There is no set time limit for taking gabapentin. The FDA label does not specify a maximum duration of treatment, and many people take it for years to manage epilepsy or nerve pain. That said, long-term use comes with real considerations, particularly around cognitive health, kidney function, and the process of eventually stopping the medication.
What the FDA Label Says About Duration
Gabapentin is approved for two main uses: managing nerve pain after shingles (postherpetic neuralgia) in adults, and as an add-on treatment for partial seizures in people with epilepsy. For epilepsy, the medication only works to control seizures for as long as you continue taking it, which means many patients stay on it indefinitely.
The prescribing information notes that doses up to 2,400 mg per day have been “well tolerated in long-term clinical studies” for adults and adolescents with epilepsy. For children ages 3 to 11, doses up to 50 mg per kilogram of body weight per day were well tolerated in long-term trials. But “well tolerated” in a clinical study and “risk-free for decades” are different things, and newer research has started filling in that gap.
Cognitive Risks With Prolonged Use
The most concerning data around long-term gabapentin involves the brain. A study from Case Western Reserve University found that patients with chronic low back pain who had six or more gabapentin prescriptions faced a 29% higher risk of dementia and an 85% higher risk of mild cognitive impairment within 10 years, compared with patients who never took gabapentin after their diagnosis. The risk was even more striking in younger adults: those between 35 and 49 had more than twice the risk of dementia and more than three times the risk of mild cognitive impairment compared to their non-gabapentin counterparts.
A separate study looking at adults 65 and older without preexisting cognitive problems found that new gabapentin users had 1.5 to 1.9 times the odds of measurable cognitive decline after just one year, depending on which rating scale was used. These are observational studies, meaning they can’t prove gabapentin directly caused the decline. People taking gabapentin may have underlying conditions that independently raise dementia risk. But the pattern across multiple studies is enough to warrant attention, especially if you’ve been on the medication for several years or are considering staying on it long term.
Fall Risk in Older Adults
For people 65 and older, gabapentin raises the risk of falls, and that risk appears to grow over time. One study matched new gabapentin users with non-users and tracked them for two years. After the first year, gabapentin users had a modestly elevated fall risk that wasn’t statistically significant. By the second year, they were 2.5 times more likely to have fallen. A separate study of hospitalized surgical patients found that those using gabapentin at home made up 16% of patients who fell during their stay, compared with 11% of patients who didn’t fall.
Falls matter because in older adults they frequently lead to fractures, hospitalizations, and long-term loss of independence. If you’re over 65 and taking gabapentin, this is worth discussing with your prescriber, particularly if you’ve noticed any balance changes or dizziness.
Kidney Function and Dose Adjustments
Gabapentin is cleared almost entirely through the kidneys. If your kidney function declines, the drug builds up in your body faster than it can be eliminated, which can cause toxicity: excessive drowsiness, confusion, and in severe cases, life-threatening complications. Research published in The American Journal of Medicine found that patients with chronic kidney disease “often receive inappropriately high gabapentin dosage for their kidney function,” leading to preventable toxicity.
This is especially relevant for long-term users because kidney function naturally decreases with age. A dose that was perfectly safe at 50 may be too high at 70. If you’ve been on gabapentin for years, periodic blood work to check kidney function helps ensure your dose still matches your body’s ability to process the drug.
Dependence and What It Feels Like
Gabapentin is not classified as a controlled substance at the federal level, though five states (Kentucky, West Virginia, Michigan, Tennessee, and Virginia) have reclassified it as a Schedule V controlled substance due to misuse concerns. Regardless of its legal classification, your body can become physically dependent on it over time. Dependence means your nervous system adapts to the drug’s presence, and removing it abruptly causes withdrawal symptoms.
Withdrawal from gabapentin can include anxiety, insomnia, nausea, sweating, and in people who take it for epilepsy, an increased risk of seizures. The FDA label explicitly warns against stopping suddenly and recommends tapering over a minimum of one week, though many people need a much slower reduction.
How Tapering Works
If you and your prescriber decide it’s time to stop gabapentin, the standard approach is a gradual dose reduction. Clinical guidelines suggest reducing by 5 to 10% of your current total dose every two to six weeks. As a general rule, no single weekly reduction should exceed 300 mg. Some people tolerate a faster taper of up to 25% at each step, while others need a slower, more drawn-out schedule.
The total time to come off gabapentin depends on your dose and how long you’ve been taking it. Someone on 900 mg per day might taper over a few weeks. Someone on 2,400 mg per day who has taken it for years could need several months. At each step, the new dose is recalculated before the next reduction. If withdrawal symptoms flare up, the taper slows down or pauses rather than pushing through.
Practical Takeaways for Long-Term Users
Taking gabapentin for months or even years is common and, for many people, medically appropriate. Epilepsy often requires lifelong seizure control, and chronic nerve pain doesn’t always resolve on its own. The question isn’t whether long-term use is automatically dangerous but whether the benefits still outweigh the risks as time passes and your health changes.
A few things make long-term use safer. Regular kidney function checks help catch dose mismatches before they cause problems. Paying attention to memory, concentration, and balance gives you early signals that the drug may be affecting your brain or coordination. And if the original reason for the prescription has improved or resolved, a supervised taper is a reasonable conversation to have. Gabapentin doesn’t have a built-in expiration date for use, but it does warrant periodic reassessment rather than indefinite autopilot.