If Ceclor is unavailable, can I give my son Amoksiklav?

Amoksiklav and Ceclor are two different antibiotics, they are not equivalents and these drugs should not be used interchangeably without consulting a doctor. Substitution may not have the expected effects when it comes to treating the infection due to differences in spectrum of action. I attach a link to the availability of Ceclor granules (tablets and capsules are not available) in pharmacies integrated with GdziePoLek from Warsaw, you can also search in other locations. Perhaps it will be possible - despite the really low availability - to find the drug in your area: https://www.gdziepolek.pl/produkty/16202/ceclor-granulat-do-wytworzenia-zawiesiny/apteki If it turns out to be impossible, then in order not to delay the start of treatment, it is worth using a telephone consultation: https://www.gov.pl/web/zdrowie/tpk or direct at the point of Night and Christmas Health Care.