Our current data indicates side effects are few and generally mild. The most common side effect is a mild tension headache at the site of stimulation, which can last 1-2 hours and responds well to over-the-counter analgesics.   Other possible side effects include hyperactivity, agitation, fatigue, or euphoria. These effects are temporary and typically pass shortly after treatment. With brain stimulation there is also a risk of seizures; however, the risk is minimal.  The risks of seizure associated with MeRT (Approximately 1 in 100,000) are less than the stated risk of seizure associated with a Nintendo Switch (Approximately 1 in 4,000) (Click here view the Nintendo warning label.)