Medical Team

At I Am Committed To Providing You With The Most Up To Date Factual Probiotic Information.

Meet Our Medical Review Team.

Dr Sara Mesilhy, MRCP, Gastroenterologist


Sara Mesilhy is a highly educated and skilled gastroenterologist who completed her Bachelor of Medicine, Bachelor of Surgery (MBBS) at Cairo University in January 2015. She then went on to pursue a Master's degree in the Gastroenterology Residency Program at Cairo University, which she completed in November 2022.

In addition to her formal education, Sara also holds a Membership in Internal Medicine from the Royal College of Physicians of the United Kingdom. She has been practicing as a Gastroenterologist since 2018, and has built a reputation for her expertise and dedication to her patients.

Sara is committed to staying up-to-date on the latest developments in her field, and is known for her tireless work ethic and compassionate care. She is a valuable member of the medical community, and is highly respected by her colleagues and patients alike. She is a superb addition to ProbioticReviewGirl and we are so lucky to have her.

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Dr Muhammad Usman, MRCP, Gastroenterologist


Dr Usman is an NHS Doctor and Gastroenterologist at Royal Derby Hospital. He has a deep insight into all aspects of writings related to health and sciences. Being a researcher, He has been a regular contributor to several journals related to health, medicine, and sciences. He is currently undergoing Higher Speciality Training in Gastroenterology and Hepatology. He is also a member of the Royal College of Physicians, London and Ireland.

Dr Usman has over 30 articles published in peer reviewed journals. His vast medical knowledge on gut health makes him perfect for reviewing ProbioticReviewGirl blog posts and pointing out any mistakes to fix.

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Kritti Jai, Registered Nurse & Midwife


Kritti Thumjaikul received her Bachelors in Nursing degree at the Faculty of Nursing, Chiang Mai University, Thailand in 2019 and shortly after went to work at a Bangkok Hospital and at a clinic.

She gained nursing experience at a Psychiatric Unit, Pediatric Unit and Midwife Unit as a Clinical Practicum. Her extensive knowledge in midwifery allows her to to share her expertise on our probiotics for pregnancy articles and infant probiotic guides.

She is a registered nurse and a certified midwife through the Thailand Nursing and Midwifery Council and has 5 years of experience as a nurse. Her time spent in a Gastrointestinal ward gives her experience in matters related to gut health and she has experimented with probiotic supplements in her own time.

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Dr Enrizza Factor, MD, PDS, Dermatologist


Dr. Enrizza P. Factor is a Philippine Dermatological Society (PDS) Board Certified, Dermatologist.

Dr. Factor is a Diplomate of the Philippine Dermatological Society and Fellow of the Philippine Academy of Dermatologic Surgey Foundation Inc. A member of the Philippine Academy of Cutaneous Surgery, an Associate of the Philippine Society of Venerology Inc

Dr. Factor graduated from the De Lasalle University-Dasmariñas, and received her medical degree from the De La Salle University - Health Sciences Campus 2007. She then went on to complete her dermatology residency in Skin and Cancer Foundation Inc. During training, Dr. Factor, she served as chief resident in her last year of training.

She has served as active consultant in Los Baños Doctors Hospital and Medical Center in Los Baños Laguna, The Medical City of South Luzon, Carmona Hospital and Medical Center, Unihealth Southwoods Hospital and Medical Center, Calamba Medical Center.

Upon completing her training, she embarked on her career in clinical dermatology, where she would begin to use all the skills of medical, surgical, and cosmetic dermatology for which she was trained. In addition to the primarily outpatient based practice, she also has worked as a consultant for hospital inpatients.

With this amount of experience and knowledge, Dr Enrizza Factor is able to review ProbioticReviewGirl articles with ease.

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