What Replens is
Replens Long-Lasting Vaginal Moisturizer is a hormone-free, water-based gel containing polycarbophil. It is meant to be used on a regular schedule for ongoing dryness, rather than at the time of sex. FDA cleared it as a medical device through the 510(k) process (FDA 510(k) K203818) under the classification "Lubricant, Personal" (FDA product classification NUC). The 510(k) record says Replens is compatible with natural rubber latex and polyisoprene condoms, but not with polyurethane condoms. It also lists an osmolality of 1200 to 2000 mOsm/kg and a pH of 2.5 to 3.5, so it is hyperosmolar: a WHO/UNFPA/FHI 360 advisory note says a personal lubricant should ideally not exceed 380 mOsm/kg. Although FDA clears it as a personal lubricant, Replens is marketed as a long-lasting moisturizer for scheduled use, and that is how it is best used.
Replens trial results
Guidelines support trying a non-hormonal product first. The North American Menopause Society says that non-hormonal therapies available without a prescription provide enough relief for most women with mild symptoms of genitourinary syndrome of menopause PMID: 32852449.
The trials, though, are mixed:
- In a 12-week randomized trial of 302 postmenopausal women with moderate to severe symptoms, a vaginal moisturizer did no better than a placebo gel. A low-dose vaginal estradiol tablet did no better either, because all groups improved by a similar amount PMID: 29554173.
- In two small 1990s trials against an estrogen cream, a dienoestrol cream improved a vaginal dryness index more than Replens in a 39-woman randomized trial, with other symptoms improving similarly PMID: 8794418, and Replens and a local estrogen cream both improved vaginal moisture over 12 weeks in a 30-woman open-label study PMID: 8293835.
- In a 23-woman open-label randomized trial in breast cancer survivors taking aromatase inhibitors, vaginal estrogen (FDA-approved inserts or a ring; Vagifem (estradiol) — DailyMed Drug Label) improved dryness and painful sex more than Replens over 24 weeks, a difference that was only just statistically significant PMID: 42530772.
- In a 53-woman trial in the menopausal transition, a polycarbophil gel was non-inferior to a hyaluronic acid gel, and both improved vaginal health scores. That trial was small and open-label, and two of its authors listed a pharmaceutical company affiliation PMID: 35131532.
One caution comes from the laboratory. In 2012 testing of over-the-counter products, Replens was among those toxic to Lactobacillus, a type of bacteria normally found in the vagina PMID: 23144863. That was a lab finding, not a trial in people. The formula has also changed since: the 2021 510(k) record lists a different preservative system from the earlier version, which used methylparaben (FDA 510(k) K203818). Whether the current formula behaves differently has not been tested.
Because results are inconsistent, Replens gets an evidence grade of C here.
Who Replens suits
Consider Replens if you have mild, ongoing dryness and want a cheap, hormone-free product to try first.
Consider Revaree Plus if you want a hyaluronic acid product, which has placebo-controlled trial support as a class, and the higher price is not a concern. Note that it was not tested for condom compatibility, and FDA's record lists it as not compatible with natural rubber latex, polyurethane and polyisoprene condoms. For discomfort during sex itself, a lubricant such as Good Clean Love Almost Naked works in the moment; our guide to the best personal lubricants compares the options.
See a clinician if symptoms are moderate to severe, if a moisturizer has not helped after several weeks, or if you have any bleeding after menopause. Our guide to vaginal dryness during menopause explains the prescription options.