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Drug Interactions between FIRST Mouthwash BLM and metoclopramide

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

diphenhydrAMINE metoclopramide

Applies to: FIRST Mouthwash BLM (aluminum hydroxide / diphenhydramine / lidocaine / magnesium hydroxide / simethicone topical) and metoclopramide

GENERALLY AVOID: Anticholinergic agents and other agents with significant anticholinergic activity (e.g., clozapine, class IA antiarrhythmics especially disopyramide) may antagonize the pharmacologic effects of gastrointestinal prokinetic agents. Gastrokinetic drugs such as domperidone and metoclopramide increase gastrointestinal motility by blocking peripheral dopamine receptors. Anticholinergic agents could negate this action.

MANAGEMENT: Concomitant use of gastrointestinal prokinetic agents with anticholinergic agents should be avoided, if possible.

References

  1. (2001) "Product Information. Reglan (metoclopramide)." Wyeth-Ayerst Laboratories
  2. (2002) "Product Information. Motilium (domperidone)." Janssen-Ortho Inc

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Moderate

metoclopramide lidocaine topical

Applies to: metoclopramide and FIRST Mouthwash BLM (aluminum hydroxide / diphenhydramine / lidocaine / magnesium hydroxide / simethicone topical)

MONITOR: Some topical anesthetics can be systemically absorbed and cause methemoglobinemia, particularly when applied to mucous membranes. Coadministration with other oxidizing agents that can also induce methemoglobinemia such as injectable local anesthetics, antimalarials (e.g., chloroquine, primaquine, quinine, tafenoquine), nitrates and nitrites, sulfonamides, aminosalicylic acid, dapsone, dimethyl sulfoxide, flutamide, metoclopramide, nitrofurantoin, phenazopyridine, phenobarbital, phenytoin, and rasburicase may increase the risk. Additional risk factors include very young age (e.g., infants less than 6 months); application to inflamed/abraded areas or broken skin; anemia; cardiac or pulmonary disease; peripheral vascular disease; liver cirrhosis; shock; sepsis; acidosis; and genetic predisposition (e.g., NADH cytochrome-b5 reductase deficiency; glucose-6-phosphate dehydrogenase (G6PD) deficiency; hemoglobin M). There have been rare reports of significant methemoglobinemia associated with administration of topical anesthetics, primarily following application to mucous membranes prior to dental procedures or via the oropharyngeal route prior to procedures such as intubation, laryngoscopy, bronchoscopy, and endoscopy. Very rarely, methemoglobinemia has also been reported with use of anesthetic throat lozenges.

MANAGEMENT: Caution is advised when topical anesthetics are used concomitantly with other methemoglobin-inducing agents. Clinicians should be aware of the potential for methemoglobinemia, particularly when topical anesthetics are applied to mucous membranes or given via the oropharyngeal route. Signs and symptoms of methemoglobinemia may be delayed some hours after drug exposure. Patients or their caregivers should be advised to seek medical attention if they notice signs and symptoms of methemoglobinemia such as slate-grey cyanosis in buccal mucous membranes, lips, and nail beds; nausea; headache; dizziness; lightheadedness; lethargy; fatigue; dyspnea; tachypnea; tachycardia; palpitation; anxiety; and confusion. In severe cases, patients may progress to central nervous system depression, stupor, seizures, acidosis, cardiac arrhythmias, syncope, shock, coma, and death. Methemoglobinemia should be considered if central cyanosis is unresponsive to oxygen. Calculated oxygen saturation and pulse oximetry are generally not accurate in the setting of methemoglobinemia. The diagnosis can be confirmed by an elevated methemoglobin level of at least 10% using co-oximetry. Methemoglobin concentrations greater than 10% of total hemoglobin will typically cause cyanosis, and levels over 70% are frequently fatal. However, symptom severity is not always related to methemoglobin levels. Experts suggest that treatment of methemoglobinemia varies from supplemental oxygen and symptom support to the administration of methylene blue, depending on severity of symptoms and/or the presence of G6PD deficiency. Institutional guidelines and/or individual product labeling should be consulted for further guidance.

References

  1. Karim A, Ahmed S, Siddiqui R, Mattana J (2001) "Methemoglobinemia complicating topical lidocaine used during endoscopic procedures." Am J Med, 111, p. 150-3
  2. (2005) "Product Information. Hurricaine (benzocaine topical)." Beutlich
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  4. Cerner Multum, Inc. "Australian Product Information."
  5. Guay J (2009) "Methemoglobinemia related to local anesthetics: a summary of 242 episodes." Anesth Analg, 108, p. 837-45
  6. Skold A, Cosco DL, Klein R (2011) "Methemoglobinemia: pathogenesis, diagnosis, and management." South Med J, 104, p. 757-61
  7. (2020) "Product Information. Chloraseptic (benzocaine-menthol topical)." Prestige Brands (formerly MedTech)
View all 7 references

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Drug and food interactions

Major

aluminum hydroxide food

Applies to: FIRST Mouthwash BLM (aluminum hydroxide / diphenhydramine / lidocaine / magnesium hydroxide / simethicone topical)

GENERALLY AVOID: The concomitant administration of aluminum-containing products (e.g., antacids and phosphate binders) and citrates may significantly increase serum aluminum concentrations, resulting in toxicity. Citrates or citric acid are contained in numerous soft drinks, citrus fruits, juices, and effervescent and dispersible drug formulations. Citrates enhance the gastrointestinal absorption of aluminum by an unknown mechanism, which may involve the formation of a soluble aluminum-citrate complex. Various studies have reported that citrate increases aluminum absorption by 4.6- to 50-fold in healthy subjects. Patients with renal insufficiency are particularly at risk of developing hyperaluminemia and encephalopathy. Fatalities have been reported. Patients with renal failure or on hemodialysis may also be at risk from soft drinks and effervescent and dispersible drug formulations that contain citrates or citric acid. It is unknown what effect citrus fruits or juices would have on aluminum absorption in healthy patients.

MANAGEMENT: The concomitant use of aluminum- and citrate-containing products and foods should be avoided by renally impaired patients. Hemodialysis patients should especially be cautioned about effervescent and dispersible over-the-counter remedies and soft drinks. Some experts also recommend that healthy patients should separate doses of aluminum-containing antacids and citrates by 2 to 3 hours.

ADJUST DOSING INTERVAL: The administration of aluminum-containing antacids with enteral nutrition may result in precipitation, formation of bezoars, and obstruction of feeding tubes. The proposed mechanism is the formation of an insoluble complex between the aluminum and the protein in the enteral feeding. Several cases of esophageal plugs and nasogastric tube obstructions have been reported in patients receiving high-protein liquids and an aluminum hydroxide-magnesium hydroxide antacid or an aluminum hydroxide antacid.

MANAGEMENT: Some experts recommend that antacids should not be mixed with or given after high protein formulations, that the antacid dose should be separated from the feeding by as much as possible, and that the tube should be thoroughly flushed before administration.

References

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  2. Wohlt PD, Zheng L, Gunderson S, Balzar SA, Johnson BD, Fish JT (2009) "Recommendations for the use of medications with continuous enteral nutrition." Am J Health Syst Pharm, 66, p. 1438-67

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Moderate

metoclopramide food

Applies to: metoclopramide

GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.

MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.

References

  1. Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
  2. Gilman AG, eds., Nies AS, Rall TW, Taylor P (1990) "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc.
  3. (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
  4. (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc
View all 4 references

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Moderate

diphenhydrAMINE food

Applies to: FIRST Mouthwash BLM (aluminum hydroxide / diphenhydramine / lidocaine / magnesium hydroxide / simethicone topical)

GENERALLY AVOID: Use of anticholinergic agents with alcohol may result in sufficient impairment of attention so as to render driving and operating machinery more hazardous. In addition, the potential for abuse may be increased with the combination. The mechanism of interaction is not established but may involve additive depressant effects on the central nervous system. No effect of oral propantheline or atropine on blood alcohol levels was observed in healthy volunteers when administered before ingestion of a standard ethanol load. However, one study found impairment of attention in subjects given atropine 0.5 mg or glycopyrrolate 1 mg in combination with alcohol.

MANAGEMENT: Alcohol should generally be avoided during therapy with anticholinergic agents. Patients should be counseled to avoid activities requiring mental alertness until they know how these agents affect them.

References

  1. Linnoila M (1973) "Drug effects on psychomotor skills related to driving: interaction of atropine, glycopyrrhonium and alcohol." Eur J Clin Pharmacol, 6, p. 107-12

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.


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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
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 interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.