Premise: Panadol night is a GlaxoSmithKline painkiller intended for use at night. It consists of 500 milligrams of paracetamol, 25 milligrams of diphenhydramine hydrochloride (a sedating antihistamine) and other "non-hazardous ingredients" It is sold in Australia, Cyprus United Kingdom, Ireland, New Zealand and the Middle East. It became available as an over the counter medication in the UK in 1996.
Hypothesis: Panadol night became available as an over the counter medication in the UK during the last decade of the 20th century