Who is Walter Pierpaoli?

Dr.Pierpaoli is the author of the New York Times bestseller “The Melatonin Miracle” (Simon & Schuster, New York) published in 17 Languages and has spent over 35 years researching melatonin.


manifesto IWGN 1984

The pioneers of the PNEI.

the great story behind a photo.



Created for you

Discover the products born from my studies.



My blog
Go to blog
fallen leaf on a road

Seasonal Affective Disorders (SAD)

Articles, Melatonin, Pineal Gland, Studies
Read more
eye of a man

Melatonin and eyes! The magic of light.

My experience

Articles, Melatonin, Studies
Read more
Anziani insieme in bicicletta

Melatonin Zinc-Selenium and elderly people

Taking one or two 1-mg tablets at bedtime (10-12 PM) in the evening breaks the vicious circle of metabolic aging and resets nerve and hormone centres by resynchronizing hormonal rhythms.


Disclaimer: The information presented herein strictly reflects the opinion of Prof. Walter Pierpaoli and is intended to provide information and for educational purposes. The information herein intends to support, and not replace, the existing relationship between a patient/visitor of this website and his/her referring physician and, in no case, can it be considered a diagnosis or used as an alternative to a medical examination. Prof. Pierpaoli undertakes no responsibility for any health consequences of any person who reads and follows the information contained on this site. All readers of the contents on this website, especially those who take prescription or over-the-counter drugs, should consult their physicians before beginning any nutritional or supplemental program or prior to making lifestyle changes. The contents herein are in compliance with the guidelines relevant to the application of arts. 55, 56 and 57 of the new Code of Medical Ethics and are intended for the general public.