Doxycycline Hydrochloride Capsules IP are used to treat a range of bacterial infections, including respiratory infections, urinary tract infections, and acne. As a tetracycline antibiotic, doxycycline works by inhibiting bacterial protein synthesis, which stops the growth and spread of bacteria. Typically taken once or twice daily with food to minimize stomach upset, it helps in effectively managing infections. Common side effects include nausea, diarrhea, and sensitivity to sunlight. It's important to complete the full course of treatment to prevent the development of antibiotic-resistant bacteria. Avoid taking it with dairy products or antacids, as these can affect absorption. Always follow your healthcare provider’s instructions and consult them with any concerns.