How does lacosamide interact with other medications?

How does lacosamide interact with other anti-seizure drugs?
Lacosamide can raise levels of carbamazepine or phenytoin when taken together, increasing side-effect risks such as dizziness or double vision. Dose adjustments or blood-level checks are often needed.

What about heart-rhythm medicines?
Combining lacosamide with drugs that prolong the PR interval, such as beta-blockers, calcium-channel blockers, or certain anti-arrhythmics, may slow heart conduction. ECG monitoring is recommended at the start of therapy.

Does lacosamide affect hormonal contraceptives?
Current data show no clinically significant interaction with oral contraceptives, so backup birth-control measures are not required for this reason alone.

Can alcohol or sedatives increase lacosamide side effects?
Alcohol, benzodiazepines, and other central-nervous-system depressants add to lacosamide’s dizziness and drowsiness. Patients are usually advised to limit alcohol and to use extra caution when driving.

When should a doctor review a full medication list?
Before starting lacosamide, and at every dose change, clinicians review all prescriptions, over-the-counter products, and supplements because even seemingly unrelated drugs can alter heart rhythm or seizure control.

Sources
[1] https://www.drugpatentwatch.com