Antibiotics are one of those areas in medicine that seem impossible to master, and yet you can’t escape them. Everyone uses them, for better or for worse.
In the era of seemingly all-knowing chatbots and 100-page guidelines for every problem, finding information has never been easier.
What truly matters, however, is the ability to contextualize, to distinguish what is relevant from what is not, and to apply it to a real patient in front of you.
That is the real challenge.
There is a logical pattern behind antimicrobial therapy that every clinician can understand, regardless of specialty or area of practice. Once you see it, you can’t unsee it.
If you understand what you’re doing, you won’t get stuck. And you are far less likely to make a serious mistake.
That is why my lectures and cheat sheets focus on:
Helping you internalize the underlying logic that applies across different infections
Highlighting the most common and dangerous mistakes we see in real clinical practice
Addressing frequent dilemmas and sources of confusion
Answering the questions I most often get from fellow clinicians about infections and antibiotics
These materials will make navigating guidelines and recommendations much easier. Instead of passively following them, you’ll learn to anticipate their conclusions, understand their limitations, and recognize when they don’t apply to the clinical situation in front of you. Ultimately, you will make smarter, safer, and more defensible decisions at the bedside.
Access all courses, mini-courses, lectures, and clinical updates in one place.
A structured way to think about antibiotics, organized by real clinical categories and accessible anytime.
FAQ section
For medical students and clinicians who want a clear, practical framework for antimicrobial decision-making in real clinical practice.
Unlimited access to all courses, video lessons, downloadable cheat sheets, and future updates while your membership is active.
No. All content is for educational purposes only and is not a substitute for clinical judgment, local protocols, or individualized patient care.
No. The content is structured to build understanding step by step, starting from core principles and progressing to real-world applications.
You have access for as long as your membership remains active.
Yes. You can cancel your membership at any time. Your access will continue until the end of the current billing period.
I'm Dr. Viktor Kotarski, an infectious diseases specialist and intensivist from Zagreb, Croatia. I graduated from the University of Zagreb School of Medicine in 2010 and completed my residency in infectious diseases in 2018 at the University Hospital for Infectious Diseases in Zagreb.
I began my career working on general wards and in the emergency department. Since 2018, I have worked primarily in an intensive care unit specializing in the treatment of severe community-acquired and hospital-acquired infections, including CNS infections. This experience has allowed me to manage infectious diseases across the full spectrum of severity, from mild and self-limited conditions to life-threatening infections caused by multidrug-resistant pathogens.
I have participated in numerous conferences, seminars, and workshops as a lecturer and moderator. During the COVID-19 pandemic, recognizing the need for clearer and more practical education in infectious diseases and antimicrobial therapy, I began creating educational videos and online courses for medical professionals and students. My goal is to help you learn the essential principles I’ve gathered over the years, in a way that is structured, practical, and time-efficient.
I’m confident that my lectures will support your clinical work and, hopefully, make your professional life at least a little easier.
All content provided on this website and in my courses is intended for educational purposes only and is designed for medical students and healthcare professionals. It does not constitute medical advice and should not be used as a substitute for clinical judgment or individualized patient care. Always consult relevant guidelines and local protocols and make clinical decisions based on the specific circumstances of each patient.
© 2026 Dr. Viktor Kotarski. All rights reserved.