Amoxicillin trihydrate is widely used as an antibiotic to treat a variety of bacterial infections. It is effective against infections in the respiratory tract, such as bronchitis and pneumonia, as well as ear, nose, and throat infections like sinusitis and tonsillitis. It is also prescribed for urinary tract infections, skin infections, and certain gastrointestinal infections caused by susceptible bacteria. Additionally, it is used in combination with other medications to treat stomach ulcers caused by Helicobacter pylori. Its broad-spectrum activity makes it a common choice for both adults and children, often available in oral forms like tablets, capsules, and suspensions for easy administration.