Both gabapentin and pregabalin can be misused and can cause physical dependence, but available research generally finds stronger misuse and abuse signals for pregabalin. The difference does not mean gabapentin is risk-free. For both drugs, misuse is reported most often in people with other substance use disorders, particularly opioid use disorder.
What do gabapentin and pregabalin have in common?
Both are gabapentinoids that bind to the alpha-2-delta subunit of voltage-gated calcium channels. They are prescribed for different neurologic and pain conditions and can cause dizziness, sedation, and impaired coordination.
Both drugs have documented cases of misuse, dependence, withdrawal, and overdose, especially when combined with opioids or other central nervous system depressants.
Why may pregabalin have greater misuse potential?
Pregabalin is absorbed more rapidly and predictably than gabapentin, and several reviews suggest it may produce more pronounced rewarding or euphoric effects in some users. Population and pharmacovigilance studies have reported higher misuse signals for pregabalin than gabapentin.
That is one reason pregabalin is federally classified as a Schedule V controlled substance while gabapentin is not federally scheduled.
Can both cause physical dependence?
Yes. Repeated exposure to either medication can lead to nervous-system adaptation. Abrupt discontinuation after regular use can trigger withdrawal symptoms such as anxiety, insomnia, agitation, sweating, nausea, tremor, and other symptoms.
Stopping either medication should be discussed with the prescribing clinician rather than done abruptly without guidance.
Which drug is more often misused?
Several systematic reviews and observational studies suggest pregabalin is more frequently misused or associated with stronger misuse signals than gabapentin. However, the size of that difference varies by population and study design.
A 2026 systematic review update continued to find substantial misuse evidence for both drugs.
Who is most at risk?
For both medications, higher risk is repeatedly associated with opioid use disorder, polysubstance use, prior substance misuse, and some psychiatric conditions.
That means the patient’s history often matters more than simply labeling one medication “safe” and the other “unsafe.”
How do overdose risks compare?
Either medication can add to sedation and breathing risk when combined with opioids or other depressants. FDA warns that gabapentinoids can cause serious breathing problems in people with respiratory risk factors, particularly when opioids are also used.
Published reviews suggest pregabalin may be more strongly associated with misuse-related harm in some settings, but mixed-drug exposure is a major concern for both.
What is the practical difference for someone taking these medications?
The safest approach is to take either drug only as prescribed, avoid combining it with unapproved sedatives or opioids, and tell the prescriber about any history of substance misuse. A person who is taking more than prescribed or experiencing withdrawal should seek medical evaluation rather than attempting a sudden stop.
Trinity has separate guides on gabapentin misuse and dependence and pregabalin misuse and dependence.
Frequently asked questions
Is pregabalin more addictive than gabapentin?
Research generally finds greater misuse and abuse signals for pregabalin, but risk varies by person, dose, duration, and co-occurring substance use.
Can both drugs cause withdrawal?
Yes. Both can produce physical dependence and withdrawal after sustained use.
Is gabapentin safer because it is not federally controlled?
Not necessarily. Federal scheduling and individual clinical risk are different questions. Gabapentin still has documented misuse, dependence, and respiratory-risk concerns.
Are these drugs dangerous with opioids?
They can be. FDA warns that gabapentinoids combined with opioids can increase the risk of serious breathing problems.
Sources
- Systematic Review Update: Misuse of Pregabalin and Gabapentin
- British Journal of Clinical Pharmacology: Patterns of Gabapentin and Pregabalin Misuse
- European Neuropsychopharmacology: Addiction Risk of Gabapentin and Pregabalin
- FDA: Serious Breathing Problems With Gabapentinoids
This article is general educational information and does not replace individualized medical advice.