Can you take RadiaGuard with Tocainide?
1 drug interaction and 12 additional warnings found for the following 2 drugs:
- RadiaGuard (lidocaine topical)
- tocainide
Drug interactions
Moderate drug interactions
Moderate:
tocainide lidocaine topical
Applies to: tocainide and RadiaGuard (lidocaine topical)
Some of the medication in lidocaine topical may be absorbed into the bloodstream following local application. Using lidocaine topical together with tocainide may increase the risk of side effects of both drugs. Although serious side effects are not very common with topically applied medications because only limited amounts of the medication generally get absorbed into the bloodstream from the skin, they can sometimes occur. Contact your doctor if your condition changes or you experience chest pain, palpitations, nausea, vomiting, lightheadedness, nervousness, dizziness or tremors. You may need more frequent monitoring to safely use both medications. Talk to your doctor if you have any questions or concerns. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Food/lifestyle interactions
Minor food/lifestyle interactions
Minor:
lidocaine topical Food/Lifestyle
Applies to: RadiaGuard (lidocaine topical)
Information for this minor interaction is available on the professional version.
Disease interactions
11 potential interactions Applies to: 11 conditions, including Heart Failure, Seizures, Hypokalemia, Hypotension, and Hyperkalemia.
Heart Block
Major:
RadiaGuard
The lidocaine topical in RadiaGuard has a major potential interaction with Heart Block.
Lidocaine is absorbed through intact skin and mucosal membranes following topical administration. Prolonged exposure, large doses, frequent applications and/or use on compromised skin or mucosa can produce systemic effects. At high plasma levels, lidocaine can cause hypotension, bradycardia, and cardiovascular collapse. Therapy with lidocaine topical should be administered cautiously in patients with shock, sinus bradyarrhythmia, or severe heart block. The recommended dosage should not be exceeded. Children and debilitated, elderly, or acutely ill patients should be given reduced dosages commensurate with their age, weight, and physical condition.
Heart Failure
Major:
tocainide
Tocainide has a major potential interaction with Heart Failure.
Antiarrhythmic agents can induce severe hypotension (particularly with IV administration) or induce or worsen congestive heart failure (CHF). Patients with primary cardiomyopathy or inadequately compensated CHF are at increased risk. Antiarrhythmic agents should be administered cautiously and dosage and/or frequency of administration modified in patients with hypotension or adequately compensated CHF. Alternative therapy should be considered unless these conditions are secondary to cardiac arrhythmia.
Hyperkalemia
Moderate:
tocainide
Tocainide has a moderate potential interaction with Hyperkalemia.
Electrolyte imbalance can alter the therapeutic effectiveness of antiarrhythmic agents. Hypokalemia and hypomagnesemia can reduce the effectiveness of antiarrhythmic agents. In some cases, these disorders can exaggerate the degree of QTc prolongation and increase the potential for torsade de pointes. Hyperkalemia can potentiate the toxic effects of antiarrhythmic agents. Electrolyte imbalance should be corrected prior to initiating antiarrhythmic therapy. Clinical monitoring of cardiac function and electrolyte concentrations is recommended.
Hypokalemia
Moderate:
tocainide
Tocainide has a moderate potential interaction with Hypokalemia.
Electrolyte imbalance can alter the therapeutic effectiveness of antiarrhythmic agents. Hypokalemia and hypomagnesemia can reduce the effectiveness of antiarrhythmic agents. In some cases, these disorders can exaggerate the degree of QTc prolongation and increase the potential for torsade de pointes. Hyperkalemia can potentiate the toxic effects of antiarrhythmic agents. Electrolyte imbalance should be corrected prior to initiating antiarrhythmic therapy. Clinical monitoring of cardiac function and electrolyte concentrations is recommended.
Hypotension
Major:
tocainide
Tocainide has a major potential interaction with Hypotension.
Antiarrhythmic agents can induce severe hypotension (particularly with IV administration) or induce or worsen congestive heart failure (CHF). Patients with primary cardiomyopathy or inadequately compensated CHF are at increased risk. Antiarrhythmic agents should be administered cautiously and dosage and/or frequency of administration modified in patients with hypotension or adequately compensated CHF. Alternative therapy should be considered unless these conditions are secondary to cardiac arrhythmia.
Liver Disease
Major:
RadiaGuard
The lidocaine topical in RadiaGuard has a major potential interaction with Liver Disease.
Lidocaine topical is absorbed through intact skin and mucosal membranes. Prolonged exposure, large doses, and/or application to compromised skin or mucosa can result in elevated plasma concentrations of lidocaine. Lidocaine is rapidly and extensively metabolized by the liver. Less than 10% is eliminated unchanged in the urine. Several inactive and two active forms (MEGX and GX) have been identified. MEGX and GX exhibit antiarrhythmic and convulsant properties. The pharmacokinetic disposition of lidocaine is altered by changes in hepatic function, including hepatic blood flow. Therapy with lidocaine topical should be administered cautiously and dosing modified for patients with compromised hepatic function.
Magnesium Imbalance
Moderate:
tocainide
Tocainide has a moderate potential interaction with Magnesium Imbalance.
Electrolyte imbalance can alter the therapeutic effectiveness of antiarrhythmic agents. Hypokalemia and hypomagnesemia can reduce the effectiveness of antiarrhythmic agents. In some cases, these disorders can exaggerate the degree of QTc prolongation and increase the potential for torsade de pointes. Hyperkalemia can potentiate the toxic effects of antiarrhythmic agents. Electrolyte imbalance should be corrected prior to initiating antiarrhythmic therapy. Clinical monitoring of cardiac function and electrolyte concentrations is recommended.
Renal Dysfunction
Major:
RadiaGuard
The lidocaine topical in RadiaGuard has a major potential interaction with Renal Dysfunction.
Lidocaine topical is absorbed through intact skin and mucosal membranes. Prolonged exposure, large doses, and/or application to compromised skin or mucosa can result in elevated plasma concentrations of lidocaine. Lidocaine is primarily eliminated by the kidney. Less than 10% is eliminated unchanged in the urine. Two active metabolites (MEGX and GX) have been identified that exhibit antiarrhythmic and convulsant properties. Serum concentrations of lidocaine and the active metabolites are increased and the half-life prolonged in patients with renal impairment. Therapy with lidocaine topical should be administered cautiously and dosing modified for repeated doses in patients with compromised renal function.
Seizures
Major:
RadiaGuard
The lidocaine topical in RadiaGuard has a major potential interaction with Seizures.
Lidocaine topical is absorbed through intact skin and mucosal membranes. Prolonged exposure, large doses, and/or application to compromised skin or mucosa can result in elevated plasma concentrations of lidocaine. Seizures can occur as a result of accumulation of active metabolites. Therapy with lidocaine topical should be administered cautiously to patients with or predisposed to seizure disorders.
Shock
Major:
RadiaGuard
The lidocaine topical in RadiaGuard has a major potential interaction with Shock.
Lidocaine is absorbed through intact skin and mucosal membranes following topical administration. Prolonged exposure, large doses, frequent applications and/or use on compromised skin or mucosa can produce systemic effects. At high plasma levels, lidocaine can cause hypotension, bradycardia, and cardiovascular collapse. Therapy with lidocaine topical should be administered cautiously in patients with shock, sinus bradyarrhythmia, or severe heart block. The recommended dosage should not be exceeded. Children and debilitated, elderly, or acutely ill patients should be given reduced dosages commensurate with their age, weight, and physical condition.
Teething Syndrome
Major:
RadiaGuard
The lidocaine topical in RadiaGuard has a major potential interaction with Teething Syndrome.
Topical lidocaine is not recommended to be used in teething infants and young children, as its ingestion is dangerous and potentially fatal. Ingestion of the drug has shown to result in seizures, severe brain injury, and heart problems in children.
More resources
RadiaGuard
A total of 121 drugs are known to interact with RadiaGuard.
- Radiaguard is in the drug class topical anesthetics.
- Radiaguard is used to treat the following conditions:
tocainide
A total of 61 drugs are known to interact with tocainide.
- Tocainide is in the drug class group I antiarrhythmics.
- Tocainide is used to treat the following conditions:
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| 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. | |
| No interaction information available. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.