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Method
Vaginal pH Modulator

Vaginal pH Modulator

A prescription gel used before sex that keeps vaginal pH acidic to disable sperm.

Second Method

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Efficacy86.3% typical use

Least effective: under 90 out of 100 people successfully prevent pregnancy per year.

Cost$0–$400 /per package

Insurance: Usually

DurationSingle use (effective for 1 hour)
ReversibilityReversible
STI ProtectionNo
How it works

A gel containing lactic acid, citric acid, and potassium bitartrate maintains an acidic vaginal pH that disables sperm and reduces their motility. It also acts as a physical barrier to sperm movement.

PrescriptionRequired Prescription required
Side effects
  • Vaginal burning or irritation
  • Increased risk of urinary tract infection
  • Rare allergic reaction
Who shouldn't use this
  • Recurrent UTIs or urinary tract abnormalities (FDA label says avoid use)