The research speaks loud and clear.
"...findings suggest that regular or as-needed dosing with paracetamol does
not affect recovery time compared with placebo in low-back pain, and
question the universal endorsement of paracetamol..."
Full Abstract Here
Also known as Acetaminophen or Tylenol
And did you what the number one cause of liver failure in the United States of America? The answer was already provided and here is the evidence: Article
Try chiropractic. Here is just one study of many that support this choice.
Full Abstract Here