WASHINGTON (AP) — E-cigarette giant Juul is pushing into TV with a multimillion-dollar campaign touting its vaping device as an alternative for middle-age smokers. And that's raising concerns among health activists and others.

Juul devices have not been approved by the Food and Drug Administration as a means of helping smokers quit.

Anti-smoking groups say the company is making unproven claims for its product, and they want the FDA to crack down.

The FDA says it closely scrutinizes potentially false, misleading or unsupported claims.

Juul, for its part, says it devices are designed to help people "switch" from cigarettes and are not intended to be used as kick-the-habit products.