Caution to avoid vaping products with THC oil, vitamin E acetate

The US Food and Drug Administration (FDA) has found significant amounts of vitamin E acetate in most of the tetrahydrocannabinol (THC) vaping products tested from people who have become ill with severe respiratory illness. The agency says that "it is prudent to avoid inhaling this substance."

However, not all of the people who have become sick have used these products, so the FDA cautions that it cannot yet say that the vitamin E acetate is causing illness.

The agency notes that people cannot be certain whether a vaping product contains vitamin E acetate, and it reminds users not to buy vaping products from the street. Consumers should also avoid using THC oil or adding material to store-purchased vaping products.

To date, over 450 people have developed severe respiratory illness after vaping.