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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.

Side-by-side comparison

Method
Gabapentin for Hot Flashes

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

Oxybutynin for Hot Flashes

An off-label anticholinergic prescription (oxybutynin) that reduces sweating and hot flashes by acting on temperature pathways.

Efficacy45% reduction in hot flash frequency

Around 45% reduction in hot flash frequency.

Recommended (limited evidence) see details

Recommended with limited evidence by the Menopause Society.

Cost$4–$30 /monthly

Insurance: Usually

$4–$30 /monthly

Insurance: Usually

DurationDaily pill (ongoing)Daily pill (ongoing)
ReversibilityReversibleReversible
STI ProtectionNoNo
How it works

Gabapentin binds to the alpha-2-delta subunit of voltage-gated calcium channels in the central nervous system, which may calm overactive temperature regulation and reduce hot flash frequency. Pregabalin binds the same target but NAMS 2023 does not recommend it for hot flashes.

Oxybutynin blocks acetylcholine receptors in the central nervous system, which may reduce sweating and hot flashes by acting on temperature regulation pathways.

PrescriptionRequired Prescription requiredRequired Prescription required
Available Products1 product1 product
Side effects
  • Drowsiness
  • Dizziness
  • Fatigue
  • Headache
  • Weight gain
  • Peripheral edema
  • Dry mouth (over 50% of users)
  • Constipation
  • Dizziness
  • Drowsiness
Who shouldn't use this
  • Hypersensitivity to gabapentin or any ingredient
  • Severe renal impairment (requires dose adjustment)
  • Glaucoma (narrow-angle)
  • Urinary retention
  • Gastric retention
  • Hypersensitivity to oxybutynin or any ingredient
  • Severe gastrointestinal disease (e.g., ulcerative colitis or toxic megacolon)