Last checked September 2026 against 16 sources · Editorial policy
Gabapentin for menopause hot flashes
Gabapentin, an epilepsy and nerve pain medicine, is used off-label to treat menopause hot flashes and night sweats. At 900 mg a day, it cut hot flash severity by 46% after 8 weeks in a trial, compared with 15% on placebo; 300 mg a day didn't work. The most common side effects are sleepiness, tiredness and dizziness. It's recommended by The North American Menopause Society as a non-hormonal option.
Gabapentin, often taken at bedtime, reduces hot flashes and night sweats. Typical dosing, how well it works compared with HRT, and side effects like drowsiness.
Gabapentin for menopause: expectation vs reality
What people often expect
“A low dose of gabapentin at night should be enough for hot flashes”
What the evidence shows
Dose matters. In a trial of 420 women with breast cancer, gabapentin 900 mg a day reduced hot flash severity by 49% at 4 weeks and 46% at 8 weeks, but 300 mg a day wasn't significantly better than placebo for frequency and severity. Only the higher dose worked, so doctors usually build up gradually to around 900 mg.
How gabapentin treats menopause hot flashes
How gabapentin helps hot flashes
Gabapentin is licensed for epilepsy and nerve pain; the NHS says it's thought to work by calming abnormal electrical activity in the brain and pain signals in the brain and spine. How it reduces hot flashes isn't fully understood, but it's been tested in randomized trials, and a JAMA meta-analysis found it reduced daily hot flashes by 2.05 more than placebo.
Learn more →Gabapentin dosage for hot flashes
The dose with evidence is 900 mg a day. In the main trial, 900 mg reduced hot flash severity scores by 49% at 4 weeks and 46% at 8 weeks, while 300 mg a day did only slightly better than placebo. Starting low and increasing gradually helps with side effects such as dizziness; the NHS notes a doctor may increase the dose more slowly if they're a problem.
Gabapentin vs estrogen for hot flashes
In a small trial of postmenopausal women with moderate to very severe hot flashes, gabapentin 600 mg reduced hot flash frequency by 58.9% and a low-dose estradiol patch by 70.1% after 8 weeks, a difference that wasn't statistically significant. The authors concluded gabapentin was a reasonable alternative for women who can't take estrogen. Estrogen overall reduces hot flashes by about 75%.
Learn more →Gabapentin after breast cancer
Gabapentin is one of the most studied non-hormonal hot flash treatments in breast cancer survivors, including the 420-woman trial that established the 900 mg dose. It's a common alternative to paroxetine for women taking tamoxifen, since the paroxetine label advises considering avoiding that combination. Discuss the choice with your oncology team.
Learn more →Gabapentin side effects
Common side effects, in more than 1 in 100 people, include feeling sleepy, tired or dizzy, nausea, vomiting, diarrhea, mood changes, swollen arms and legs, blurred vision and dry mouth. Sleepiness and dizziness usually wear off within a week or two. In the estradiol comparison trial, drowsiness, dizziness and fatigue were the main side effects in the gabapentin group.
Gabapentin dependence and stopping it
Some people become addicted to gabapentin, and stopping suddenly can cause withdrawal symptoms such as anxiety, panic attacks and sweating. The NHS advises reducing the dose gradually and not stopping without talking to your doctor. In the UK it's a controlled medicine. Tell your doctor if you've ever misused or been addicted to a medicine before starting it.
Who shouldn't take gabapentin
Tell your doctor if you've had an allergic reaction to gabapentin, have misused or been addicted to a medicine, are trying to get pregnant or are pregnant, have kidney problems, or have a lung condition such as COPD or severe asthma. Alcohol can add to the sleepiness, so the NHS suggests avoiding it for the first few days until you know how gabapentin affects you.
Gabapentin for night sweats and sleep
Sleepiness is a common side effect of gabapentin, so ask your doctor whether taking your dose in the evening would suit you, especially if night sweats are your worst symptom. In the trials, it reduced hot flash frequency and severity overall. If sleep problems continue once night sweats improve, CBT for insomnia is the treatment with the best evidence.
Learn more →Gabapentin vs pregabalin for hot flashes
Pregabalin works in a similar way to gabapentin and is also used for epilepsy, nerve pain and anxiety, but the two aren't the same. For hot flashes, The North American Menopause Society recommends gabapentin, with good evidence, but lists pregabalin among options it doesn't recommend. If you've been offered pregabalin for hot flashes, ask whether gabapentin would be a better-supported choice.
Gabapentin and contraception in perimenopause
If you still have periods, you may still need contraception, and gabapentin doesn't stop any type of contraception from working, according to the NHS. The exception is if it makes you vomit or causes severe diarrhea for more than 24 hours while you take the pill, when the pill may not protect you. Gabapentin also isn't advised if you're trying to get pregnant or are pregnant, so tell your doctor.
Learn more →Gabapentin for hot flashes by the numbers
From the studies on this page
reduction in hot flash severity at 8 weeks on gabapentin 900 mg vs placebo
46% vs 15%
reduction in hot flash frequency with gabapentin 600 mg vs a low-dose estradiol patch
58.9% vs 70.1%
900 mg
2.05
Gabapentin is licensed for epilepsy and nerve pain; its use for hot flashes is based on the trials above and on menopause society recommendations.
Gabapentin vs other hot flash treatments
Gabapentin 900 mg a day
Strong evidenceProven dose for hot flashes, cheap as a generic, no tamoxifen interaction. Sleepiness and dizziness are common at first. Reduce slowly when stopping. Avoid alcohol for the first few days.
SSRIs and SNRIs
Strong evidenceParoxetine 7.5 mg, escitalopram and venlafaxine cut hot flashes by about 40% to 65% and can help mood. Paroxetine is avoided with tamoxifen.
Related guide →Fezolinetant or elinzanetant
Strong evidenceTargeted non-hormonal pills for hot flashes, working from week 4, but they need liver monitoring.
Related guide →Estrogen HRT
Strong evidenceThe most effective hot flash treatment, about 75% fewer hot flashes, and it also treats vaginal dryness and protects bone, if it's suitable for you.
Related guide →
When to call a doctor about gabapentin
Urgent: Trouble breathing, or yellow skin or eyes, on gabapentin
Get urgent medical help. These are rare but serious side effects.
Urgent: Low mood or thoughts of self-harm
Talk to your doctor. If you have thoughts of self-harm, call or text 988, or call 911 in an emergency.
Dizziness or sleepiness that doesn't wear off after a week or two
Ask your doctor about lowering the dose or increasing it more slowly.
Wanting to stop gabapentin
Talk to your doctor first; the dose should be reduced gradually to avoid withdrawal.
Gabapentin for menopause: questions women ask
Does gabapentin help menopause symptoms?
It helps hot flashes and night sweats. At 900 mg a day it reduced hot flash severity by 46% at 8 weeks in a trial. It doesn't treat vaginal dryness or protect bone.
What is the gabapentin dose for hot flashes?
900 mg a day is the dose with trial evidence; 300 mg a day wasn't enough in the main trial. Doctors usually start lower and increase gradually to limit dizziness and sleepiness.
How should I take gabapentin for hot flashes?
As your doctor prescribes, usually building up gradually toward the dose that works, which in trials was 900 mg a day. You can take it with or after food if it makes you feel sick. Don't drive until you know how it affects you, and don't stop it suddenly.
Can gabapentin cause night sweats?
Sweating is listed by the NHS as a withdrawal symptom if gabapentin is stopped suddenly. That's one reason the dose should be reduced gradually. Night sweats that start while you're taking it steadily should be discussed with your doctor.
How long does gabapentin take to work for hot flashes?
In the main trial, the benefit was clear by 4 weeks at 900 mg. The NHS says gabapentin takes a few weeks to work fully.
Is gabapentin as good as HRT for hot flashes?
Estrogen is generally more effective. In one small trial, gabapentin 600 mg reduced hot flash frequency by 58.9% vs 70.1% for a low-dose estradiol patch, a difference that wasn't statistically significant.
Can I drink alcohol on gabapentin?
You can, but it may make you sleepier. The NHS suggests avoiding alcohol for the first few days until you know how gabapentin affects you.
Is gabapentin approved for hot flashes?
Gabapentin is licensed for epilepsy and nerve pain, not specifically for hot flashes. Its use for hot flashes is based on randomized trials, and The North American Menopause Society recommends it as a non-hormonal option with good evidence.
What are the side effects of gabapentin for menopause?
The most common are sleepiness, tiredness and dizziness, which usually wear off within a week or two, plus nausea, dry mouth, swollen arms and legs, blurred vision and mood changes. Serious side effects are rare. Stopping suddenly can cause withdrawal.
Sources
- NHS. Gabapentin.
- Pandya KJ, Morrow GR, Roscoe JA, et al. Gabapentin for hot flashes in 420 women with breast cancer: a randomised double-blind placebo-controlled trial. Lancet. 2005;366(9488):818-24.
- NHS. Gabapentin: side effects.
- The North American Menopause Society. The 2023 nonhormone therapy position statement of The North American Menopause Society. Menopause. 2023;30(6):573-590.
- NHS. Gabapentin: common questions.
- Nelson HD, Vesco KK, Haney E, et al. Nonhormonal therapies for menopausal hot flashes: systematic review and meta-analysis. JAMA. 2006;295(17):2057-71.
- Aguirre W, Chedraui P, Mendoza J, et al. Gabapentin vs. low-dose transdermal estradiol for treating post-menopausal women with moderate to very severe hot flushes. Gynecol Endocrinol. 2010;26(5):333-7.
- Crandall CJ, Mehta JM, Manson JE. Management of Menopausal Symptoms: A Review. JAMA. 2023;329(5):405-420.
- Prescribing information: Brisdelle (paroxetine 7.5 mg capsules). Legacy Pharma, 2025. DailyMed, US National Library of Medicine.
- NHS. Gabapentin: who can and cannot take it.
- McCurry SM, Guthrie KA, Morin CM, et al. Telephone-Based Cognitive Behavioral Therapy for Insomnia in Perimenopausal and Postmenopausal Women With Vasomotor Symptoms: A MsFLASH Randomized Clinical Trial. JAMA Intern Med. 2016;176(7):913-20.
- Prescribing information: Veozah (fezolinetant tablets). Astellas Pharma, 2026. DailyMed, US National Library of Medicine.
- Prescribing information: Lynkuet (elinzanetant capsules). Bayer HealthCare, 2026. DailyMed, US National Library of Medicine.
- The North American Menopause Society. The 2022 hormone therapy position statement of The North American Menopause Society. Menopause. 2022;29(7):767-794.
- Federal Communications Commission. 988 Suicide & Crisis Lifeline.
- National 911 Program. 911.gov.
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