Aminopenicillins such as ampicillin and amoxicillin have an extended spectrum of action compared with the natural penicillins; extended spectrum penicillins are effective against a wider range of bacteria.
Amoxicillin has a lower incidence of diarrhea than ampicillin and is the preferred drug in most cases.
Ampicillin and trimethoprim-sulfonamide have been used successfully in the treatment of infections caused by chloramphenicol-resistant strains.
Both adults and children may be given penicillin, ampicillin, or erythromycin.
Drug allergens that may cause AP include penicillin, ampicillin, erythromycin, and quinine.
Newer penicillins are resistant to stomach acid, such as penicillin V, or have a broader spectrum, such as ampicillin and amoxicillin.
Patients who are severely ill are given ampicillin or a third-generation cephalosporin, such as cefotaxime or ceftriaxone, intravenously.
Patients with Hib strains that are resistant to ampicillin may be given chloramphenicol.
Supportive care also includes monitoring of blood cell counts for patients using chloramphenicol, ampicillin, or other drugs that may affect production of blood cells by the bone marrow.
Tetracycline or ampicillin is often used to treat adults.
These include penicillin, ampicillin, and amoxicillin; sulfisoxazole or sulfamethoxazole; trimethoprim; nitrofurantoin; cephalosporins; or fluoroquinolones.
Using the frozen glycerol stock a 1 liter Terrific Broth + 100 µg/ml ampicillin culture was inoculated.
When symptoms indicate nervous system involvement or a severe episode of Lyme disease, an intravenous antibiotic (ceftriaxone, cefotaxime, ampicillin) may be given for four to six weeks or longer.