Regulators say there is no evidence that the milk poses a danger or that a live virus is present
Kirill Dmitriev, head of the country's RDIF sovereign wealth fund, said Russia had already received requests from more than 20 countries for 1 billion doses of its newly-registered COVID-19 vaccine.
He was speaking after President Vladimir Putin announced the approval after less than two months of human testing.
The speed at which Russia is moving to roll out the vaccine has prompted some international scientists to question whether Moscow is putting national prestige before solid science and safety.