If your pet is on a vet-prescribed diet for a medical condition, or a specific long-term medication, don't assume the exact same brand or formulation will be easy to find in Sweden. Major prescription-diet brands sold through veterinary clinics are generally available, but a specific product line or flavour can vary by market, so it's worth checking with a Swedish vet clinic in advance if your trip is more than a short one.

Bringing enough of your pet's existing food or medication to cover the trip, rather than planning to restock locally, is the lower-risk approach for anything where a substitution could cause a problem. If you do need a refill while in Sweden, a copy of the original prescription or a letter from your home vet makes the process at a Swedish vet clinic considerably smoother.

For medication specifically, Swedish pharmacies operate under rules set by Läkemedelsverket, the Swedish Medical Products Agency, and most veterinary medicines beyond basic tick and flea prevention require a prescription from a vet, whether that's a Swedish vet or a valid prescription carried from your home country — a Swedish vet can typically assess and reissue a prescription from an existing diagnosis if needed.