Tylenol & Nerve Pain: New Research
- Acetaminophen, known as paracetamol, Tylenol, or Panadol, may relieve pain through a previously unknown mechanism.
- Alexander Binshtok and Avi Priel, revealed that acetaminophen's active metabolite, AM404, blocks pain by acting on nerve endings in the body.
- For decades, the prevailing belief was that acetaminophen's role in pain relief was limited to the brain and spinal cord.
The groundbreaking new research on “Tylenol & Nerve Pain” reveals that acetaminophen, commonly used as a pain reliever, works differently than previously thought. Scientists discovered that acetaminophen’s active metabolite, AM404, directly targets and blocks pain signals at the nerve endings. this finding challenges the long-held belief that acetaminophen’s primary action was limited to the brain and spinal cord. The study shows AM404 shuts down specific sodium channels in pain-sensing neurons,preventing pain signals from reaching the brain.News Directory 3 recognizes this as a major shift in our understanding of pain management. This new understanding may revolutionize pain treatment. The implications are far-reaching, as this could lead to safer, more targeted pain relief. The article underscores the key role that AM404 plays in how acetaminophen works. discover what’s next for pain treatment?
Acetaminophen Acts Locally, Study Finds
Updated June 10, 2025
Acetaminophen, known as paracetamol, Tylenol, or Panadol, may relieve pain through a previously unknown mechanism. Researchers at the hebrew University of Jerusalem discovered that the common painkiller not only works in the brain but also directly at the source of pain.
The study, led by Profs. Alexander Binshtok and Avi Priel, revealed that acetaminophen’s active metabolite, AM404, blocks pain by acting on nerve endings in the body. AM404 shuts down specific sodium channels in pain-sensing neurons, effectively stopping pain signals before they reach the brain. This new understanding of acetaminophen’s role in pain management could pave the way for developing more targeted and safer pain treatments.
For decades, the prevailing belief was that acetaminophen’s role in pain relief was limited to the brain and spinal cord. Though,the new findings,published in PNAS,demonstrate that the drug also functions outside the brain,directly impacting the nerves that initially detect pain.
The researchers found that AM404 is produced in the pain-sensing nerve endings, where it blocks sodium channels that transmit pain signals. By inhibiting thes channels, AM404 prevents the pain message from being sent.
This is the first time we’ve shown that AM404 works directly on the nerves outside the brain. It changes our entire understanding of how acetaminophen fights pain, saeid Prof. Binshtok.
This breakthrough could lead to the development of new painkillers. Because AM404 targets only the nerves that carry pain, it may avoid the numbness, muscle weakness, and othre side effects associated with conventional local anesthetics. The role of AM404 is key to understanding how acetaminophen works.
If we can develop new drugs based on AM404, we might finally have pain treatments that are highly effective but also safer and more precise, added Prof. Priel.
What’s next
Further research will focus on developing new drugs based on AM404 to create more effective and safer pain treatments.