Medications — Netherlands

Most prescription medicines come into the Netherlands without any paperwork, but if yours falls under the Dutch Opium Act you need an official certificate to carry it in — and that catches drugs Americans take every day, including ADHD medication, strong painkillers, sleeping pills and medicinal cannabis. You get the certificate from the authority in the country you are flying from, not from the Dutch government. Keep everything in the original packaging and in your hand luggage; customs can check you even if you are only changing planes at Schiphol.