Is it best to use penicillin drip for urinary tract infections?

Patient's question:

Urinary tract infection blood in urine

Doctor's answer:

For E. coli infection, ampicillin is often combined with gentamicin, carbenicillin with gentamicin, cephalosporin with gentamicin or kanamycin, or amikacin. For Proteus infection, furazolidone with erythromycin is frequently used, or penicillin derivatives with gentamicin or kanamycin. For Pseudomonas aeruginosa infection, ampicillin or carbenicillin is often combined with gentamicin or kanamycin. For Staphylococcus aureus infection, penicillin I or II is often combined with cephalosporin or gentamicin, or erythromycin with gentamicin or kanamycin.