For physicians and pharmacists

Drug interactions.
AI reads SmPCs. You decide.

Up to 15 medicines at once•Updated daily from the Register•SmPC quotes (section 4.5)

How it works

01
Updated daily from the Register
Every day we sync our database with the Polish Register of Medicinal Products - new medicines, withdrawals and changes to the product characteristics. Last update: 23 October 2026, 07:20.
02
Missing medicines from the EU register
3,657 medicines (26% of the database) have no SmPC or leaflet in the Polish Register. We extract them from the official documentation of the EU Community Register. LEKolizja is the only service in Poland with the complete database.
03
22 seconds on average
That is how long a full medicine set takes to analyse.
04
13,682 medicines in the database
97.9% of the medicines registered in Poland, prescription and over-the-counter (OTC).
05
Up to 15 medicines at once
Check interactions between as many as 15 medicines at a time. The limit depends on the plan.
06
Multi-level interaction analysis
Not just the brand name - we also look for connections by active substance, pharmacological class and mechanism of action.

About the author

Jakub Gierłachowski

Mathematician10+ years in AI5+ years in pharma

I am a mathematician and have worked in artificial intelligence for over 10 years, including more than 5 years building AI solutions at a large Swiss pharmaceutical company.

I built LEKolizja because I knew this could be done better today. I wanted a tool that makes working with drug interaction information faster and more convenient, without drifting away from what matters most - the content of the official product characteristics (SmPC).

Outside work you will most likely find me in the mountains or on a squash court.