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Gabapentin for Hot Flashes vs Oxybutynin for Hot Flashes

A side-by-side comparison of two menopause relief methods — efficacy, cost, how they work, and who shouldn't use them.

Last verified October 11, 2026Updated October 12, 2026

Side-by-side comparison

Gabapentin for Hot Flashes An off-label gabapentin prescription that may reduce hot flashes. Pregabalin is a related gabapentinoid but is not recommended for hot flashes.
Oxybutynin for Hot Flashes An off-label anticholinergic prescription (oxybutynin), approved for overactive bladder, that can reduce moderate to severe hot flashes.

Method	Gabapentin for Hot Flashes An off-label gabapentin prescription that may reduce hot flashes. Pregabalin is a related gabapentinoid but is not recommended for hot flashes.	Oxybutynin for Hot Flashes An off-label anticholinergic prescription (oxybutynin), approved for overactive bladder, that can reduce moderate to severe hot flashes.
Efficacy	Gabapentin for Hot Flashes Recommended Recommended by the Menopause Society for symptom relief. Trial average: 45% reduction in hot flash frequency, across the whole group (not a share of people).	Oxybutynin for Hot Flashes Recommended (limited evidence) Recommended with limited evidence by the Menopause Society.
Cost	Gabapentin for Hot Flashes $9+ monthly Insurance: Varies	Oxybutynin for Hot Flashes $11–$14 monthly Insurance: Varies
Duration	Gabapentin for Hot Flashes Daily pill (ongoing)	Oxybutynin for Hot Flashes Daily pill (ongoing)
Reversibility	Gabapentin for Hot Flashes Reversible	Oxybutynin for Hot Flashes Reversible
STI protection	Gabapentin for Hot Flashes No	Oxybutynin for Hot Flashes No
How it works	Gabapentin for Hot Flashes Gabapentin binds to the alpha-2-delta subunit of voltage-activated calcium channels; how this reduces hot flashes is not known. Pregabalin is structurally related to gabapentin, but NAMS 2023 does not recommend it for hot flashes.	Oxybutynin for Hot Flashes Oxybutynin is an anticholinergic that blocks muscarinic acetylcholine receptors, including receptors in the brain, and can decrease sweating.
Prescription	Gabapentin for Hot Flashes Required Telehealth Prescription	Oxybutynin for Hot Flashes Required Telehealth Prescription
Side effects	Gabapentin for Hot Flashes Drowsiness Dizziness Fatigue Headache Weight gain Peripheral edema	Oxybutynin for Hot Flashes Dry mouth (over 50% of users) Constipation Dizziness Drowsiness
Who shouldn't use this	Gabapentin for Hot Flashes Hypersensitivity to gabapentin or any ingredient	Oxybutynin for Hot Flashes Uncontrolled narrow-angle glaucoma Urinary retention Gastric retention Hypersensitivity to oxybutynin or any ingredient Severe gastrointestinal disease that slows gut motility

Key differences

Menopause Society rating: Gabapentin for Hot Flashes, recommended; Oxybutynin for Hot Flashes, recommended (limited evidence). Gabapentin for Hot Flashes: costs $9+ monthly. Oxybutynin for Hot Flashes: costs $11–$14 monthly.