With 2 clinics located in Central London and 2 in North-West London, Dr Arun Rajendran takes pride in offering expert, friendly, and effective care for a comprehensive range of conditions affecting the gullet, stomach, colon, and liver.
mailgastro@pm.me
London clinic and Onewelbeck
BMI The Clementine Churchill Hospital
OSD Healthcare
Persistent upper abdominal discomfort and indigestion that won't go away can take a real toll on your day-to-day life.
Dr. Arun Rajendran offers accurate diagnosis and personalised functional dyspepsia treatment in London — so you can eat, work, and live without the constant worry.
Specialist gastroenterologist, London.
Patient Reviews.
Compassionate Specialist Care
Gastroenterology London
Functional dyspepsia is a common but frequently misunderstood digestive condition.
It causes persistent discomfort or pain in the upper abdomen (including bloating, fullness, and nausea) without any structural damage visible on investigation.
It is one of the most common reasons people seek specialist gastro care in the UK.
Facts:
Functional dyspepsia rarely has a single cause. A combination of factors can trigger and maintain symptoms.
The stomach empties food too slowly, leading to prolonged fullness and bloating.
The nerves of the upper gut become oversensitive, making normal digestion feel painful.
A bacterial infection of the stomach lining found in some patients that can drive persistent symptoms.
Anxiety, depression, and chronic stress affect how the gut functions.
Fatty, spicy, or large meals, eating too quickly, and excessive caffeine or alcohol are well-known triggers.
NSAIDs (like ibuprofen and aspirin) can irritate the stomach lining.
Symptoms vary from person to person and often come and go.
Persistent pain or discomfort in the upper abdomen (epigastrium), uncomfortable fullness after eating, early satiety, bloating, nausea, burning or gnawing sensation.
Excessive belching/wind, heartburn or acid taste, reduced appetite/fear of eating, fatigue, low mood, anxiety around meals.
Seek prompt specialist advice for unintentional weight loss, difficulty swallowing, vomiting blood or dark material, symptoms waking you at night, or new/worsening symptoms in anyone over 55.
You deserve a clear diagnosis and a treatment plan that actually works for you — not another wait-and-see.
Functional dyspepsia is a diagnosis of careful exclusion. Dr. Rajendran takes a thorough approach, starting with a detailed consultation.
Full review of symptoms, eating habits, medications, stress levels, and family history.
Full blood count, inflammatory markers, coeliac antibodies, liver and thyroid function.
Breath test, stool antigen test, or endoscopic biopsy to detect Helicobacter pylori.
A camera investigation of the oesophagus, stomach, and upper small intestine to rule out ulcers or gastritis.
Reiteration of red flag symptoms (dysphagia, weight loss, vomiting blood, etc.).
Effective management combines medication, lifestyle adjustments, and ongoing support, tailored to your symptom pattern.
Short course of antibiotics combined with a PPI. Eradication often provides lasting relief.
PPIs or H2 blockers to reduce acid; prokinetics for gastric emptying; low-dose antidepressants (neuromodulators) for visceral sensitivity.
Gut-directed cognitive behavioural therapy (CBT), hypnotherapy, mindfulness, and stress reduction strategies.
Regular follow-ups, flare-up management strategies, dietitian referrals, and access to a wider specialist network.
Small and consistent changes to daily habits can meaningfully improve symptoms.
Eat smaller/frequent meals, eat slowly, reduce fatty/spicy/processed foods, keep a food diary, and limit caffeine/alcohol/carbonated drinks.
Wait two hours before lying down after meals, maintain a healthy weight, stop smoking, establish regular mealtimes, and wear loose clothing.
Manage stress actively, practice relaxation techniques (breathing, yoga), prioritise quality sleep, and take gentle regular exercise.
Expert, friendly, and effective private gastro care — because you deserve more than a rushed appointment.
Thorough investigation before treatment, with a clear explanation in plain English.
Every plan is built around your specific diagnosis and lifestyle — not a generic protocol.
Continued follow-up, flare-up management, and access to a wider specialist network across London.
Conveniently located across central and south London, often available within days.
Thousands of patients across London and the UK have trusted
Dr Arun Rajendran to get to the bottom of their digestive symptoms.
Dr. Arun Rajendran has been treating patients for over 10 years and prides himself on warm, friendly, and efficient gastroenterology care.
We are a self-pay clinic but also accept all major UK healthcare insurance providers.
Our London Clinic Locations
20 Devonshire Place, London, W1G 6BW (Wed: 17:45 – 19:30).
Welbeck Street, London, W1G 0AR (Mon: 18:00 – 20:00).
Sudbury Hill, Harrow, HA1 3RX
(Tue 18:00–20:00 · Alt Sat 08:30–10:30).
One Medical House, Hemel Hempstead, HP2 7YU
(Saturday: 09:00 – 11:00).