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The OAD Clinic
Dr Oscar D’Agnone
Medical Director & Founder of Seagrave Healthcare
Dr Oscar D’Agnone is a highly respected Consultant Psychiatrist and a leading specialist in addiction medicine with over 35 years of clinical experience. As the CEO and Medical Director of The OAD Clinic, he leads a multidisciplinary team dedicated to treating substance misuse alongside complex mental health conditions such as anxiety, depression, PTSD and ADHD.
Beyond his clinical practice, Dr D’Agnone is a prominent figure in global health policy and medical education. A widely published author and frequent speaker at international scientific conferences, he continues to shape the future of addiction treatment through his research and his work as a senior adviser to governments and the pharmaceutical industry.
Posts by Oscar D'Agnone
Addiction Stigma and Its Impact on Treatment: How The OAD Clinic Approaches Person-Centred Care
By Luciana D'Agnone BA, MSc | Director & Editorial Lead - Last reviewed: 10 July 2026 Stigma remains one of the most persistent and most damaging barriers to addiction treatment.¹ Despite decades of evidence supporting that substance use disorders are medical conditions with biological, psychological, and social roots, the perception of addiction as a moral failing continues to delay help-seeking, reduce engagement with treatment, and contribute to poorer outcomes for people
Jul 139 min read
Managing Polysubstance Use in Clinical Practice: What New Research Tells Us
By Luciana D'Agnone BA, MSc | Director & Editorial Lead - Last reviewed: 10 July 2026 Polysubstance use is one of the most complex challenges facing addiction treatment clinics today. As drug markets evolve faster than traditional monitoring systems can track, frontline clinicians need practical strategies for adapting patient care in real time, sometimes without reliable information about what a patient has actually consumed.¹ In a new paper published in Drug and Alcohol Rev
Jul 137 min read
What Is Methadone? Understanding How It Works, Side Effects and Treatment Options
This article explains what methadone is, how it works to treat opioid dependence, its benefits and risks, potential side effects, detection times, and the modern treatment options available to support safe, long-term recovery. Page Reviewed on 29 June 2026 by Soraia Leite BA, MSc | Clinical Operations Leader & Editorial Expert Methadone is a long-acting synthetic opioid medication used in the treatment of opioid dependence and, in some circumstances, chronic pain. It has been
Jun 298 min read
What is Buvidal? Injection Guide
This article explains what Buvidal is, how its long-acting buprenorphine injection works to treat opioid dependence, its benefits over daily opioid substitution therapies, how long it remains in the body, and the importance of personalised medical supervision for successful long-term recovery. Page Reviewed on 29 June 2026 by Soraia Leite BA, MSc | Clinical Operations Leader & Editorial Expert Buvidal has transformed the treatment landscape for opioid dependence by offering a
Jun 296 min read
How Long Does Methadone Stay in System?
This article explains how long methadone stays in the body, the factors that influence its metabolism and detection, drug testing windows, and the importance of medically supervised detoxification for safe, long-term recovery. Page Reviewed on 29 June 2026 by Soraia Leite BA, MSc | Clinical Operations Leader & Editorial Expert Methadone is a long-acting synthetic opioid medication available as an oral linctus (liquid) or tablet formulation and is used primarily in opioid subs
Jun 298 min read
How Long Does Alcohol Stay in Your System?
This guide explains how long alcohol stays in the body, the factors that affect alcohol metabolism and detection, potential health risks such as poisoning and withdrawal, and the benefits of medically supervised outpatient treatment for alcohol dependency. Page Reviewed on 22 May 2026 by Soraia Leite BA, MSc | Clinical Operations Leader & Editorial Expert Alcohol affects every individual differently, and one of the most common medical questions people ask is: how long does al
May 228 min read
How Does Alcohol Affect Your Kidneys?
The kidneys are among the body’s most important filtration organs, responsible for removing waste products, regulating fluid balance, maintaining electrolyte stability, and supporting healthy blood pressure. Although many people associate alcohol primarily with liver damage, excessive drinking can also place substantial strain on kidney function. Alcohol affects the kidneys in both the short and long term. Even occasional heavy drinking may disrupt fluid regulation and blood
May 227 min read
What Are the Side Effects of Buprenorphine?
Buprenorphine is one of the most widely used medications in modern opioid addiction treatment and is considered both safe and effective when prescribed under specialist medical supervision. At The OAD Clinic, buprenorphine forms part of bespoke outpatient treatment plans designed to help patients stabilise safely while reducing cravings and withdrawal symptoms. As with any medication, however, patients may experience side effects during treatment - particularly during the ear
May 226 min read
What is Buprenorphine? A Complete Guide
Buprenorphine is a prescription medication used in the treatment of opioid dependence and, in some cases, moderate to severe chronic pain. For patients navigating opioid addiction recovery, understanding what buprenorphine is and how it works can be an important first step towards safer, medically supervised outpatient treatment. At The OAD Clinic, buprenorphine forms part of a bespoke and personalised outpatient approach to opioid addiction treatment, helping patients stabil
May 158 min read
How to Choose the Right Rehab in London for Your Recovery
Choosing among the many rehabs in London can feel overwhelming, but finding the right one is essential for lasting recovery. Whether you...
Aug 10, 20256 min read
What Is Teetotalism? Exploring Its Benefits and Challenges
Teetotalism is a lifestyle choice and it means that you have opted for complete abstinence from alcohol. The reasons why people choose...
Aug 10, 20255 min read
Why Discipline in Recovery Matters for Overcoming Addiction
Discipline plays a crucial role in overcoming drug addiction, guiding individuals toward stability, security and especially:...
Aug 10, 20255 min read
How Naltrexone Tablets Help Break the Cycle of Opioid Addiction
Learn how naltrexone treatment works as an effective treatment for opioid addiction by blocking cravings and supporting long-term recovery. Learn how it differs from methadone and buprenorphine.
Aug 9, 20257 min read
ADHD in the UK: Diagnosis, Benefits, and Support Systems
Introduction Attention Deficit Hyperactivity Disorder (ADHD) is no longer the misunderstood condition it once was. In recent years, the...
May 28, 20254 min read
Living with ADHD: Tips for Families, Friends, and Individuals
Explore expert tips for managing ADHD.
May 15, 20253 min read
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