Ms. Ljiljana Krsteska,

Please see the link below for a patent for your reference where "Domiphen Bromide" is one of the numerous preservatives claimed for oral liquid suspension in the range of 0.01% to 0.5% w/v.

URL: https://data.epo.org/publication-server/document?iDocId=3148047&iFormat=2

Please also see the link below, where "Domiphen Bromide" is indicated as an antibacterial preservative.

URL: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/ingredReq.do?id=3337&lang=en