A federal judge has ruled that E-cigarette companies must apply to the Food and Drug Administration for a public health review within 10 months.
The FDA has to impose the May 2020 deadline, following a previous decision by the judge in a lawsuit filed by health groups including the American Academy of Pediatrics.
In 2017, the agency allowed E-cigarettes to stay on the market until 2022 before companies applied for authorization.
Products were also permitted to remain on the market indefinitely during the review.
The judge ruled in may those actions by the FDA were illegal.
Products that submit applications by the May deadline will be allowed to remain on the market for up to a year during the review process.
The FDA can remove products that miss the deadline.