About Us
Our Business
What we do for patients
Regencell Asia aims to save and improve lives of patients in the fight against COVID-19 and its long-term side effects. We aim to commercialize a non-synthetic and all-natural ingredient TCM formulae with no adverse side effects.


What we do for parents, caregivers and medical professionals
We hope to empower you in the fight against COVID-19. Regencell Asia believes our formulae address the fundamental cause of the disease to achieve an optimal outcome.
If you know someone who is showing COVID-19 symptoms or have been diagnosed with COVID-19, please approach us at [email protected] to understand more about our assistance which could be offered to you, your friends or relatives.
What we do for parents, caregivers and medical professionals
We hope to empower you in the fight against COVID-19. Regencell Asia believes our formulae address the fundamental cause of the disease to achieve an optimal outcome.
If you know someone who is showing COVID-19 symptoms or have been diagnosed with COVID-19, please approach us at [email protected] to understand more about our assistance which could be offered to you, your friends or relatives.

Our History
Over several years, Regencell’s Chief Executive Officer, Yat-Gai Au witnessed significant improvement of a family friend’s son who had been diagnosed with attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD), he was treated by an extraordinary TCM Practitioner. The patient made noticeable improvements after just one month of treatment. Within two years of treatment, his disorder and related symptoms had generally disappeared and the child was able to live a normal life.
Then in 2015, Regencell’s Chief Strategy Officer, James Chung, was admitted as a patient to the same Chinese medicine practitioner for a different illness and witnessed the amazing healing capability of the treatment first hand. Both were inspired by their experiences and wondered why such a small number of patients were benefiting from the treatment. They strongly believed that the formula should be more readily available in order to help more people. Yat-Gai established Regencell and James quit his corporate career to join him. Together, they have made it their mission to research and develop the formula in hopes of bringing this game-changing formula to more patients around the world.
Dr. YC Chao’s journey in Traditional Chinese Medicine (TCM) started when his then 7-year-old son was diagnosed with ASD and subsequently received the TCM Practitioner’s treatment. It transformed his son from a disengaged, moody boy to a confident young man who recently completed his master’s degree in June 2020. Intrigued by the successful treatment using Chinese medicine, Dr. Chao started learning and eventually obtained a master’s degree in TCM in Silicon Valley. After passing California’s board-certified Chinese doctor exam in 2017, Dr. Chao has formally immersed himself in the research and development of the formula and has joined Regencell as Chief Medical Officer in 2019.
Our strategic partner TCM Practitioner Mr. Sik-Kee Au has developed the TCM formulae based on his TCM brain theory for over 30 years to treat ADHD, ASD and many other neurological illnesses, disorders and degeneration and has obtained satisfactory clinical treatment results.
When COVID-19 broke out in late 2019 and early 2020, TCM Practitioner Sik-Kee Au started to develop a new treatment formula which targets patients affected with COVID-19. This treatment is now used for patients that are suspected or already confirmed to have COVID-19. Mr. Sik-Kee Au started to treat various cold and flu patients since the beginning of his clinical practices, including several 2003 SARS patients in Hong Kong.
In late 2019 and early 2020, little was known about COVID-19, hence test kits were difficult to obtain and vaccines were not yet available. However, as he personally came across a few patients that experienced COVID-19 like symptoms, he offered to give the treatment to them to see if it helps.
TCM Practitioner Au’s TCM COVID-19 medicine uses natural ingredients to treat different elements within the body and stimulates the body’s own healing mechanism. As a result, there is an overall improvement in the overall health and symptoms experienced by COVID-19 patients.
As of September 2021, 12 patients (suspected or confirmed COVID-19 cases) have been treated in the United States, and their health records showed significant improvements after an average treatment period of 5 days.
Over several years, Regencell’s Chief Executive Officer, Yat-Gai Au witnessed significant improvement of a family friend’s son who had been diagnosed with attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD), he was treated by an extraordinary TCM Practitioner. The patient made noticeable improvements after just one month of treatment. Within two years of treatment, his disorder and related symptoms had generally disappeared and the child was able to live a normal life.
Then in 2015, Regencell’s Chief Strategy Officer, James Chung, was admitted as a patient to the same Chinese medicine practitioner for a different illness and witnessed the amazing healing capability of the treatment first hand. Both were inspired by their experiences and wondered why such a small number of patients were benefiting from the treatment. They strongly believed that the formula should be more readily available in order to help more people. Yat-Gai established Regencell and James quit his corporate career to join him. Together, they have made it their mission to research and develop the formula in hopes of bringing this game-changing formula to more patients around the world.
Dr. YC Chao’s journey in Traditional Chinese Medicine (TCM) started when his then 7-year-old son was diagnosed with ASD and subsequently received the TCM Practitioner’s treatment. It transformed his son from a disengaged, moody boy to a confident young man who recently completed his master’s degree in June 2020. Intrigued by the successful treatment using Chinese medicine, Dr. Chao started learning and eventually obtained a master’s degree in TCM in Silicon Valley. After passing California’s board-certified Chinese doctor exam in 2017, Dr. Chao has formally immersed himself in the research and development of the formula and has joined Regencell as Chief Medical Officer in 2019.
Our strategic partner TCM Practitioner Mr. Sik-Kee Au has developed the TCM formulae based on his TCM brain theory for over 30 years to treat ADHD, ASD and many other neurological illnesses, disorders and degeneration and has obtained satisfactory clinical treatment results.
When COVID-19 broke out in late 2019 and early 2020, TCM Practitioner Sik-Kee Au started to develop a new treatment formula which targets patients affected with COVID-19. This treatment is now used for patients that are suspected or already confirmed to have COVID-19. Mr. Sik-Kee Au started to treat various cold and flu patients since the beginning of his clinical practices, including several 2003 SARS patients in Hong Kong.
In late 2019 and early 2020, little was known about COVID-19, hence test kits were difficult to obtain and vaccines were not yet available. However, as he personally came across a few patients that experienced COVID-19 like symptoms, he offered to give the treatment to them to see if it helps.
TCM Practitioner Au’s TCM COVID-19 medicine uses natural ingredients to treat different elements within the body and stimulates the body’s own healing mechanism. As a result, there is an overall improvement in the overall health and symptoms experienced by COVID-19 patients.
As of September 2021, 12 patients (suspected or confirmed COVID-19 cases) have been treated in the United States, and their health records showed significant improvements after an average treatment period of 5 days.
Our Foundation
Established in 2017, the Regencell Foundation is a nonprofit organization dedicated to providing assistance to children with ADHD and ASD, and elderly people with dementia, particularly those who are facing financial difficulties.
ADHD and ASD is a neurodevelopmental disorder characterized by impaired social interaction, challenges in verbal and non-verbal communication, and restricted and repetitive behavior. There are more than 383 million people diagnosed with ADHD and ASD globally. Our aim is to improve the lives of children during their critical stages of development and to help them become independent to lead a normal life.
Alzheimer’s disease, the most common form of dementia, is a growing public health crisis. According to Alzheimer’s Disease International, 46.8 million people worldwide were living with dementia in 2015 and that number is expected to double every 20 years. Our mission is to reduce the burden on caregivers and their families and allow the elderly to live life with dignity.
We have supported and sponsored many charitable organizations in the past and will continue to do so in the future. For example, we have partnered with Community CareAge Foundation (CCAF) to provide dementia assessment and diagnosis, as well as financial aid.
More recently during the COVID outbreak in 2020, we have been donating masks, grocery vouchers, and hand sanitizers to The Neighborhood Advice Action Council (NAAC), a non-profit organization which lends a hand in the densely populated and deprived districts to provide consultation and counselling services to residents of all sectors.