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Ultramox (Augmentin)

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Ultramox is a penicillin antibiotic with a notably broad spectrum of activity. The bi-layer tablets provide an immediate release of amoxicillin and clavulanate potassium and an extended release of amoxicillin. This enhanced formulation prolongs the time that bacteria are exposed to the antibiotic and promotes coverage of tough-to-treat S. pneumoniae.

Other names for this medication:
Aclav, Alfoxil, Alphamox, Amimox, Amixen, Amobay, Amobiotic, Amocla, Amoclan, Amoclane, Amodex, Amoklavin, Amoksiklav, Amolin, Amorion, Amotaks, Amoval, Amoxal, Amoxan, Amoxibeta, Amoxicap, Amoxiclav, Amoxidal, Amoxidin, Amoxiduo, Amoxihexal, Amoxiplus, Amoxival, Amoxsan, Amoxy, Amoxydar, Ampliron, Amylin, Atoksilin, Augmaxcil, Augmentin, Augmex, Augpen, Bactoclav, Betamox, Bioclavid, Biomox, Blumox, Cavumox, Cilamox, Clabat, Clamentin, Clamicil, Clamovid, Clamoxin, Claneksi, Clavam, Clavamel, Clavamox, Clavaseptin, Clavet, Clavinex, Clavipen, Clavobay, Clavubactin, Clavucid, Clavulin, Clavulox, Clavumox, Clonamox, Curam, Dexyclav, Dimopen, Duomox, Enhancin, Exten, Fleming, Fulgram, Germentin, Gimaclav, Gloclav, Glomox, Grinsil, Hiconcil, Himox, Homer, Hymox, Imadrax, Julmentin, Julphamox, Kesium, Klamoks, Klavox, Klavunat, Largopen, Macropen, Maxamox, Medoclav, Megamox, Megapen, Moxacil, Moxatag, Moxiclav, Moxilen, Moxilin, Moxypen, Myclav, Mymox, Natravox, Neomox, Nisamox, Noprilam, Noroclav, Novaclav, Novamox, Novax, Novocilin, Optamox, Oramox, Origin, Panklav, Pediamox, Pinamox, Ranclav, Ranmoxy, Ranoxyl, Rapiclav, Ronemox, Sulbacin, Suprapen, Synulox, Topcillin, Trifamox, Unimox, Vetrimoxin, Xiclav, Zoxil

Similar Products:
Amoxil, Cipro, Bactrim, Ampicillin, Trimox


Also known as:  Augmentin.


Ultramox is a brand name for an antibiotic, called co-amoxiclav, that is used to treat a wide range of conditions, from bronchitis to Lyme disease. It is one of the most commonly prescribed antibiotics for children, frequently dispensed for ear infections.

The drug is a combination of two active ingredients: amoxicillin and clavulanic acid. Together, the drugs fight bacteria that would ordinarily be resistant to amoxicillin alone.


Ultramox may be taken without regard to meals; however, absorption of clavulanate potassium is enhanced when Ultramox is administered at the start of a meal. To minimize the potential for gastrointestinal intolerance, Ultramox should be taken at the start of a meal.

The usual adult dose is one 500-mg tablet of Ultramox every 12 hours or one 250-mg tablet of Ultramox every 8 hours. For more severe infections and infections of the respiratory tract, the dose should be one 875-mg tablet of Ultramox every 12 hours or one 500-mg tablet of Ultramox every 8 hours. Adults who have difficulty swallowing may be given the 125 mg/5 mL or 250 mg/5 mL suspension in place of the 500-mg tablet. The 200 mg/5 mL suspension or the 400 mg/5 mL suspension may be used in place of the 875-mg tablet.

Two 250-mg tablets of Ultramox should not be substituted for one 500-mg tablet of Ultramox. Since both the 250-mg and 500-mg tablets of Ultramox contain the same amount of clavulanic acid (125 mg, as the potassium salt), two 250-mg tablets are not equivalent to one 500-mg tablet of Ultramox.

The 250-mg tablet of Ultramox and the 250-mg chewable tablet should not be substituted for each other, as they are not interchangeable. The 250-mg tablet of Ultramox and the 250-mg chewable tablet do not contain the same amount of clavulanic acid (as the potassium salt). The 250-mg tablet of Ultramox contains 125 mg of clavulanic acid, whereas the 250-mg chewable tablet contains 62.5 mg of clavulanic acid.


If you take too much this medication, call your healthcare provider or local Poison Control Center, or seek emergency medical attention right away.

If this medication is administered by a healthcare provider in a medical setting, it is unlikely that an overdose will occur. However, if overdose is suspected, seek emergency medical attention.


Store between 20 and 25 degrees C (68 and 77 degrees F) away from moisture and heat. Keep bottle closed tightly. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Ultramox are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Ultramox is contraindicated in patients with a history of serious hypersensitivity reactions (e.g., anaphylaxis or Stevens-Johnson syndrome) to amoxicillin, clavulanate or to other beta lactam antibacterial drugs (e.g., penicillins and cephalosporins).

ultramox medicine

We report a 37-year-old African-American man with systemic lupus erythematosus (SLE) diagnosed in May 2001 when he presented with biopsy-proven nephritis. He had been treated intermittently from May 2001 to November 2004 with intravenously (i.v.) administered cyclophosphamide and high doses of prednisone due to unrelenting proteinuria. In November 2004, he was admitted to the hospital because of deterioration of renal function and massive proteinuria (21 g dl(-1) 24 h(-1)) and treated with pulses of methylprednisolone and two courses of i.v. administered cyclophosphamide. His hospital course was complicated by cellulitis and bacteremia with Pseudomonas spp. and Streptococcus bovis. He was discharged on prednisone 60 mg daily, ciprofloxacin, augmentin, and hemodialysis. He was readmitted a week later with new onset of seizure activity, slurred speech, and left-sided hemiparesis. Magnetic resonance imaging of the brain revealed multiple ringlike enhancing foci in the frontal and occipital lobes. Brain biopsy was performed, and Gram stain and initial cultures were negative. Empiric tobramycin, cefepime, and metronidazole were administered. Diagnosis was delayed for several months, but culture eventually grew Nocardia asteroides. Trimethoprim-sulfomethoxazole and linezolid therapy was begun. This was followed by slow, but steady, clinical improvement. Risk factors, diagnostic clues, and treatment are reviewed.

ultramox dosage

C. jejuni as well as some hippurate-negative Campylobacter species and related diarrheagenic organisms, are the leading cause of gastroenteritis in our environment all throughout the year. The aim of the present study was to determine the sensitivity of hippurate-negative Campylobacter and Helicobacter pullorum strains isolated from the stools of patients with diarrhea. We tested 39 Campylobacter coli, two C. lari and five Helicobacter pullorum strains identified by mass spectrometry analysis. The sensitivity to amoxicillin-clavulanic acid, erytrhomycin, azithromycin, gentamicin, ciprofloxacin, levofloxacin, tetracycline, tigecycline and chloramphenicol was tested by E-test. Most hippurate-negative Campylobacter and H. pullorum isolates studied showed high resistance to tetracycline and to the two fluorquinolones tested. On the other side, all strains were sensitive to amoxicillin-clavulanic acid, tigecycline and chloramphenicol, while most of them were sensitive to both macrolides tested and to gentamicin.

ultramox syrup

University children's hospital allergy and immunology center and radiologic department.

ultramox drug

A total of 43,493 E. coli isolates from 34,539 unique patients were identified for study inclusion. After stratifying by age, E. coli susceptibility to ampicillin, amoxicillin-clavulanate, ciprofloxacin, and nitrofurantoin differed significantly between males and females. However, the magnitude of the differences was less than 10% for all strata except amoxicillin-clavulanate susceptibility in E. coli isolated from males age 18-64 compared to females of the same age.

ultramox tablet

The aim of this study was to determine the susceptibility of Gardnerella vaginalis strains isolated from women with bacterial vaginosis to metronidazole, clindamycin and amoxicillin/clavulanic acid.

ultramox suspension

One hundred seventy-two neonates (median age, 19 days) were included. Of 129 blood cultures carried out, 16 (12.4%) were positive. Analysis of cerebrospinal fluid was performed in 75 patients; none of the cultures was positive. Forty-nine patients (28.5%) were treated with ampicillin and gentamicin and 105 (61%) with amoxicillin-clavulanate and gentamicin. The median length of intravenous treatment was 4 days (P25: 3; P75: 6). Oral amoxicillin-clavulanate was used in the continuation phase in 75%. No treatment failure or relapse was detected. Eleven (8.7%) of 126 patients had renal scarring at 6 months.

ultramox antibiotic

Methodology employed provided useful additional information on ambulatory practice of prescribing antibiotics and could be used in further assessment studies. Educational interventions should be focused on treatment of acute pharyngitis and bronchitis in children and unnecessary use of quinolones in adults for uncomplicated urinary tract infection.

ultramox 500 mg capsules

The growing resistance of Streptococcus pneumoniae to penicillin can be overcome by increasing the dose of the penicillin administered. This generated the recommendation that the adult dose of amoxicillin for the treatment of acute maxillary sinusitis (AMS) be increased from 1.5 g/day to 4.0 g/day. The objective of this study was to investigate whether the higher dose of amoxicillin is more effective than the previously recommended dose in eradicating S. pneumoniae from the nasopharynx of patients who present with AMS. Nasopharyngeal cultures obtained from 58 patients with AMS were studied: 30 received amoxicillin 1.5 g/day given in divided doses three times a day for 10 days (amoxicillin/clavulanic acid 4:1 formulation) and 28 were treated with amoxicillin 4.0 g/day given in divided doses twice a day for 10 days (amoxicillin/clavulanic acid 16:1 formulation). Seventy-one potentially pathogenic organisms were isolated: S. pneumoniae (27 isolates), Haemophilus influenzae non-type b (25), Moraxella catarrhalis (5), Streptococcus pyogenes (5) and Staphylococcus aureus (9). The number of S. pneumoniae isolates in the 1.5 g/day group was reduced from 14 to 9 (2 intermediately resistant and 3 highly resistant). In contrast, the number of S. pneumoniae isolates in the 4.0 g/day group was reduced from 13 to 2 (1 highly resistant) (P<0.05). No differences were noted in the eradication rate of other groups of isolates, which were all susceptible to amoxicillin/clavulanic acid. These data illustrate the superiority of 4.0 g/day amoxicillin/clavulanic acid compared with 1.5 g/day amoxicillin/clavulanic acid in the eradication of S. pneumoniae from the nasopharynx.

ultramox bid suspension

The records of all trauma patients undergoing surgical intervention for retained hemothoraces over the 30-month period January 2001 to June 2003 were reviewed.

ultramox 500 mg

In order to evaluate the clinical efficacy and safety profiles of single-dose ceftriaxone (50 mg/kg, not exceeding 1 g) and a 10-day course of amoxicillin-clavulanate (amoxi-clav) [45 mg/kg/day, in 3 divided doses] in children with acute otitis media (AOM), we conducted a prospective, comparative, randomized trial. Between February 2000 and April 2002, 110 children with a mean age of 30.73 +/- 20.79 months were enrolled. 109 patients were evaluated for the safety assessment. The intent-to treat population included 96 patients who completed at least 3 days of treatment. The standard analysis population included 73 patients who completed the 10-day treatment period without any major violation. For the standard analysis population, 57 out of 73 patients experienced treatment success; 31 out of 41 patients in the ceftriaxone group were cured compared with 25 out of 32 patients in the amoxi-clav group. The rate of persistence of middle-ear fluid did not differ between the 2 groups at day 11 or day 28. A higher treatment preference rate was observed in the ceftriaxone group (93.9% vs 58.6%). The most common drug-related adverse effects were found in the digestive system, skin and appendages in both treatment groups. A single dose of ceftriaxone is as safe and effective as amoxi-clav for curing patients with acute otitis media. In addition, a substantially higher proportion of patients receiving single-dose ceftriaxone showed a preference for the study medication compared with those treated with amoxi-clav for 10 days.

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ultramox medicine 2015-06-03

One hundred sixty-nine children with confirmed Suprax Missed Dose acute bacterial otitis media were randomized to treatment with 10 mg/kg of azithromycin oral suspension on Day 1, followed by 5 mg/kg once daily for the next 4 days or 40 mg/kg/ day of amoxicillin/clavulanate suspension in three divided doses for 10 days. Clinical efficacy and safety were evaluated on Days 11 and 30.

ultramox syrup 2015-02-10

GPs were asked to record data in a patient data collection form for every patient that received antibiotics. Study period - (7 days) one week Amoxicillin Trihydrate 500 Mg Dose in November, 2008. Data recorded included the following details: an antibiotic, the prescribed dose, dosing interval, route of administration combined with the demographic factors of the patient and clinical diagnosis based on a pre-defined list.

ultramox dosage 2016-11-16

Cefaclor and amoxicillin/clavulonate provide a clinically and bacteriologically effective treatment for patients with pharyngotonsillitis caused by GABHS, but cefaclor treatment is significantly safer in Suprax Renal Dosing regard to gastrointestinal side effects.

ultramox tablet 2015-02-17

Since 1978 we have taken an interest in lower respiratory tract infections associated with Branhamella catarrhalis in Christchurch, New Zealand. In a preliminary trial, 20 patients with bronchopulmonary infection caused by beta-lactamase-producing B. catarrhalis were treated with a combination tablet of amoxycillin 500 mg and clavulanic acid 125 mg ('Augmentin') 3 times daily for 5 days. Sputum cultures were negative for B. catarrhalis within 3 days in all patients. Two of 7 patients whose sputum cultures were positive for this organism at a review 2 to 4 weeks later were successfully treated with a further Gimalxina Amoxicillin 500mg Dosage course of amoxycillin/clavulanic acid.

ultramox drug 2017-06-15

A prospective Clamoxyl 750 Mg Prospecto study.

ultramox suspension 2015-08-18

Ninety percent of cases of acute calculous cholecystitis are of mild (grade I) or moderate (grade II) severity. Although the preoperative and intraoperative antibiotic management of acute Ciprofloxacin 500 Mg Urinary Tract calculous cholecystitis has been standardized, few data exist on the utility of postoperative antibiotic treatment.

ultramox antibiotic 2017-11-19

plasmid pB1000 bearing bla(ROB-1) is responsible for high-level β-lactam resistance in Haemophilus influenzae as well as in Pasteurella Clamicil Suspension 250 multocida and Haemophilus parasuis isolates from Spain. Here, we explore the presence of ROB-1 in Italy and investigate the relative contribution of penicillin-binding protein 3 (PBP3) mutations and ROB-1 to the β-lactam resistance phenotype in H. influenzae.

ultramox 500 mg 2017-03-16

Two hundred forty eight forms out of the 600 (41%) were returned by post. Antibiotics were prescribed in 6.4% (1711/26803) of Bactrim Ds Generic outpatient consultations. In total, 1763 antibiotics were prescribed during the study period. Ninety seven percent of the patients received monotherapy and only 47 (2.7%) patients were prescribed two antibiotics. The most commonly prescribed antibiotics were amoxicillin (33.9% of prescribed), amoxicillin/clavulanate (18,7%) and clarithromycin (7.6%). The most commonly treated indications were pharyngitis (29.8%), acute bronchitis (25.3%) and rhinosinusitis (10.2%). Pneumonia was mostly treated with amoxicillin/clavulanate (25,7%), amoxicillin (15.7%) and clarithromycin (19.3%).

ultramox 500 mg capsules 2016-04-01

Ofloxacin exhibit a good activity against the pathogen bacteria of the respiratory tract, except for S. pneumoniae. Its use is interesting because it has a good diffusion into respiratory tissues. However, the combination with an another antibiotic was necessary to spread the activity spectrum and to prevent the resistant variants. By the new killing curve checkerboard method, these 2 combinations are studied against 8 strains: 4 H. influenzae (2 beta-lactamase producers), 2 S. pneumoniae and 2 K. pneumoniae, at 0, 2, 4, 6 and 24 hours, a viable bacteria counting is executed by a microdilution method and is subcultured with a Steers-type multiple inoculator. With K. pneumoniae, ofloxacin has a dose dependent bactericidal activity which is maximum at 1 mg/l, While augmentin has a time-dependent activity. In the combination the synergy is rare. With H. influenzae, the results are the same; the bactericidal activity is less rapid but it is better than the ones with amoxicillin and clavulanic acid. With S. pneumoniae, the 2 antibiotics have the same activity. No antagonism is observed. And the antibiotic which has a better bactericidal activity determine the viable bacteria count.