Gabapentin may improve recovery after brain injury

A widely used, low-cost medication could play an unexpected role in improving recovery after traumatic brain injury, according to early research — though experts caution the findings are far from definitive.

In a large observational study, treatment with Gabapentin was linked to lower rates of long-term cognitive impairment in patients with mild Traumatic Brain Injury, and reduced mortality among those with severe injuries.

Early signals, not clinical proof

The study, presented at the American Academy of Neurology Annual Meeting 2026, analyzed nearly 50,000 adults with documented brain injuries.

Researchers found that patients who received gabapentin after mild TBI had a 22% lower risk of developing persistent cognitive impairment over two years. Among patients with severe TBI, the drug was associated with a 46% lower risk of death.

Still, investigators emphasized that the results show correlation — not causation.

“We can’t say gabapentin caused these benefits,” said Isaac Thorman, a medical student involved in the research. “But the findings support further study.”

A potential shift in a limited treatment landscape

Traumatic brain injury remains a leading cause of disability worldwide, often leaving survivors with long-term cognitive and psychiatric challenges.

Despite the scale of the problem, there are few medications proven to improve long-term neurological outcomes.

Gabapentin is already widely prescribed for nerve pain and seizures, and is commonly used in TBI patients to manage agitation and discomfort. Its potential impact on recovery, however, has not been well understood.

How the drug may help recovery

Experts say the findings are biologically plausible, even if not yet confirmed.

Rather than directly repairing brain damage, gabapentin may help stabilize the body’s response after injury.

“It may be recovery-protective,” said neurologist Shaheen Lakhan, who was not involved in the study.

After a brain injury, patients often experience what researchers describe as a “secondary storm” — a cascade of inflammation, disrupted sleep, pain and neural overactivity that can worsen outcomes.

Gabapentin may help regulate these processes by reducing excessive neuronal signaling and improving sleep and pain control, potentially creating better conditions for recovery.

Risks and limitations remain

The study also found higher rates of certain side effects among patients taking gabapentin, including psychiatric and cardiovascular issues — though researchers noted these are consistent with the drug’s known safety profile.

Importantly, the research was based on retrospective data, meaning other factors could have influenced the results.

Randomized clinical trials will be needed to determine whether gabapentin truly improves recovery after brain injury.

What it means for patients

For now, experts stress that the findings should not change current medical practice.

Gabapentin is not approved as a treatment for cognitive impairment following brain injury, and clinicians are not being advised to prescribe it for that purpose.

However, the results highlight a promising direction for future research — particularly because the drug is already widely available and relatively inexpensive.

If confirmed, even modest improvements in recovery could have a significant impact on patients and health systems alike.