amoxicillin + ampicillin

Amoxicillin + ampicillin is a combination of two beta-lactam antibiotics from the penicillin class. Both drugs act by inhibiting bacterial cell wall synthesis through binding to penicillin-binding proteins, leading to cell lysis and death. Amoxicillin and ampicillin have overlapping but distinct spectra of activity against gram-positive and some gram-negative bacteria. This combination is not a standard or widely marketed formulation; both are typically used individually or in other combinations (e.g., with beta-lactamase inhibitors). The primary indications for each include treatment of infections such as those affecting the respiratory tract, urinary tract, skin, gastrointestinal system, and certain sexually transmitted infections. There is no evidence that this specific combination (amoxicillin + ampicillin) is approved or commonly used as a fixed-dose product.