on peripheral and central nervous system. some commonly used painkillers are paracetamol, salicylates, tradadol, morphine etc. paracetamol inhibit the production of prostaglandin production, there by reducing the pain. paracetamol may cause some side effects, it can cause serious damage to kidney and liver. the continuous use of morphine and other opioid narcotics may results in addiction. opioid are very good painkillers. some patients it cause nausea and vomiting.Pain killers usage must be of specified dose

The regular use of analgesics may cause deafness. specifically in younger peoples.Pain killer Side effects are dangerous.The medical studies reveals that the aspirin can reduce the pain due to cancer. it will reduce the death risks due to cancer in women. aspirin can prevent the metastases of cancer cells. the over dosage of aspirin results in stomach bleeding.