Lacosamide is an antiepileptic drug that is used to control seizures in people with epilepsy. According to the provided sources, there is no direct evidence of interactions between lacosamide and heart medications. However, it is important to note that lacosamide can cause certain side effects that may affect the heart.

According to the Mayo Clinic [3], lacosamide may cause changes in heart rhythm, which could lead to serious cardiac events. Therefore, patients with pre-existing heart conditions should use lacosamide with caution. Additionally, the drug should be discontinued immediately if a patient experiences symptoms such as fainting, dizziness, or irregular heartbeat.

While there is no direct evidence of interactions between lacosamide and heart medications, it is important for patients to inform their healthcare providers of all medications they are taking, including over-the-counter drugs and supplements. This is because some medications may affect the way lacosamide is metabolized in the body, which could increase the risk of side effects.

In conclusion, lacosamide may cause changes in heart rhythm, but there is no direct evidence of interactions between lacosamide and heart medications. Patients should use lacosamide with caution if they have pre-existing heart conditions, and should inform their healthcare providers of all medications they are taking. If a patient experiences symptoms such as fainting, dizziness, or irregular heartbeat, they should discontinue lacosamide immediately and seek medical attention.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LACOSAMIDE
[2] https://www.epilepsy.com/medications/lacosamide
[3] https://www.mayoclinic.org/drugs-supplements/lacosamide-oral-route/side-effects/drg-20072409?p=1