Cefalexin is a prescription drug that has a bactericidal effect by inhibiting bacterial cell envelope synthesis. This active ingredient has been recorded to be effective against penicillinase-producing Staphylococcus aureus strains resistant to Penicillin or Amoxicillin, some strains such as Escherichia Coli, Proteus mirabilis, Shigella, Klebsiella spp...