The tetracycline class refers to a group of broad-spectrum antibiotics that are effective against a variety of bacterial infections. They work by inhibiting protein synthesis in bacteria, which prevents them from growing and multiplying. Commonly used tetracyclines include doxycycline and minocycline, which are often prescribed for conditions like acne, respiratory infections, and certain tick-borne diseases. Tetracyclines are generally taken orally and can be used in both adults and children, although their use in young children is limited due to potential effects on tooth development. It's important to take these medications as directed, as improper use can lead to antibiotic resistance, making infections harder to treat.