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Tequin Teqpaq (gatifloxacin) Disease Interactions

There are 8 disease interactions with Tequin Teqpaq (gatifloxacin):


Gatifloxacin (Includes Tequin Teqpaq) ↔ Dysglycemia

Severe Potential Hazard, High plausibility

Applies to: Renal Dysfunction, Diabetes Mellitus

The use of gatifloxacin is contraindicated in patients with diabetes mellitus. Treatment with various quinolones has been associated with disturbances in blood glucose homeostasis possibly stemming from effects on pancreatic beta cell ATP-sensitive potassium channels that regulate insulin secretion. However, dysglycemia has been reported more frequently with gatifloxacin than with other quinolones. Although typically reported in diabetic patients, hypoglycemia and particularly hyperglycemia have occurred in patients without a history of diabetes. Gatifloxacin-induced hypoglycemic episodes have generally occurred within the first 3 days of therapy and sometimes even after the first dose, while hyperglycemia usually occurred 4 to 10 days after initiation of therapy. Serious cases have resulted in hyperosmolar nonketotic hyperglycemic coma, diabetic ketoacidosis, hypoglycemic coma, convulsions, and mental status changes. Rarely, death has been reported. In addition to diabetes, other risk factors associated with dysglycemia while taking gatifloxacin include older age, renal insufficiency, and concomitant glucose-altering mediations. Patients with these risk factors should be closely monitored for glucose disturbances. Dosage adjustments may be necessary, particularly in elderly patients who may have unrecognized diabetes, age-related decrease in renal function, and/or other underlying medical problems. The manufacturer recommends a dosage reduction to 200 mg/daily after an initial dose of 400 mg in patients with creatinine clearance below 40 mL/min. Patients should be counseled to recognize symptoms of hypoglycemia such as headache, dizziness, drowsiness, nausea, tremor, weakness, hunger, excessive perspiration, and palpitations. If hypo- or hyperglycemia occur during therapy, patients should initiate appropriate remedial therapy immediately, discontinue the antibiotic, and contact their physician.


  1. Kanbay M, Aydogan T, Bozalan R, et al. "A rare but serious side effect of levofloxacin: hypoglycemia in a geriatric patient." Diabetes Care 29 (2006): 1716-7
  2. "Product Information. Tequin (gatifloxacin)" Bristol-Myers Squibb, Princeton, NJ.
  3. Baker SE, Hangii MC "Possible gatifloxacin-induced hypoglycemia." Ann Pharmacother 36 (2002): 1722-6
View all 16 references

Quinolones (Includes Tequin Teqpaq) ↔ Cns Disorders

Severe Potential Hazard, Moderate plausibility

Applies to: CNS Disorder

Quinolones may cause CNS stimulation manifested as tremors, agitation, restlessness, anxiety, confusion, hallucinations, paranoia, insomnia, toxic psychosis, and/or seizures. Benign intracranial hypertension has also been reported. Therapy with quinolones should be administered cautiously in patients with or predisposed to seizures or other CNS abnormalities. In addition, these patients should be advised to avoid the consumption of caffeine-containing products during therapy with some quinolones, most notably ciprofloxacin, enoxacin, and cinoxacin, since these agents can substantially reduce the clearance of caffeine and other methylxanthines, potentially resulting in severe CNS reactions.


  1. Schwartz MT, Calvert JF "Potential neurologic toxicity related to ciprofloxacin." Ann Pharmacother 24 (1990): 138-40
  2. Traeger SM, Bonfiglio MF, Wilson JA, Martin BR, Nackes NA "Seizures associated with ofloxacin therapy." Clin Infect Dis 21 (1995): 1504-6
  3. Arcieri G, Griffith E, Gruenwaldt G, et al "A survey of clinical experience with ciprofloxacin, a new quinolone antimicrobial." J Clin Pharmacol 28 (1988): 179-89
View all 57 references

Quinolones (Includes Tequin Teqpaq) ↔ Myasthenia Gravis

Severe Potential Hazard, Moderate plausibility

Applies to: Myasthenia Gravis

Fluoroquinolones have neuromuscular blocking activity and may exacerbate muscle weakness in persons with myasthenia gravis. Postmarketing serious adverse events, including deaths and requirement for ventilatory support, have been associated with fluoroquinolones use in persons with myasthenia gravis. Fluoroquinolones should be avoided in patients with history of myasthenia gravis.


Quinolones (Includes Tequin Teqpaq) ↔ Qt Interval Prolongation

Severe Potential Hazard, Moderate plausibility

Applies to: Abnormal Electrocardiogram, Arrhythmias, Electrolyte Abnormalities, Hypokalemia, Ischemic Heart Disease, Magnesium Imbalance, Congestive Heart Failure

Quinolones have been reported to prolong the QT interval of the electrocardiogram in some patients. QT prolongation may potentiate the risk of ventricular arrhythmias including ventricular tachycardia, ventricular fibrillation, and torsade de pointes. The risk appears to be greatest with grepafloxacin and sparfloxacin (both are no longer marketed in the U.S.), although cardiovascular morbidity and mortality attributable to QT prolongation have also been reported rarely with others like gatifloxacin, levofloxacin, ciprofloxacin, and ofloxacin. Reported cases have primarily occurred in patients with advanced age, cardiac disease, electrolyte disturbances, and/or underlying medical problems for which they were receiving concomitant medications known to prolong the QT interval. Therapy with quinolones should be avoided in patients with known QT prolongation and/or uncorrected electrolyte disorders (hypokalemia or hypomagnesemia) and in patients treated concomitantly with class IA or III antiarrhythmic agents. Cautious use with ECG monitoring is advised in patients with other proarrhythmic conditions such as clinically significant bradycardia, congestive heart failure, acute myocardial ischemia, and atrial fibrillation. As QT prolongation may be a concentration-dependent effect, it is important that the recommended dosages or infusion rates of these drugs not be exceeded, particularly in patients with renal and/or hepatic impairment.


  1. "Product Information. Levaquin (levofloxacin)." Ortho Pharmaceutical Corporation, Raritan, NJ.
  2. Iannini PB "Cardiotoxicity of macrolides, ketolides and fluoroquinolones that prolong the QTc interval." Expert Opin Drug Saf 1 (2002): 121-8
  3. Demolis JL, Kubitza D, Tenneze L, Funck-Bretano C "Effect of a single oral dose of moxifloxacin (400 mg and 800 mg) on ventricular repolarization in healthy subjects." Clin Pharmacol Ther 68 (2000): 658-66
View all 29 references

Quinolones (Includes Tequin Teqpaq) ↔ Tendonitis

Severe Potential Hazard, Moderate plausibility

Applies to: Tendonitis

Tendonitis and ruptures of the shoulder, hand, and Achilles tendons have been reported in patients receiving quinolones, both during and after treatment. Therapy with quinolones should be administered cautiously in patients with preexisting tendonitis, since it may delay the recognition or confound the diagnosis of a quinolone-induced musculoskeletal effect. It is recommended to discontinue these agents if, at any time during therapy, pain, inflammation or rupture of a tendon develop and institute appropriate therapy.


  1. "Product Information. Penetrex (enoxacin)." Rhone-Poulenc Rorer, Collegeville, PA.
  2. "Product Information. Factive (gemifloxacin)." GeneSoft Inc, San Francisco, CA.
  3. "Product Information. Zagam (sparfloxacin)." Rhone-Poulenc Rorer, Collegeville, PA.
View all 18 references

Antibiotics (Includes Tequin Teqpaq) ↔ Colitis

Moderate Potential Hazard, Moderate plausibility

Applies to: Colitis/Enteritis (Noninfectious)

Pseudomembranous colitis has been reported with most antibacterial agents and may range in severity from mild to life-threatening, with an onset of up to two months following cessation of therapy. Antibiotic therapy can alter the normal flora of the colon and permit overgrowth of Clostridium difficile, whose toxin is believed to be a primary cause of antibiotic- associated colitis. The colitis is usually characterized by severe, persistent diarrhea and severe abdominal cramps, and may be associated with the passage of blood and mucus. The most common culprits are clindamycin, lincomycin, the aminopenicillins (amoxicillin, ampicillin), and the cephalosporins. Therapy with broad-spectrum antibiotics and other agents with significant antibacterial activity should be administered cautiously in patients with a history of gastrointestinal diseases, particularly colitis. There is some evidence that pseudomembranous colitis, if it occurs, may run a more severe course in these patients and that it may be associated with flares in their underlying disease activity. The offending antibiotic(s) should be discontinued if significant diarrhea occurs during therapy. Stool cultures for Clostridium difficile and stool assay for C. difficile toxin may be helpful diagnostically. A large bowel endoscopy may be considered to establish a definitive diagnosis in cases of severe diarrhea.


  1. Moriarty HJ, Scobie BA "Pseudomembranous colitis in a patient on rifampicin and ethambutol." N Z Med J 04/23/80 (1980): 294-5
  2. Thomas E, Mehta JB "Pseudomembranous colitis due to oxacillin therapy." South Med J 77 (1984): 532-3
  3. Harmon T, Burkhart G, Applebaum H "Perforated pseudomembranous colitis in the breast-fed infant." J Pediatr Surg 27 (1992): 744-6
View all 47 references

Quinolones (Includes Tequin Teqpaq) ↔ Crystalluria

Moderate Potential Hazard, Moderate plausibility

Applies to: Dehydration, Diarrhea, Vomiting

Crystalluria has been reported rarely during quinolone therapy. Although it is not expected to occur under normal circumstances with usual recommended dosages, patients who are dehydrated (e.g., due to severe diarrhea or vomiting) may be at increased risk and should be encouraged to consume additional amounts of liquid or given intravenous fluid to ensure an adequate urinary output. Alkalinity of the urine should be avoided, since it may also increase the risk of crystalluria. Renal function tests should be performed periodically during prolonged therapy (> 2 weeks).


  1. "Product Information. Trovan (trovafloxacin)." Pfizer US Pharmaceuticals, New York, NY.
  2. "Product Information. NegGram (nalidixic acid)." Sanofi Winthrop Pharmaceuticals, New York, NY.
  3. "Product Information. Penetrex (enoxacin)." Rhone-Poulenc Rorer, Collegeville, PA.
View all 16 references

Quinolones (Includes Tequin Teqpaq) ↔ Hemodialysis

Moderate Potential Hazard, High plausibility

Applies to: hemodialysis

The following quinolones are known to be partially removed by hemodialysis and should be administered after dialysis: ciprofloxacin, enoxacin, gatifloxacin, levofloxacin, lomefloxacin, and ofloxacin.


  1. Singlas E, Taburet AM, Landru I, Albin H, Ryckelinck JP "Pharmacokinetics of ciprofloxacin tablets in renal failure: infuluence of haemodialysis." Eur J Clin Pharmacol 31 (1987): 389-93
  2. Thalhammer F, Kletzmayr J, ElMenyawi I, Kovarik J, Rosenkranz AR, Traunmuller F, Horl WH, Burgmann H "Ofloxacin clearance during hemodialysis: A comparison of polysulfone and cellulose acetate hemodialyzers." Am J Kidney Dis 32 (1998): 642-5
  3. "Product Information. Tequin (gatifloxacin)" Bristol-Myers Squibb, Princeton, NJ.
View all 13 references

Tequin Teqpaq (gatifloxacin) drug Interactions

There are 618 drug interactions with Tequin Teqpaq (gatifloxacin)

Tequin Teqpaq (gatifloxacin) alcohol/food Interactions

There are 2 alcohol/food interactions with Tequin Teqpaq (gatifloxacin)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

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