Pregnancy Rating: Category C,<unk>  crosses the placenta and can cause adverse fetal effects such as heart block, hypotension, and bradycardia
Lactation risk: Present in breast milk with relative infant dose of <1% which is considered safe for the infant.
Renal dosing: Can accumulate causing increased effects, monitor closely and consider lowering dose.
Hepatic dosing: 20-50% of normal dose
Verapamil
Amiodarone
Propafenone
Flecainide
Sotalol
Procainamide
Ibutilide
Encainide