Off-Label Prescription
Prescription Medicine

Oxybutynin for Hot Flashes

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

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Oxybutynin for Hot Flashes (Prescription Medicine)
Method at a Glance
EfficacyRecommended (limited evidence)
see details
DurationDaily pill (ongoing)
Cost$4–$30
/monthly
Used forHot flash & night sweat relief
PrescriptionRequired
Available Products

1 product in this category

Specific branded items that use this method. Compare manufacturer details, active ingredients, and regulatory status.

Off-Label
OX
Oral Tablet

Oxybutynin

A generic antimuscarinic prescribed off-label for menopause hot flashes.

Oxybutynin for Hot Flashes
The details

What the evidence says

How well it works, what to watch for, who should avoid it, and the studies behind it.

How well it works
Recommended (limited evidence)

Recommended with limited evidence by the Menopause Society.

How was this measured?▾

Simon 2016 RCT (n=148): 73% of oxybutynin patients reported "much better" hot flash severity (responder rate) vs 26% placebo. The trial did not report a single percentage reduction in symptom score. NAMS 2023 Levels I-II recommendation.

Source studySimon 2016 RCT of oxybutynin for hot flash severity (PMID 27760081)
Why we rate it this wayNAMS 2023 Nonhormone Therapy Position Statement
Cost & insurance
$4–$30/monthly

Generic oxybutynin is inexpensive; insurance usually covers

Insurance CoverageUsually
Duration & reversibility
Lasts forDaily pill (ongoing)
Reversibility
Reversible
The science
Clinical classAnticholinergic
How it works in the body

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

Regulatory status
StatusOff-Label Prescription
Used forHot flash & night sweat relief
PrescriptionRequired
Side effects
  • Dry mouth (over 50% of users)
  • Constipation
  • Dizziness
  • Drowsiness
Who shouldn't use this
  • •Glaucoma (narrow-angle)(High pressure in the eyes)
  • •Urinary retention(Difficulty emptying the bladder)
  • •Gastric retention(Delayed stomach emptying)
  • •Hypersensitivity to oxybutynin or any ingredient(An allergy or sensitivity to the medicine, device, or one of its ingredients)
  • •Severe gastrointestinal disease (e.g., ulcerative colitis or toxic megacolon)(Severe digestive tract conditions that can be worsened by anticholinergic medicines)
Clinical Guidelines
NAMS

2023 Position Statement - Levels I-II recommendation for hot flashes and night sweats

View Guideline
The full picture

What to know about Oxybutynin for Hot Flashes

How it works

Oxybutynin is a prescription drug approved for overactive bladder, but it is also used off-label for menopause hot flashes. It blocks acetylcholine receptors in the central nervous system, which may reduce sweating and hot flashes by affecting temperature regulation.

How well it works

A 2016 randomized controlled trial by Simon et al. found that 73% of oxybutynin patients reported their hot flash severity was “much better” at 12 weeks, compared to 26% with placebo. The Menopause Society (NAMS 2023) lists it as a Levels I-II recommendation.

Side effects and cautions

Oxybutynin is not FDA-approved for hot flashes, so this use is off-label. Dry mouth affects over half of users. Other side effects include constipation, dizziness, and drowsiness. Because of cognitive concerns, it is not recommended for adults over 65, and long-term use may be associated with increased dementia risk in older adults (Chancellor 2024 review). You should not take oxybutynin if you have narrow-angle glaucoma, urinary retention, gastric retention, or a known allergy to the drug.

Where to get it

You need a prescription, which you can get through telehealth or your primary care provider. Generic oxybutynin is inexpensive and usually covered by insurance.