Keep it in one box, out of children's reach. Medicines in their original packs, with the leaflet. No doses here: always follow the leaflet or ask a pharmacist.
Check dates every few months and after each use. Prescription medicines are not suggested here: ask your doctor.
Sources: the Polish government Safety Guide, pacjent.gov.pl, NHS home medicine cabinet advice and the Red Cross pet first-aid kit. Draft, adjust to your household.