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[3][4][9][10]. There is no evidence that this specific combination (amoxicillin + ampicillin) is approved or commonly used as a fixed-dose product.