Hello and welcome, Thanks for your query. Zerodol is aceclofenac , which is a non-steroidal anti-inflammatory drug (NSAID), and is mainly used to treat pain and inflammation. Yes, if you do compare it to paracetamol, which is the mildest pain killer available and the one with the least side-effects, you can say aceclofenac (zerodol) will prove to give more relief. But, also, please note, stronger the pain killer, worse is its long term effect. Let me list a few of the immediate side-effects of aceclofenac: -Diarrhea -Dizziness -Gastric irritation leading to increased gas, ulcers and bleeding -Indigestion -Nausea -Vomiting -It can even alter the laboratory reports and show an abnormality in an otherwise healthy person A few other less common side-effects are: -Skin abnormalities including rashes, itching, urticaria, etc -Oral problems -Flatulence -Constipation And many more less reported ones, but still experienced by a few patients using this particular medication. As a doctor, I would be worried about your health on a long-term perspective, and not just immediate pain relief. Please avoid this medication as much as possible, and use it only when the pain is unbearable. You can continue the use of paracetamol though, which is more mild, although not side-effect free, but still mild. I hope I have succeeded in answering your questions, you could write back to us anytime for further clarifications. Best wishes.