Personal medicines are allowed in reasonable quantities (a common guideline: up to one month's supply per medicine; prescription drugs should come with a doctor's prescription). Medicines containing narcotics or psychotropics — such as some painkillers and sleeping pills — must be declared, and excess quantities require approval.
Drones must be declared on entry, and flying is banned in some cities and near airports. E-cigarettes are fine for personal use but not for smoking in public places. Meat, dairy, fruit, seeds and other animal or plant products are prohibited.
Cash over USD 5,000 (or equivalent) must be declared. For valuables like cameras and laptops, keep purchase receipts to avoid trouble on departure. When in doubt, ask customs — asking is never embarrassing.
