Drink Sentry is a user-friendly drink-testing coaster designed to provide an additional layer of security for anyone drinking in public. Drink tampering is always a risk in busy locations, potentially leading to catastrophic consequences if a tainted drink is consumed. Drink Sentry disposable coasters feature built-in test strips that react to a range of chemical compounds, making it simple to see if common drugs such as GHB, ketamine, and various benzodiazepines are present in the drink. Simply place a few drops of the drink onto one of the test strips along the edge of the Drink Sentry coaster, and the color will change if one of the specified substances is detected. While nothing can replace general vigilance and awareness, Drink Sentry provides increased peace of mind for a variety of social environments.