RIVERSIDE, Calif. -- A 50-year-old Riverside man who sipped an energy drink that may have been tampered with became sick over the weekend, police said.

The man purchased a six-pack of Gatorade G2 on Friday night at the Vons supermarket at La Sierra and Magnolia avenues in Riverside, said spokesman Steven Frasher of the Riverside Police Department.

On Sunday, he drank from one of the bottles, noticed the taste was not right and became ill a short time later, Frasher said.

He experienced a burning sensation on his tongue, intense thirst, sweating and accelerated heart rate, KNBC's Mary Parks reported.

A neighbor took him to Parkview Community Hospital Medical Center, where he was treated and released, he said.

It was unclear whether the drink had been tampered with, but as a precaution, the Gatorade G2 fruit punch product was removed from the La Sierra Vons store shelves, Frasher said.

Vons, a division of Safeway Inc., is cooperating with the investigation, Frasher said.

Gatorade and similar products have a consumer safety seal that should be intact when purchased.

Anyone with information about the incident was asked to call Riverside police at 951-353-7100.