SAN DIEGO (KGTV) - The U.S. Department of State is warning Americans who travel to Mexico to be cautious of the alcohol they drink.
The State Department's website updated its travel information for Mexico to include alcohol-related information.
"There have been allegations that consumption of tainted or substandard alcohol has resulted in illness or blacking out. If you choose to drink alcohol, it is important to do so in moderation and to stop and seek medical attention if you begin to feel ill."
The warning comes after a 20-year-old Wisconsin woman drowned in January at a five-star resort in Playa del Carmen, according to ABC News .
Abbey Conner and her brother Aaron had a blood alcohol level of about .25 when they went swimming, the report said.
An Ohio couple who stayed at an all-inclusive resort in Mexico this month also reported something strange about their final round of margaritas, according to WCPO .
They noticed the drinks were different colors before they blacked out.
Doctors and resort managers said they had simply had too much to drink.
According to a 2015 report from the Mexico Tax Administrative Service, 43 percent of all alcohol consumed in Mexico is produced illegally.