VAXCHORA effervescent powder and powder for oral suspension

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques. For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance. Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults. In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions. Patients commonly seek his care for: 

• seasonal and perennial allergies
• allergic rhinitis and chronic nasal symptoms
• asthma and breathing difficulties
• food and medication allergies
• urticaria, atopic dermatitis and skin reactions
• recurrent infections in children
• sports-related health questions
• general family medicine concerns

Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.

Dr Tetiana Fedoryshyn is a senior general practitioner, certified nutritionist, and psychologist with over 29 years of clinical experience. She combines classical internal medicine with modern approaches in lifestyle medicine, functional nutrition, and emotional health support.

Her focus is on helping patients regain health through deep understanding of symptoms, personalised nutrition plans, and evidence-based correction of deficiencies, stress-related conditions, and metabolic imbalances. Dr Fedoryshyn works with adults experiencing chronic conditions, fatigue, hormonal disruption, and post-stress exhaustion.

She integrates medical analysis, psychological insight, and real-life behaviour change tools to offer treatment plans tailored to each patient’s biochemistry, mental state, and lifestyle.

Main areas of practice:

• Chronic condition management and medical counselling
• Weight loss programmes based on metabolic profiling
• Diagnosis and treatment of micronutrient deficiencies
• Recovery from stress, burnout, and hormonal imbalances
• Emotional support and psychosomatic symptom care

Dr. Sergio Correa is a licensed general practitioner, aesthetic medicine specialist, and trichologist with experience in emergency care and preventive health. He offers online consultations in English and Spanish, supporting adult patients with a wide range of medical concerns – from acute symptoms to chronic condition management.His areas of focus include:

• General and urgent care: fever, fatigue, infections, digestive issues, respiratory symptoms, and other common concerns
• Chronic condition support: hypertension, high cholesterol, diabetes, thyroid issues
• Aesthetic medicine and dermatology: acne, skin ageing, hyperpigmentation, personalised skincare guidance
• Trichology: hair loss, scalp conditions, treatment strategies for men and women
• Preventive care: health check-ups, lifestyle advice, second opinions

Dr. Correa combines medical knowledge with an aesthetic and holistic approach to help patients improve both health and quality of life.

Dr Liudmyla Boichuk is a family medicine doctor providing diagnosis and treatment for a wide range of acute and chronic conditions in adults and children. She works with respiratory, cardiovascular and digestive system disorders and has extensive experience caring for patients with multiple coexisting conditions, where coordinated, whole-person management is essential.

She treats adults with respiratory illnesses such as pneumonia, COPD and bronchial asthma, as well as cardiovascular conditions including hypertension and ischaemic heart disease. Her practice also covers gastrointestinal complaints and chronic comorbidities that require careful, structured medical supervision.

Dr Boichuk provides care for children from birth, including acute respiratory viral infections, infectious diseases, pneumonia, bronchitis, bronchial obstruction syndromes and allergic reactions. She offers clear, evidence-based guidance to parents and ensures safe follow-up throughout the child’s recovery.

Her work also includes developing personalised immunisation plans and supporting families with long-term preventive care.

Known for her structured clinical approach and clear communication, Dr Liudmyla Boichuk offers patients of all ages comprehensive, reliable and evidence-based medical care.

Dr. Jonathan Marshall Ben Ami is a licensed family medicine doctor in Spain. He provides comprehensive care for adults and children, combining general medicine with emergency care expertise to address both acute and chronic health concerns.

Dr. Ben Ami offers expert diagnosis, treatment, and follow-up for:

• Respiratory infections (cold, flu, bronchitis, pneumonia).
• ENT conditions such as sinusitis, ear infections, and tonsillitis.
• Digestive issues including gastritis, acid reflux, and irritable bowel syndrome (IBS).
• Urinary tract infections and other common infections.
• Management of chronic diseases: high blood pressure, diabetes, thyroid disorders.
• Acute conditions requiring urgent medical attention.
• Headaches, migraines, and minor injuries.
• Wound care, health check-ups, and ongoing prescriptions.

With a patient-focused and evidence-based approach, Dr. Ben Ami supports individuals at all stages of life — offering clear medical guidance, timely interventions, and continuity of care.

Dr. Yevgen Yakovenko is a licensed surgeon and general practitioner in Spain and Germany. He specialises in general, paediatric, and oncological surgery, internal medicine, and pain management. He offers online consultations for adults and children, combining surgical precision with therapeutic support. Dr Yakovenko works with patients across different countries and provides care in Ukrainian, Russian, English, and Spanish.

Areas of medical expertise:

• Acute and chronic pain: headaches, muscle and joint pain, back pain, abdominal pain, postoperative pain. Identifying the cause, selecting treatment, and creating a care plan.
• Internal medicine: heart, lungs, gastrointestinal tract, urinary system. Management of chronic conditions, symptom control, second opinions.
• Pre- and postoperative care: risk assessment, decision-making support, follow-up after surgery, rehabilitation strategies.
• General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
• Injuries and trauma: bruises, fractures, sprains, soft tissue damage, wound care, dressing, referral when in-person care is required.
• Oncological surgery: diagnosis review, treatment planning, and long-term follow-up.
• Obesity treatment and weight management: a medical approach to weight loss, including assessment of underlying causes, evaluation of comorbidities, development of a personalised plan (nutrition, physical activity, pharmacotherapy if needed), and ongoing progress monitoring.
• Imaging interpretation: analysis of ultrasound, CT, MRI, and X-ray results, surgical planning based on imaging data.
• Second opinions and medical navigation: clarifying diagnoses, reviewing current treatment plans, helping patients choose the best course of action.

Experience and qualifications:

• 12+ years of clinical experience in university hospitals in Germany and Spain.
• International education: Ukraine – Germany – Spain.
• Member of the German Society of Surgeons (BDC).
• Certified in radiological diagnostics and robotic surgery.
• Active participant in international medical conferences and research.

Dr Yakovenko explains complex topics in a clear, accessible way. He works collaboratively with patients to analyse health issues and make evidence-based decisions. His approach is grounded in clinical excellence, scientific accuracy, and respect for each individual.

If you are unsure about a diagnosis, preparing for surgery, or want to discuss your test results – Dr Yakovenko will help you evaluate your options and move forward with confidence.

Dr. Karim Ben Harbi is a licensed general practitioner based in Italy. He provides online consultations for adults and children, combining international clinical experience with evidence-based medicine. His care approach is focused on accurate diagnosis, preventive care, and personalised health guidance.

Dr. Ben Harbi received his medical degree from Sapienza University in Rome. His training included hands-on experience in diverse settings — tropical medicine, rural healthcare, and urban outpatient practice. He also conducted clinical research in microbiology, exploring the role of the gut microbiome in chronic gastrointestinal issues.

You can consult Dr. Ben Harbi for:

• General health concerns, prevention, and primary care.
• Hypertension, type 1 and type 2 diabetes, metabolic issues.
• Cold, cough, flu, respiratory infections, sore throat, fever.
• Chronic digestive issues: bloating, gastritis, IBS, microbiome imbalance.
• Skin rashes, mild allergic reactions, basic dermatological complaints.
• Medication guidance, treatment adjustments, prescription review.
• Paediatric concerns — fever, infections, general well-being.
• Lifestyle optimisation: stress, sleep, weight, and diet counselling.

Dr. Ben Harbi offers reliable, accessible medical support through online consultations, helping patients make informed decisions about their health with a clear, structured, and compassionate approach.

Dr Daniel Cichi is a family medicine doctor with over 20 years of clinical experience. He provides online consultations for adults, supporting patients with acute symptoms, chronic conditions, and everyday health concerns that require timely medical guidance. His background includes work in emergency care, ambulance services, and family medicine, which allows him to assess symptoms quickly, identify warning signs, and help patients choose the safest next steps – whether that means home care, treatment adjustment, or in-person evaluation. Patients commonly consult Dr Daniel Cichi for: 

• acute symptoms: fever, infections, flu-like illness, cough, sore throat, shortness of breath;
• chest discomfort, palpitations, dizziness, fatigue, and blood pressure concerns;
• digestive problems: abdominal pain, nausea, diarrhoea, constipation, reflux;
• sexually transmitted infections, erectile dysfunction;
• muscle, joint, and back pain, minor injuries, post-traumatic symptoms;
• chronic conditions: hypertension, diabetes, high cholesterol, thyroid disorders, weight loss, hair loss;
• review and interpretation of lab tests, imaging reports, and medical documents;
• medication review and treatment adjustment;
• medical advice while travelling or living abroad;
• second opinions and guidance on whether in-person care is needed.

Dr Cichi’s consultations are structured and practical. He focuses on clear explanations, risk assessment, and actionable recommendations, helping patients understand their symptoms and make informed decisions about their health.

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

• High blood pressure, headaches, dizziness, swelling, palpitations.
• Diagnosis and management of hypertension, arrhythmias, and tachycardia.
• Metabolic syndrome, excess weight, high cholesterol.
• Chronic fatigue, insomnia, poor concentration, anxiety.
• Respiratory symptoms: colds, flu, sore throat, cough, fever.
• Digestive issues: heartburn, bloating, constipation, IBS symptoms.
• Chronic conditions: diabetes, thyroid disorders.
• Interpretation of lab tests and medical reports, therapy adjustment.
• Second opinion and decision-making support.
• Cardiovascular disease prevention and metabolic risk reduction.
• Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

Dr. Mar Tabeshadze is a licensed endocrinologist and general practitioner in Spain. She provides online consultations for adults, offering medical support for a wide range of endocrine conditions and related health concerns.

• Diagnostic consultations for suspected endocrine disorders
• Management of thyroid conditions, including in pregnant women
• Early detection and treatment of type 1 and type 2 diabetes, with personalised therapy plans
• Obesity treatment: identifying underlying causes of weight gain, combining medication and non-pharmacological strategies, and long-term support
• Diagnosis and treatment of endocrine-related skin, hair, and nail issues
• Ongoing care for patients with osteoporosis, pituitary, and adrenal gland disorders