Drug Interactions between digitoxin and Myfedrine
This report displays the potential drug interactions for the following 2 drugs:
- digitoxin
- Myfedrine (pseudoephedrine)
Interactions between your drugs
digitoxin pseudoephedrine
Applies to: digitoxin and Myfedrine (pseudoephedrine)
MONITOR: The concomitant use of sympathomimetic agents and cardiac glycosides may increase the risk of cardiac arrhythmias. The mechanism of this interaction is not known. Increased ectopic pacemaker activity has been reported to occur in patients taking digoxin in combination with pseudoephedrine.
MANAGEMENT: Caution should be exercised if these two drugs are coadministered. Electrocardiogram monitoring (ECG) is recommended. The use of epinephrine (adrenaline) with high doses of digitalis glycosides is not recommended.
References
- (2001) "Product Information. Isuprel (isoproterenol)." Sanofi Winthrop Pharmaceuticals
- (2001) "Product Information. Lanoxin (digoxin)." Glaxo Wellcome
- (2022) "Product Information. EPINEPHrine Hydrochloride (EPINEPHrine)." Abbott Pharmaceutical
- (2001) "Product Information. Claritin-D (loratadine-pseudoephedrine)." Schering-Plough
- (2001) "Product Information. Allegra-D (fexofenadine-pseudoephedrine)." Chattem Consumer Products
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- Cerner Multum, Inc. "Australian Product Information."
Drug and food interactions
pseudoephedrine food
Applies to: Myfedrine (pseudoephedrine)
MONITOR: Coadministration of two or more sympathomimetic agents may increase the risk of adverse effects such as nervousness, irritability, and increased heart rate. Central nervous system (CNS) stimulants, particularly amphetamines, can potentiate the adrenergic response to vasopressors and other sympathomimetic agents. Additive increases in blood pressure and heart rate may occur due to enhanced peripheral sympathetic activity.
MANAGEMENT: Caution is advised if two or more sympathomimetic agents are coadministered. Pulse and blood pressure should be closely monitored.
References
- Rosenblatt JE, Lake CR, van Kammen DP, Ziegler MG, Bunney WE Jr (1979) "Interactions of amphetamine, pimozide, and lithium on plasma norepineophrine and dopamine-beta-hydroxylase in schizophrenic patients." Psychiatry Res, 1, p. 45-52
- Cavanaugh JH, Griffith JD, Oates JA (1970) "Effect of amphetamine on the pressor response to tyramine: formation of p-hydroxynorephedrine from amphetamine in man." Clin Pharmacol Ther, 11, p. 656
- (2001) "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc
- (2001) "Product Information. Tenuate (diethylpropion)." Aventis Pharmaceuticals
- (2001) "Product Information. Sanorex (mazindol)." Novartis Pharmaceuticals
- (2001) "Product Information. Focalin (dexmethylphenidate)." Mikart Inc
- (2002) "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company
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.
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.
Check Interactions
To view an interaction report containing 4 (or more) medications, please sign in or create an account.
Save Interactions List
Sign in to your account to save this drug interaction list.