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Moxatag (Amoxicillin) - Drug Interactions, Contraindications, Overdosage, etc

 
 



DRUG INTERACTIONS

Probenecid

      Probenecid decreases the renal tubular secretion of amoxicillin. Concurrent use of MOXATAG and probenecid may result in increased and prolonged blood levels of amoxicillin. The clinical relevance of this finding has not been evaluated.

Other Antibiotics

      Chloramphenicol, macrolides, sulfonamides, and tetracyclines may interfere with the bactericidal effects of penicillin. This has been demonstrated in vitro; however, the clinical significance of this interaction is not well documented.

Oral Contraceptives

      As with other antibiotics, amoxicillin may affect the gut flora, leading to lower estrogen reabsorption and potentially resulting in reduced efficacy of combined oral estrogen/progesterone contraceptives.

OVERDOSAGE

      In case of overdose, discontinue medication, treat symptomatically, and institute supportive measures as required. If the overdose is very recent and there is no contraindication, an attempt at emesis or other means of removal of drug from the stomach may be performed. A prospective study of 51 pediatric patients at a poison-control center suggested that overdosages of less than 250 mg/kg of amoxicillin are not associated with significant clinical symptoms and do not require gastric emptying.

      Interstitial nephritis resulting in oliguric renal failure has been reported in a small number of patients after overdosage with amoxicillin.

      Crystalluria, in some cases leading to renal failure, has also been reported after amoxicillin overdosage in adult and pediatric patients. In case of overdosage, adequate fluid intake and diuresis should be maintained to reduce the risk of amoxicillin crystalluria.

      Renal impairment appears to be reversible with cessation of drug administration. High blood levels may occur more readily in patients with impaired renal function because of decreased renal clearance of amoxicillin. Amoxicillin may be removed from circulation by hemodialysis.

      For additional information about overdose treatment, call a poison control center (1-800-222-1222).

     

     

CONTRAINDICATIONS

      MOXATAG is contraindicated in patients with known serious hypersensitivity to amoxicillin or to other drugs in the same class or patients who have demonstrated anaphylactic reactions to beta-lactams.  

REFERENCES

1. Clinical and Laboratory Standards Institute (CLSI). Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria That Grow Aerobically; Approved Standard - 7th ed Clinical and Laboratory Standards Institute document M7-A7. Clinical and Laboratory Standards Institute, 940 West Valley Road, Suite 1400, Wayne, PA 19087-1898 USA, 2006.

2. CLSI. Performance Standards for Antimicrobial Susceptibility Testing; 17th Informational Supplement. CLSI document M100-S17 CLSI, Wayne, PA 19087-1898, 2007.

3. CLSI. Performance Standards for Antimicrobial Disk Susceptibility Tests; Approved Standard - 9th ed. CLSI document M2-A9 CLSI, Wayne, PA 19087-1898 2006.

     

HOW SUPPLIED/STORAGE AND HANDLING

      MOXATAG tablets for oral administration are provided as blue film-coated, oval-shaped tablets that contain 775 mg of amoxicillin as the trihydrate. The tablets are printed with “MB-111” on one side in black edible ink. MOXATAG is packaged in bottles as follows:

Bottles of 30             NDC 59630-142-03

      Storage

      Store at 25º C (77º F); excursions permitted to 15º–30º C (59º–86º F) [See USP Controlled Room Temperature.]

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