Searching for a chemists or pharmacy? Late night chemist provides details of chemist shops and their opening hours. Each area of the country has a rota of duty chemist shops, who open their pharmacy out of normal opening hours to allow prescription medicine (drugs prescribed by a doctor) to be dispensed and over the counter (OTC) remedies such as cold and flu medicines to be purchased. In an emergency a pharmacist can allow an emergency supply of drugs providing certain conditions are met.