Paxlovid can be used to protect people aged 12 and over with mild or moderate Covid symptoms who are at risk of severe disease. Pfizer says it cuts the likelihood of hospitalisation and death by 89 per cent.
It is said to work against Omicron and could be a game-changer in that people unwilling to get vaccinated might be prepared to pop a pill instead.
But the White House says only 265,000 treatment courses will be available initially and the order of 10 million will be delivered by about July.
That's a disappointing result for the US and the wider world.
President Joe Biden said: "We will work closely with [Pfizer] and provide any resource needed, including using the Defence Production Act if warranted."
The act has been used earlier in the pandemic to force companies to prioritise making some supplies. But the drug companies have retained control over production and profits from the vaccines - the most important weapons.
Surely if anything needs to be mass-produced it is this pill.