What happens when you take alcohol with gabapentin?
Gabapentin, sold as Neurontin, Gralise, and Horizant, is approved for epilepsy and nerve pain after shingles, and is widely prescribed off-label for chronic pain, anxiety, restless legs syndrome, and even for alcohol use disorder. Alcohol is a central nervous system depressant, and so is gabapentin. When you take them together, their effects stack:
- Both slow the central nervous system. Alcohol and gabapentin each dampen brain and nerve signaling. Taken together, they produce more drowsiness, dizziness, and slowed reaction time than either does alone.
- Breathing can be suppressed. The most serious shared effect is on the brainstem centers that drive breathing. Combined CNS depressants can blunt the drive to breathe, which is the basis of the FDA's warning.
- Coordination and judgment deteriorate. The pairing worsens unsteadiness, motor incoordination, and impaired driving, raising the chance of falls and accidents.
- Risk multiplies with each added sedative. If opioids, benzodiazepines, sleep aids, or other depressants are also on board, the suppressant effect compounds and the danger rises sharply.
In December 2019 the FDA issued a Drug Safety Communication warning that gabapentin (and the related drug pregabalin) can cause serious, potentially life-threatening respiratory depression when combined with other CNS depressants. The FDA specifically named alcohol, opioids, benzodiazepines, antihistamines, and reduced lung function in older adults as the highest-risk situations, and required label updates for all gabapentinoids.
Why is this important?
Gabapentin was once viewed as low-risk because it does not cause classic opioid-style sedation in healthy young adults at usual doses. The 2019 FDA action changed that picture. In its review of post-marketing reports, the agency identified cases of serious breathing difficulty and deaths in patients who took gabapentin together with alcohol or other CNS depressants. Nearly all of those cases occurred in people who had at least one recognized risk factor.
The people at highest risk are:
- Older adults
- People with chronic lung disease such as COPD, severe asthma, or restrictive lung disease
- People with sleep apnea, treated or untreated
- Anyone also taking opioids, benzodiazepines, muscle relaxants, sedating antihistamines, or sleep aids
- People with a history of substance use disorder
- People with reduced kidney function, because gabapentin is cleared by the kidneys and can build up
There is also a difficult clinical situation worth naming: gabapentin is sometimes used to treat alcohol use disorder. If someone relapses and drinks while taking it, the same amount of alcohol can hit harder, because the medication amplifies alcohol's sedating effects.
Beyond breathing, the combination clearly worsens cognitive impairment, falls (especially in older adults), motor incoordination, and impaired driving. Gabapentin alone commonly causes dizziness; adding alcohol makes that worse.
What should you do?
The core message is simple: avoid alcohol while taking gabapentin, and review your full medication list and any drinking with your doctor or pharmacist. Here is how to handle each stage:
Before any change (starting gabapentin, or planning to drink):
- Tell your prescriber and pharmacist about all sedating medicines you take, including opioids, benzodiazepines, sleep aids, muscle relaxants, and antihistamines.
- Flag any lung disease, sleep apnea, kidney problems, or older age, since these raise the risk.
- Ask directly whether any alcohol is safe for you, and do not assume it is.
Every day while taking gabapentin:
- Treat "avoid alcohol" as the default. Be strictest if you are older, have any lung disease, sleep apnea, or kidney disease, or take other sedatives.
- Do not drive or operate machinery if you have had any alcohol on gabapentin.
- Take your doses as prescribed and do not add extra sedating medicines without checking first.
After a change or if warning signs appear:
- Seek urgent care for severe drowsiness, slow or shallow breathing, blue lips or fingertips, confusion, unresponsiveness, or fainting.
- If you are being treated for alcohol use disorder, agree on a relapse plan with your prescriber in advance, since a relapse drink can be more dangerous on gabapentin than it would be otherwise.
- Report any new sedation or breathing changes to your prescriber promptly.
Which specific products are affected?
The FDA warning applies to all gabapentin products, including Neurontin capsules, tablets, and oral solution; Gralise extended-release tablets; Horizant (gabapentin enacarbil) extended-release tablets; and all generic gabapentin. The closely related drug pregabalin (Lyrica) carries an essentially identical FDA warning.
On the alcohol side, this means any ethanol beverage: beer, wine, hard seltzer, spirits, fortified wines, and cocktails. Other CNS depressants that compound the risk include opioids (such as oxycodone, hydrocodone, morphine, fentanyl, tramadol, and codeine), benzodiazepines (such as alprazolam, lorazepam, clonazepam, and diazepam), Z-drug sleep aids (such as zolpidem and eszopiclone), muscle relaxants (such as cyclobenzaprine and baclofen), sedating antihistamines (such as diphenhydramine and hydroxyzine), and cannabis. Combining three or more depressants at once is especially dangerous.
The science behind it
The central evidence is the FDA's December 19, 2019 Drug Safety Communication, "FDA warns about serious breathing problems with seizure and nerve pain medicines gabapentin (Neurontin, Gralise, Horizant) and pregabalin (Lyrica)." It was based on the agency's review of post-marketing safety reports and clinical and observational data, and it concluded that gabapentinoids can cause serious, potentially fatal respiratory depression when used with other CNS depressants. The agency noted that the patients who experienced these events generally had at least one risk factor, such as older age, lung disease, or concurrent use of opioids or other sedatives, and it required new warnings on the labels of all gabapentinoid products.
University of Utah Health Pharmacy Services published a clinical summary of the same FDA action, reinforcing for prescribers that gabapentin and pregabalin can increase the risk of respiratory depression, particularly when combined with alcohol, opioids, or other CNS depressants, and in patients with compromised respiratory function.
Sources:
- FDA Drug Safety Communication, December 19, 2019: FDA warns about serious breathing problems with gabapentin and pregabalin.
- University of Utah Health Pharmacy Services alert (2019): Gabapentin and pregabalin may increase risk of respiratory depression.
Frequently Asked Questions
Can I have one drink while taking gabapentin?
The safest answer is no. Even modest alcohol adds to gabapentin's sedating effect. If your prescriber has specifically cleared occasional drinking for you, keep it minimal, never combine it with another sedative, and do not drive afterward. When in doubt, ask your doctor or pharmacist rather than assuming a small amount is fine.
Why is this combination more dangerous for some people than others?
Risk depends heavily on your individual situation. Older adults, people with lung disease or sleep apnea, those with reduced kidney function, and anyone taking opioids, benzodiazepines, or other sedatives face a substantially higher chance of dangerous breathing suppression than a younger person on gabapentin alone.
What are the warning signs I should watch for?
Seek urgent care for severe drowsiness, slow or shallow breathing, blue lips or fingertips, confusion, unresponsiveness, or fainting. These can signal respiratory depression and need immediate attention.
I'm taking gabapentin to help with drinking. Doesn't that mean it's safe with alcohol?
No. Using gabapentin for alcohol use disorder does not make alcohol safe to combine with it. In fact a relapse drink can hit harder, because gabapentin amplifies alcohol's sedating effects. Talk with your prescriber about a clear relapse plan.
Does this warning also apply to pregabalin (Lyrica)?
Yes. The FDA's 2019 warning covers both gabapentin and the closely related drug pregabalin (Lyrica), with essentially identical concerns about respiratory depression when combined with alcohol or other CNS depressants.
How long after stopping gabapentin do I need to wait before drinking?
This depends on your dose, your kidney function, and your overall health, so there is no single number that fits everyone. Ask your doctor or pharmacist for guidance specific to you rather than guessing.
Key takeaways
- Gabapentin and alcohol are both CNS depressants, and combining them increases drowsiness, dizziness, and the risk of slowed breathing.
- The FDA's 2019 Drug Safety Communication warns this combination can be serious or life-threatening, especially in older adults, people with lung disease or sleep apnea, and those also taking opioids or other sedatives.
- The default advice is to avoid alcohol on gabapentin, and to be strictest if you have any of those risk factors.
- Do not drive after drinking on gabapentin, and seek urgent care for severe drowsiness, slow or shallow breathing, blue lips, or confusion.
- Review your full medication list and any drinking with your doctor or pharmacist. The same warning applies to pregabalin (Lyrica).