التداخل بين أتينولول وكينيدين

Amiodarone is an antiarrhythmic agent with negative chronotropic properties that may be additive to those seen with beta-blockers.

Disopyramide is a Type I antiarrhythmic drug with potent negative inotropic and chronotropic effects.

The effects (if any) of coadministration of other β-blockers on quinidine pharmacokinetics have not been adequately studied.

Coadministration of propranolol usually does not affect quinidine pharmacokinetics, but in some studies the β-blocker appeared to cause increases in the peak serum levels of quinidine, decreases in quinidine's volume of distribution, and decreases in total quinidine clearance.