Epilepsy treatment starts with anti-seizure medication, which controls seizures in roughly two-thirds of people. For the remaining third, options include surgery, brain stimulation devices, and specialized diets. The right treatment depends on the type of seizures you have, how your body responds to medication, and whether a specific area of the brain is causing the problem.
How Anti-Seizure Medications Work
Anti-seizure medications don’t cure epilepsy. They prevent seizures by changing how nerve cells in the brain fire and communicate. There are four main ways these drugs do this: calming overactive electrical signals by targeting sodium, calcium, or potassium channels in nerve cells; boosting the brain’s natural braking system (a chemical called GABA that quiets neural activity); reducing excitatory signaling between neurons; or limiting how much neurotransmitter gets released at nerve terminals in the first place.
Most people start on a single medication. If that one doesn’t work or causes intolerable side effects, a different drug is tried next. The specific medication your doctor picks depends heavily on your seizure type.
Matching Medication to Seizure Type
This is where treatment gets nuanced. Almost all anti-seizure medications work against focal seizures (those starting in one part of the brain), but fewer are effective for generalized seizures (those involving the whole brain at once). Choosing the wrong class of drug can actually make certain seizure types worse.
For generalized epilepsy with tonic-clonic seizures, valproate remains the most effective option and is typically a first choice for male patients. For absence seizures alone, ethosuximide is the preferred drug. Levetiracetam is a versatile, broad-spectrum option with strong evidence for focal seizures, generalized tonic-clonic seizures, and myoclonic seizures. Lamotrigine is another broad-spectrum medication, though it’s less effective against absence seizures and can sometimes worsen myoclonic jerks.
Some medications must be avoided in certain epilepsy types. Traditional sodium channel blockers like carbamazepine, phenytoin, and oxcarbazepine can worsen absence and myoclonic seizures, so they’re not used in generalized epilepsy syndromes. The same goes for gabapentin, pregabalin, and a few others. When your seizure type isn’t entirely clear, doctors lean toward a broad-spectrum agent to avoid accidentally triggering the wrong kind of activity.
Side Effects of Long-Term Use
The most common side effects across anti-seizure medications include drowsiness, dizziness, coordination problems, tremor, cognitive fog, mood changes, and reduced sex drive. Some drugs carry these risks more than others. Topiramate and barbiturates, for instance, are more likely to cause sedation and thinking difficulties. Older adults tend to be more sensitive to cognitive and coordination effects, while children are more prone to behavioral changes.
Long-term use raises additional concerns. People on anti-seizure medications have roughly four to five times the risk of developing osteoporosis and two to three times the risk of bone fractures compared to those not taking these drugs. Certain medications require organ-specific monitoring: valproate can cause serious liver damage in people with specific genetic conditions, lamotrigine has been linked to heart rhythm problems in people with underlying cardiac disease, and cannabidiol (used for certain severe epilepsy syndromes) can elevate liver enzymes. Periodic blood work and, in some cases, therapeutic drug monitoring help catch these issues early.
When Medications Don’t Work
Epilepsy is formally classified as drug-resistant after two appropriately chosen and adequately tried medications (used alone or in combination) fail to stop seizures. “Seizure freedom” in this context means going seizure-free for at least 12 months or three times the longest gap between your previous seizures, whichever is longer. Once epilepsy meets this threshold, the conversation shifts to non-medication options.
Epilepsy Surgery
Surgery is the most established option for drug-resistant epilepsy, particularly when seizures originate from a single identifiable area of the brain. The most common procedure is anterior temporal resection, which removes the portion of the temporal lobe responsible for seizure activity. A large study following 615 adults after epilepsy surgery found that about 52% remained seizure-free at five years and 47% at ten years. Those numbers reflect all surgery types combined, including more complex cases.
Other surgical approaches include removing a specific brain lesion causing seizures, disconnecting the two halves of the brain (corpus callosotomy) to prevent seizures from spreading, and hemispherectomy for severe cases involving one entire hemisphere. Laser ablation is a newer, less invasive technique that uses heat to destroy a small area of tissue through a tiny incision, offering shorter hospital stays and faster recovery compared to open surgery.
Brain Stimulation Devices
When surgery isn’t possible, implanted devices that deliver electrical pulses to the brain or nervous system can reduce seizure frequency. Three types are currently available for drug-resistant focal epilepsy.
- Responsive neurostimulation (RNS) is a device implanted in the skull that monitors brain activity in real time and delivers targeted electrical pulses the moment it detects abnormal patterns. It achieved a 66% seizure reduction at one year and 68% at three years in clinical studies.
- Deep brain stimulation (DBS) involves electrodes placed in a deep brain structure involved in seizure networks, connected to a battery pack in the chest. Seizure reduction was 58% at one year and 64% at three years.
- Vagus nerve stimulation (VNS) is the oldest and least invasive of the three. A small generator in the chest sends regular pulses to the vagus nerve in the neck. It starts slower, with 33% seizure reduction at one year, but improves to 54% by year three.
At one year, both RNS and DBS significantly outperformed VNS. Over time, VNS narrows the gap, but RNS and DBS consistently show stronger early results. None of these devices typically eliminate seizures entirely. They’re designed to reduce how often seizures happen and how severe they are.
Dietary Therapy
The ketogenic diet is a high-fat, very-low-carbohydrate diet that has been used to treat epilepsy for over a century. The classic version uses a strict 4:1 ratio: four grams of fat for every one gram of carbohydrate and protein combined. This forces the body into ketosis, a metabolic state that appears to stabilize brain activity, though the exact mechanism isn’t fully understood.
The Modified Atkins Diet is a more flexible alternative that allows greater protein intake while still restricting carbohydrates enough to maintain ketosis. Both approaches require medical supervision and typically the guidance of a dietitian, especially in children. Dietary therapies are most commonly used alongside medications in drug-resistant cases, not as a replacement for them.
Treatment in Children
Children with epilepsy generally respond to the same medications as adults when their seizure types match, and drug efficacy demonstrated in adults is often extrapolated to pediatric patients. But children are not small adults. They metabolize drugs differently, experience different side effect profiles, and face unique risks to developing brains. Behavioral side effects tend to be more prominent in children, while cognitive and coordination problems are more common in older adults on the same drugs.
Many children still receive medications off-label because pediatric-specific trials are difficult to conduct. There are ethical concerns about giving children a placebo when effective treatments already exist. As a result, safety and dosing data in younger children often lag behind what’s available for adults. Pediatric epilepsy clinics typically adjust doses based on weight and closely monitor growth, development, and school performance throughout treatment.
Seizure First Aid
Knowing what to do when someone has a tonic-clonic (convulsive) seizure is part of living with epilepsy, whether for yourself or someone around you. If a person appears to be falling, ease them to the ground. Turn them gently onto one side with their mouth pointing downward to keep the airway clear. Move nearby objects out of the way, place something soft under their head, remove their glasses, and loosen anything around the neck. Time the seizure from the start.
Call 911 if the seizure lasts longer than five minutes, if a second seizure follows shortly after, if the person has trouble breathing or waking up afterward, or if they’re injured. You should also call for help if it’s their first seizure, if they’re pregnant, or if they have diabetes and lose consciousness.