4 Checks on Gabapentin for Vulvodynia

Before a prescription review for vulvar pain, write down the treatment goal. Pain with first touch, soreness while sitting and difficulty enjoying sex may need separate questions.

Check the population and product

The 2018 double-blind crossover trial¹ randomized 89 women with localized, touch-provoked vulvar pain; 66 completed it. It tested extended-release oral gabapentin, Gralise, against placebo, with six weeks before each taper.¹

The current U.S. label approves GRALISE for pain after shingles, making this vulvodynia use off-label. It also states that GRALISE is not substitutable with other gabapentin products. A result for this oral formulation cannot establish whether a compounded vulvar cream works.²

Check the primary pain result

Gabapentin’s adjusted advantage on tampon-insertion pain was 0.3 points on a 0–10 scale, not statistically significant (P=.07). Intercourse pain and daily pain also showed no significant advantage.¹

That result is a reason to ask what benefit your clinician expects and when you will review it. It does not require you to reproduce a painful tampon test at home. Describe the activities you want treatment to make more comfortable.

Check the sexual-function finding separately

A secondary analysis of the same trial found a 1.3-point advantage on the Female Sexual Function Index, whose maximum score is 36. Its full-scale comparison included 63 participants. The authors said the clinical significance was difficult to assess.³

A pain test and sexual-function questionnaire measure different things. Ask which outcome will judge your response.

Check the plan before changing treatment

The U.S. label warns about serious breathing suppression, particularly with opioids or other sedating medicines or underlying breathing impairment. Reduced kidney function can require dose changes. Bring your complete medicine list to the review.²

Do not stop GRALISE abruptly because of this trial. Its label calls for gradual reduction over at least one week, sometimes longer at the prescriber’s discretion, and warns about withdrawal effects. Ask for instructions tailored to your current prescription.²

Assessment and other options still matter. UK NHS⁴ guidance describes examination with a cotton swab and possible infection testing, followed by specialist care that may involve physiotherapy, pain medicine or psychosexual therapy.⁴

Down There, Decoded includes “When Sex Hurts,” with prompts for pain location, triggers, duration and asking about pelvic floor therapy. Bring that account alongside the medicine’s name and the changes you have noticed.