Pollen Extract
vs
Stellate Ganglion Block

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
Pollen Extract

Pollen Extract

A dietary supplement made from Swedish flower pollen that may reduce hot flashes, available over the counter.
Stellate Ganglion Block

Stellate Ganglion Block

An injection of local anesthetic into a nerve bundle in the neck that may interrupt hot flash signals for several months.
EfficacyNot recommended see details

Not recommended by the Menopause Society.

Recommended (limited evidence) see details

Recommended with limited evidence by the Menopause Society.

Cost$30–$50 /monthly

Insurance: Varies

$500–$1,500

Insurance: No

DurationDaily supplement (ongoing)Up to 6 months per injection (based on the Walega 2014 trial endpoint)
ReversibilityReversibleReversible
STI ProtectionNoNo
How it works

The exact mechanism is not fully understood. Studies suggest it may affect neurochemical pathways involved in temperature regulation, but it is not FDA-approved as a drug.

A clinician injects local anesthetic into the stellate ganglion, a nerve bundle in the neck that is part of the sympathetic nervous system. This may interrupt the temperature-regulation signals that trigger hot flashes.

PrescriptionOTC No prescription / OTCRequired Prescription required
Available Products1 productNo branded products yet
Side effects
  • Mild gastrointestinal upset (rare)
  • Allergic reaction in people with pollen allergy
  • Temporary hoarseness
  • Drooping eyelid (Horner's syndrome, temporary)
  • Nasal congestion
  • Arm weakness (temporary)
  • Rare serious complications (seizure, cardiac arrest if injected into blood vessel)
Who shouldn't use this
  • Pollen allergy
  • Active anticoagulation therapy
  • Local infection at injection site
  • Severe bleeding disorder
  • Allergy to local anesthetic