This cola-flavored candy could have more fizz than you’re expecting.

Haribo is investigating how one of its popular gummy products apparently became tainted with cannabis in the after several people reportedly fell ill in the Netherlands.

Haribo has issued a nationwide recall in the EU country as a result.

Customers who were enjoying the Haribo Happy Cola F!ZZ gummies, including multiple members of a single family, said they felt “dizziness” after eating the sweets, according to the Netherlands Food and Consumer Product Safety Authority (NVWA).

“Samples were taken and cannabis was found in them,” the agency told Dutch outlet Hart van Nederland.

So far, only a single batch of candy in the Netherlands is suspected of contamination — not supplies in the US or elsewhere, the company said.