Facebook froze Venezuelan President Nicolás Maduro’s page after he claimed without evidence that a herbal remedy could cure Covid-19.
He claimed in January that a thyme herb solution could cure the disease. He will be unable to post for 30 days.
The company said the leader had repeatedly violated its policies on coronavirus disinformation.
Mr Maduro is not the only world leader to face a pushback from social media companies over Covid.
US President Donald Trump and Brazil’s Jair Bolsonaro have also faced action over Covid posts.
Last year, Facebook deleted a video from Brazil’s President Bolsonaro over a claim that the drug hydroxychloroquine was totally effective in treating the virus.
And previously a Twitter post by Mr Maduro about a different fake remedy was also deleted.
In October, Facebook deleted a post in which Donald Trump claimed Covid-19 was “less lethal” than the flu.
It removed another in August that included a video of him falsely asserting that children were “almost immune from Covid-19”.
Covid-19 disinformation on social media is a widespread problem.