Point of Care - Clinical decision support for Lamotrigine . Treatment and management. Indications, Mechanism of Action, Administration, Adverse Effects, Contraindications, Monitoring, Toxicity, Enhancing Healthcare Team Outcomes Lamotrigine likely acts by inhibiting sodium currents by selective binding to the inactive sodium channel, suppressing the release of the excitatory amino acid, glutamate. The mechanism of action of lamotrigine in reducing anticonvulsant activity is likely the same in managing bipolar disorder. Lamotrigine Tablets - Lamotrigine Tablets USP, 100 mg are white to off-white, round, flat, beveled-edged tablets with bisect on one side; one side of the bisect is debossed with logo of "ZC" and ... Description Lamotrigine is used alone or together with other medicines to help control certain types of seizures (eg, partial seizures, tonic-clonic seizures, or Lennox-Gastaut syndrome) in the treatment of epilepsy. This medicine cannot cure epilepsy and will only work to control seizures for as long as you continue to take it. It can also be used in the treatment of bipolar disorder (manic-depressive illness) in adults. This medicine is available only with your doctor's prescription.