Do vitamin D3, Cyclo 3 Fort, Vitamin B Complex or Magnesium contain gluten? Which of these drugs can cause diarrhea?

You did not give the exact names of products with vitamin D3, vitamin complex B and magnesium - there are many preparations on the market with these ingredients that contain various excipients. Cyclo 3 Fort does not contain gluten, but studies on the side effects of this drug have observed a frequent occurrence of diarrhea, which quickly disappears after discontinuation of treatment. I'm providing helpful resources: https://www.gdziepolek.pl/artykuly/jak-zwalczyc-biegunke https://www.gdziepolek.pl/artykuly/czy-bac-sie-dzialan-niepozadanych-lekow Reporting Adverse Reactions allows you to gather more information about the safety of medicines and update data about them, which can help other patients in the future. We wrote about how to report them here: https://www.gdziepolek.pl/artykuly/jak-i-dlaczego-zglaszac-dzialania-niepozadane Side effects of drugs can also be reported individually: https://www.urpl.gov.pl/pl/produkty-lecznicze/monitorowanie-bezpieczeństwa-leków/zg loost-side-effect-0