Does Urosal also destroy these good bacteria?

Urosal is not an antibiotic, so it does not require a probiotic. Metenamine is a compound that undergoes hydrolysis, releasing formaldehyde, which has a bactericidal effect. The antibacterial spectrum includes Gram-positive and Gram-negative bacteria. It is therefore very wide. There are no contraindications to the simultaneous use of probiotics Urolact and Lactovaginal. These preparations have an adjunctive effect in the treatment of active infections of the genitourinary system. I enclose additional information that may be helpful: https://www.gdziepolek.pl/app/artykuly/zakazenie-drog-moczowych