The Oregon attorney general has sued the makers and marketers of 5-Hour Energy, alleging they engaged in deceptive advertising.

The lawsuit filed Thursday in Portland contends the company falsely claims customers get extra energy and focus from a unique blend of ingredients, when the effect actually comes from a concentrated dose of caffeine.

Oregon has been part of a group leading a 33-state investigation into the accuracy of the product's claims.

The suit also targets claims that users don't experience a crash when the effects subside and that the product is OK for adolescents.

The suit names Living Essentials LLC and Innovation Ventures LLC as defendants.

5-Hour Energy spokeswoman Melissa Skabich said state Attorney General Ellen Rosenblum is grasping at straws and the company will defend itself against what Skabich called civil intimidation.