Medication

I take lamotrigine 150 mg twice a day and i thought i missed my morning dose so i took an extra one about 2 hours later, im not worried about side effects or any of that but my main concern is there a risk of having a seizure if i accidentaly took an extra one ? ( i figure its not nearly as bad as missing a dose but i just want to ask anyway. I have had no seizures yet this year so i worry alot when i mess up my meds in any way)