Hasselhoff was reportedly rushed to the hospital on Sunday night amid allegations that he was suffering from alcohol poisoning.
According to TMZ.com, the Baywatch star's 17-year-old daughter Hayley discovered her father "extremely drunk" and called her mother Pamela Bach, whose friend called the emergency services.
Hasselhoff was taken to the hospital from his home in Encino, California.
Just last May, the actor was hospitalized with alleged alcohol poisoning, although his spokesperson played down the incident.
And Hasselhoff is blaming his latest health scare on a drug he has been prescribed to treat an ear infection.
A spokesperson says Hasselhoff suffered an "equilibrium imbalance" when Antivert -- which has side effects including drowsiness, dry mouth and blurred vision -- reacted with the Antabuse medication he is taking to treat his alcoholism.
The rep adds that Hasselhoff was voluntarily taken to the hospital for treatment, and released after one hour.
The 57-year-old's alcohol problem was exposed in 2007 when home video footage of the star in a drunken state leaked onto the Internet. He later checked into a rehabilitation facility in a bid to kick his drink demons.
(c) 2009 WORLD ENTERTAINMENT NEWS NETWORK LTD. All global rights reserved. No unauthorized copying or re-distributing permitted.