The true statements about caffeinated alcoholic beverages are:
- Caffeine does not change the body's ability to metabolize alcohol.
- Caffeine may make the person feel more alert.
The statements "caffeine will speed up the metabolism of alcohol" and "caffeine will lower the BAC" are not true. Caffeine does not affect the rate at which the body metabolizes alcohol or lower blood alcohol concentration (BAC); it may simply mask some of the intoxicating effects of alcohol, making a person feel more alert while they are still impaired.