Research
L. acidophilus Strain Er 317/402 'Narine' in Childhood Leukemia
A look at the clinical research into the Narine strain as supportive care for children undergoing treatment for leukemia.
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D'doctor UKNatural Armenian
Natural Armenian
Probiotics
in the UK
Heritage-rooted formulations with the unique Narine strain, delivered across the UK and backed by modern science.
Discover our products
Natural Probiotics in the UK
Discover Narine-based probiotics, designed to work naturally with your body. Formulated with Lactobacillus acidophilus ER-2 strain 317/402 and delivered across the UK.
Our Products
A focused range of Narine-based probiotics and postbiotics, each formulated for a specific gut-health need.
D'doctor GastroFix
Advanced postbiotic for fast relief
A new-generation active postbiotic that acts in just 15 minutes. Formulated to soothe digestive discomfort, restore intestinal balance and protect the gut lining when you need it most — ideal for travel, meals out and everyday flare-ups.
D'doctor MegaForte
100 mg · 30 capsules · Post-antibiotic support
A high-strength live Narine probiotic designed to rebuild gut flora after antibiotics, illness or periods of stress. Supports healthy digestion, immune resilience and better nutrient absorption from every meal.
D'doctor MegaFast
200 mg · 30 capsules · For the whole family
Live Lactobacillus acidophilus Narine in a fast-release capsule, gentle enough for children and adults alike. A daily foundation for balanced gut flora, comfortable digestion and everyday immune support.
D'doctor MegaTabs
500 mg · 30 tablets · Everyday routine
A convenient daily tablet with the signature Narine strain (ER-2 317/402). Helps maintain a healthy microbiome, ease bloating and support regular digestion — a simple habit to build into your morning.
GastroFix by D'doctorFast relief
Acts in
15
MinutesFast relief
when you need it most
GastroFix supports fast relief and gut protection when you need it most — a new-generation active postbiotic that goes to work in just 15 minutes.
Discover GastroFix
Our best-selling probiotic supplements
Community favourites, chosen by families and professionals across the UK — recognised for helping restore gut balance, ease digestion and support overall wellbeing.
About Us
About D'doctor
D'doctor was created to help people take control of their health in today's fast-changing world. Real wellbeing starts with understanding your own body, paying attention, learning, and making informed decisions every day. Rooted in a heritage of traditional wellness knowledge and supported by modern scientific evidence, D'doctor focuses on education and awareness.
Our premium formulations — from the unique Narine strain and the legendary Nissle 1917 to the advanced GastroFix by D'doctor — represent the pinnacle of gut health innovation, operating on a "Mega Fast" and "Mega Forte" level.
15 Years of Experience in Gut Health — Anna Bisaggio
Learn moreExplore Our Main Probiotic Categories
When choosing probiotics in the UK, it helps to know which range suits you best. Our formulas are grounded in careful research and organised into three main categories.
Most Popular Probiotics
MegaCaps, MegaBiotics and MegaFast: a solid foundation for your daily gut-health routine.
Support for the Brain
Always on Guard and Gastrointestinal Tract for IT support the natural gut-brain connection.
Probiotics for Women
A dedicated range designed to support women through every stage of life.
Key Benefits of Probiotics for a Healthier Life
Their benefits go far beyond digestion: they support nutrient absorption and strengthen your immune system.
01.
Improved Digestive Health
Restores gut balance, making everyday digestion more comfortable and effective.
02.
Stronger Immune System
Immune strength starts in the gut. Keep your microbiome balanced and resilient.
03.
Better Nutrient Absorption
Get the most from every meal — more bioavailable proteins, vitamins and minerals.
04.
Balanced Gut Flora
Reduce harmful microbes and strengthen the beneficial bacteria your body relies on.
05.
Overall Wellbeing
More energy, resilience and better mood to take on everyday challenges.
Articles
Practical, science-led reads on probiotics, gut health and everyday wellbeing.
Research
Armenian Dairy Lactobacilli: Antifungal Activity
How lactobacilli isolated from traditional Armenian dairy products inhibit the growth of unwanted fungi and yeasts.
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Research
Lactic-Acid Bacteria in Armenia: Radioprotective Studies
Decades of Armenian research into the radioprotective properties of lactic-acid bacteria and what it means for gut health today.
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23 June 2026
Which is the best probiotic? A guide to choosing wisely
The best probiotic isn't the one with the highest CFU count. It's the one with the right strain for your needs, backed by clinical evidence.
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25 May 2026
Which foods contain probiotics and how to spot them
Yoghurt, kefir, sauerkraut, kimchi, kombucha… learn how to identify fermented foods that still contain live cultures.
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22 May 2026
Is it good to take probiotics every day? Here's what we know
Taking probiotics daily is safe for most people. Here's when a daily routine makes sense and when to adjust it.
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