The accident occurred at Okhaldhunga district after the ill-fated van skidded off the road and fell some 200 metres down at Siddhicharan town.
"The van was reserved for ferrying a patient to hospital," Deputy Superintendent of Police said.
"On the way to hospital many people boarded the jeep with the capacity of five people," he said.
Two women and six men had died on the spot while a woman breathed her last while undergoing treatment at a hospital, Himalayan Times reported.
Also Read
Poor maintenance of roads and vehicles besides reckless driving contribute to many accidents in the mountainous country.
At least 14 persons, including three foreigners, two of them Israeli women tourists, were killed and 50 others injured on Friday when an over-crowded bus they were travelling in fell into a gorge in central Nepal.
About 30 people were killed and 40 others injured on October 6 when a crowded passenger bus veered off a hilly road and plunged into a gorge in western Nepal.