TOKYO -- Prices for canned oxygen have skyrocketed in Japan, especially online, amid last month's surge in coronavirus cases, despite warnings from medical experts that it cannot be used to treat COVID-19 symptoms.
Canned oxygen is a recreational product used by athletes, mountain climbers and others as a portable supplement after heavy exertion. A container holding around five liters normally costs 700 yen to 900 yen ($6 to $8), manufacturer Iwatani says.
